Celoron M(dothan)-

[Backbone]

I read all threads about Pentium M but I can't find nothing about Celeron-M
with Dothan core 1mb.Please post some results.
Thx :)

[ibby]

some results are int he dothan thread.

[Backbone]

I find only one post by Macci.

[Kamerat]

The problem with the Celeron M is the FSB-limit, 165-180MHz. This is the case for all B1 revision and earlier Dothans. :fact:

It's still cheap power. (http://service.futuremark.com/compare?2k1=8571680) ;)

[Backbone]

The problem with the Celeron M is the FSB-limit, 165-180MHz. This is the case for all B1 revision and earlier Dothans. :fact:

It's still cheap power. (http://service.futuremark.com/compare?2k1=8571680) ;)
Please post some Super Pi results

[Kamerat]

Please post some Super Pi results
I'm sorry, got my Pentium M 730 in the adapter well isulated. Don't wanna break the isulation to test my Celeron M 350 in Super PI. :)

[lktuio]

http://i6.photobucket.com/albums/y242/fairandsquare/CeleronM.jpg

Stock voltage and cooling. Using Celeron 350J. Still trying to find a way to get 100% overclock (2.6 G)

[malfunction!]

http://i6.photobucket.com/albums/y242/fairandsquare/CeleronM.jpg

Stock voltage and cooling. Using Celeron 350J. Still trying to find a way to get 100% overclock (2.6 G)

I also have a 350J that does the same on stock volts (in my Aopen 855GM board with a passive heatsink). Am waiting for my CT479 to arrive so I can swap it out into another board, up the volts and see what I get.

[Backbone]

What do you think about
Celeron M 370 1.50 GHz 1 MB 400 MHz 90 nm 21 W
which is based on Sonoma core.Can that baby clock like 533 Fsb's Pentium M

[DrJay]

What do you think about
Celeron M 370 1.50 GHz 1 MB 400 MHz 90 nm 21 W
which is based on Sonoma core.Can that baby clock like 533 Fsb's Pentium M
Maybe. Might still have problems with FSB over 180 though. I also had that problem with a C-M,....max 173fsb.

[caater]

Stock voltage and cooling. Using Celeron 350J. Still trying to find a way to get 100% overclock (2.6 G)

Are you running it on ct-479?
if so, have you tried to increase voltage a bit and to boot at 200/201 fsb?
i'm thinking of getting this cpu+adapter myself, as multiplier (13x) is ideal for
air/wcooling and the price anit too high.
but i'm afraid it hits the wall at under 2.6ghz :(

plus i haven't been able to find this cpu in finland or in estonia, only J-model available is 370 :mad:

[Backbone]

Maybe. Might still have problems with FSB over 180 though. I also had that problem with a C-M,....max 173fsb.
Can you adjust multipilier ?
lktuio:This Super pi result is too low.My winchester beat that at 2400 mhz

[yodadu92]

Celeron M are b1 core, so boot at fsb 200 are very hard.

And I have try EIST and CrystalCPUID to change multi but no result with a celeron 350 + p4p800e

[caater]

Celeron M are b1 core, so boot at fsb 200 are very hard.

And I have try EIST and CrystalCPUID to change multi but no result with a celeron 350 + p4p800e

celeron M 350J ,360J and 370 are all c0 :)
but no speedstep, that's true..

btw, superpi is indeed low.
macci had this result:


First test w/ the adapter and P4C800-E => Celeron 1.3GHz @ 2.12GHz (1.24V) => SPi1M 37sec (almost 36 ). ram @ around 203MHz 2-2-2-5.

[yodadu92]

celeron M 350J ,360J and 370 are all c0 :)
but no speedstep, that's true..

btw, superpi is indeed low.
macci had this result:


Ahh that is the diferrance between 350 and 350J. Thanks

[busta`]

I don't mean to thread jack, but how is the Banias core in terms of performance?

[totensiebush]

I don't mean to thread jack, but how is the Banias core in terms of performance?
apparently Dothan Celeron-M is somewhat higher performance due to a couple enhancements. It also uses less power at standard vcore

[DrJay]

Can you adjust multipilier ?
lktuio:This Super pi result is too low.My winchester beat that at 2400 mhz
Not with EIST...

[yodadu92]

Some result with one or two tweak: 34sec at super pi 1M and 283pt for cpu mark

http://www.xtremesystems.org/forums/attachment.php?attachmentid=32071&stc=1

[caater]

Some result with one or two tweak: 34sec at super pi 1M and 283pt for cpu mark


that's very nice score for a celeron, m8 :)
any word on cooling and any chance to boot @ 200 fsb?

wonder what 2M dothan would do at exact the same speed and mult..
anyone with a dothan, care to do a little superpi run @ 13x184 ?

[yodadu92]

I can't go highter, systeme freeze if i give him one more mhz. I will try to do pin mod and mod my vddr, but i thinks i'm hurt on fsb wall due to b1 core :(.

[Backbone]

Have C0 cores have problem with FSB ?lktuio have it but he can't reach above 180.

[caater]

Have C0 cores have problem with FSB ?lktuio have it but he can't reach above 180.

C0 celerons _should_ be good.. but i haven't seen anyone around with one yet...

[Backbone]

http://content.it4profit.com/itshop/itemcard_cs.jsp?ITEM=50409104100779934&THEME=asbis&LANG=bg
That is in my local shop.
But the socket is 478 wtf ? :confused: :confused: :confused:

[caater]

http://content.it4profit.com/itshop/itemcard_cs.jsp?ITEM=50409104100779934&THEME=asbis&LANG=bg
That is in my local shop.
But the socket is 478 wtf ? :confused: :confused: :confused:

nah, just some confusion :)
cpu has 478 pins, but socket is still 479 :)

but if you're going to use ct-479 and air/water-cooling, then only 350J is good choice.. the others just won't boot at 200fsb :(

[ibby]

are celerons multiplyers unlocked in bios ?
with a p4p800se ?

[Mr Meltdown]

What BIOS and mobos are you using? I ask because I "lose" my 1MB cache on my 1.3Ghz on P4C800E and P4P800 (flashed to -E) and P4P800SE mobos, it shows in BIOS on the P4Ps, but nothing shows for L2 on CPU-Z etc. and it is much slower than your scores as a result.

This was me thrashing my slower 1.3. :) But both B1 stepping :(

http://www.meltdown.fsnet.co.uk/pics/Intel/1323.jpg

Cheers,

MM

[yodadu92]

i have a p4p800-E, bios is 1007.003. For the 1M score, i have a new instal of windows, and close all process, 2225 timing, there a few optimisation.

For cpu z, i have the same probleme with 1.28 version, passt to 1.29 and it's ok :)

I have a question, have you seen a defferance between stock vcore and 1.6? and what type of cooling do you use?

[Mr Meltdown]

Thanks for that. CPUz comes out too often for me to keep up LOL. But it shaved 2 seconds off the Pi time WITH the cache showing.

Just for comparison then:

Asus P4P800 (flashed to P4P800-E 1007.003)

http://www.meltdown.fsnet.co.uk/pics/Intel/1323-1m.jpg

Now with 1:1 ratio and tight timings 2225.

http://www.meltdown.fsnet.co.uk/pics/Intel/1323-2225.jpg

Volts don't make much difference on these CPUs it seems. Using standard Asus CT-479 heatsink.

Cheers,

MM

[Mike@Portugal]

Hi,

I have ordered a Celeron M 370J (1.5Ghz, 400FSB, 1Mb Cache L2, c0 stepping) and a P4P800SE + CT-479.

How much can i expect from this configuration with stock cooling?

[caater]

Hi,

I have ordered a Celeron M 370J (1.5Ghz, 400FSB, 1Mb Cache L2) and a P4P800SE + CT-479.

How much can i expect from this configuration with stock cooling?

2.5ghz would be safe bet, however not more than 2.75ghz because of the fsb limit :rolleyes:

but once you get it, pls benchmark the hell out of it :)

[Jericho]

2.5ghz would be safe bet, however not more than 2.75ghz because of the fsb limit :rolleyes:

but once you get it, pls benchmark the hell out of it :)

Has it been proven that the new C0 steppings still have the FSB bug ?

[caater]

Has it been proven that the new C0 steppings still have the FSB bug ?

well, the problem is not cpu but asus motherboards..
they are unable lock pci/agp unless you boot at 200-201MHz fsb..

[Jericho]

Hmm interesting,

but should'nt that be fixed then IF a lower multiplier can be used , as already pointed out.

But to BIOS< set multiplier to 9x save exit.
Back into BIOS set FSB to 201 save exit.

etc

[malfunction!]

Just some observations:

My 350J in my i855 board (the AOpen one) will clock to 13 x 180 (2340MHz) at stock volts. With my CT479 and P4P800-VM it will only get to 13 x 166 stable (even creeping up towards 175Mhz makes the PC lock up) at stock volts. 13 x 170 is just about bench stable but not prime stable. It could be my RAM (normal Samsung PC3200) as the P4P800 will only lock the AGP and PCI buses if set to a 133MHz FSB and 166MHz RAM (333 DDR) whereas the AOpen board will lock them at 1:1 (100/100 in this case). So even @ 166MHz the RAM is running @ 208MHz and @ 175Mhz it would be @ 219MHz - and the VDDR settings on the VM board only go up to 2.65V. I'm not convinced it's the RAM though as I have the timings @ 3-4-4-8 (and am disabling the PAT alike acceleration using the 865 tweaker) so it really ought to be able to manage an increase of 10% or so. I suspect the BIOS is selecting tighter timings for the chipset and / or lower volts for it when posted at a lower FSB. It's a shame this can't be rectified (either in the BIOS or via software in Windows).

When I have the time I will try wire / pin modding the board / cpu to up the vcore and select a 200MHz FSB but I'm not confident. IIRC the FSB mod will have to be done to the mobo socket / CT479 pins and the vcore to the CT479 socket / CPU pins.

[malfunction!]

Oh and for those that have asked the Celeron Ms are multiplier locked and VID locked (i.e. they lack EIST functionality) on the chip. Which is why my hopes for the 350J were so high (lower multiplier, C0 stepping)

[caater]

are you unable to change voltage with p4p800-vm?
you should try to boot up @ 201fsb and bump voltage a little bit.

[malfunction!]

are you unable to change voltage with p4p800-vm?
you should try to boot up @ 201fsb and bump voltage a little bit.

AFAIK the only way to change voltage to higher than default is via a pin / wire mod. There's a voltage setting in the BIOS that does nothing (not even decrease it) on the 350J and seems to half work (decreases only) for my (Banias) Pentium M... In windows with the Pentium M I can also use any of the various tools to change the VID or multiplier to lower values but none of this works for the Celeron M as it lacks the EIST function.

Have just noticed there's a new BIOS (1017) out for my board though so I will try that tonight and see what it can do. Will also try bumping the voltage but I am thinking that the only way to get anything good out of it will be to trick the board to post at a higher FSB.

[malfunction!]

I have had a busy night tonight - to cut a long story short I have tried:

Flashing my P4P800-VM with both a P4P800 bios and a P4P800-SE bios. Both worked well enough to post but both also crashed after choosing "save settings and exit". Luckily both still posted and booted with default values so I could flash the board back to the VM BIOS.

Wire modding for extra vcore. Have used both 1.425 and 1.61 but neither made any difference.

Wire modding for a higher FSB. Posts fine @ 166 ("reserved" in the BSEL table) no good @ 200 (even with higher voltage). Didn't realise wire modding to a VCC pin can cause damage but it has somewhere - even with the wire removed the chip is always posting @ 166 now (could be chip or CT479 but suspect I've blown something on the mobo)

When posting @ 166 and a higher vcore I still can't get any higher than the low 170s - so either the chip really doesn't like high FSBs (though it should be fine being a C0 part) or the mobo doesn't. This is even @ 166:166 (1:1 FSB / RAM ratio) so I don't think it's the RAM either. So it must be either the CPU or the mobo. Have reasons to suspect both.

[Jericho]

I have had a busy night tonight - to cut a long story short I have tried:

Flashing my P4P800-VM with both a P4P800 bios and a P4P800-SE bios. Both worked well enough to post but both also crashed after choosing "save settings and exit". Luckily both still posted and booted with default values so I could flash the board back to the VM BIOS.

Wire modding for extra vcore. Have used both 1.425 and 1.61 but neither made any difference.

Wire modding for a higher FSB. Posts fine @ 166 ("reserved" in the BSEL table) no good @ 200 (even with higher voltage). Didn't realise wire modding to a VCC pin can cause damage but it has somewhere - even with the wire removed the chip is always posting @ 166 now (could be chip or CT479 but suspect I've blown something on the mobo)

When posting @ 166 and a higher vcore I still can't get any higher than the low 170s - so either the chip really doesn't like high FSBs (though it should be fine being a C0 part) or the mobo doesn't. This is even @ 166:166 (1:1 FSB / RAM ratio) so I don't think it's the RAM either. So it must be either the CPU or the mobo. Have reasons to suspect both.

Thanks for the update.
Keep us posted on any progress with the celeron-m C0.
I too was under the impression that the old FSB limitation was due to the B1 stepping, and therfore the C0 should have fixed this. :confused:

[Mike@Portugal]

Dont' know if someone saw my post about Celeron M 1.5Ghz (c0 stepping) + CT479 + P4P800SE so i ill post it here again.

The system is not stable beyond 160FSB no matter what vcore (1.6v max) or memory settings :mad:
Any sugestions?

With the cpu at (160x15) and memory at 200Mhz (4:5) with 2.5-3-3-5 (best i can do) i have achived this

Bought an Asus A9550GE to help the party, clocked it at 450/250

SuperPI: 36,313s
3DMark 2001SE: 12893 3d marks http://service.futuremark.com/compare?2k1=8633417
3DMark 03: 3736 3d marks (forgot to publish it)
3DMark 05: 1763 marks http://service.futuremark.com/compare?3dm05=985162

http://img51.imageshack.us/img51/3808/superpifsb1601au.th.jpg (http://img51.imageshack.us/my.php?image=superpifsb1601au.jpg) http://img42.imageshack.us/img42/4773/3dmark2001se8cq.th.jpg (http://img42.imageshack.us/my.php?image=3dmark2001se8cq.jpg) http://img215.imageshack.us/img215/1605/3dmark034609jj.th.jpg (http://img215.imageshack.us/my.php?image=3dmark034609jj.jpg)

[malfunction!]

Dont' know if someone saw my post about Celeron M 1.5Ghz (c0 stepping) + CT479 + P4P800SE so i ill post it here again.

The system is not stable beyond 160FSB no matter what vcore (1.6v max) or memory settings :mad:
Any sugestions?

With the cpu at (160x15) and memory at 200Mhz (4:5) with 2.5-3-3-5 (best i can do) i have achived this

Bought an Asus A9550GE to help the party, clocked it at 450/250

SuperPI: 36,313s
3DMark 2001SE: 12893 3d marks http://service.futuremark.com/compare?2k1=8633417
3DMark 03: 3736 3d marks (forgot to publish it)
3DMark 05: 1763 marks http://service.futuremark.com/compare?3dm05=985162

http://img51.imageshack.us/img51/3808/superpifsb1601au.th.jpg (http://img51.imageshack.us/my.php?image=superpifsb1601au.jpg) http://img42.imageshack.us/img42/4773/3dmark2001se8cq.th.jpg (http://img42.imageshack.us/my.php?image=3dmark2001se8cq.jpg) http://img215.imageshack.us/img215/1605/3dmark034609jj.th.jpg (http://img215.imageshack.us/my.php?image=3dmark034609jj.jpg)

Nice to know I'm not the only one having problems (nice for me, not for you obviously)... Maybe yours is just a bad overclocker compared to some of the Pentium Ms? How far can you go on default volts? Still 2.4GHz?

[Spajky]

@ malfunction & Mike@Portugal ! : I was thinking a bit, why there could be the problem with C-M not going at higher Fsb. Here are my thoughts:

- MoBo: problem with PCI/Agp divider/lock (bios) on Asus boards (or chipset can not handle it @ mobile chipset-no CT adapter boards), so problem with SATA-instability; possible solution : for test using IDE HD & PCI graphic card with disabling Sata in bios, which is too sensitive to higher PCI clock & running ram in_synch.

- default Vcore of CM3x0 is lower (from datasheet!) than on P-Ms & MoBo doesn´t apply higher set Vcore right @ boot but later after Cpu recognition, so no boot at too high Fsb or instabilities in Win later.

- C-M has disabled IntelSpeedStep changing frequencies/Fsb/multi/Vcore (other older type powersaving methods work normally-HLT/softColing); possible solution: Vid pins wire trick on CT adapter to rise default Vcore (tricking the adapter & MoBo), IMHO Vcore wire trick on MoBo or under the adapter will not work, should be done on cpu or on adapter socket upper if done ...

- C-M IMHO has (not like P-M dothans) locked multiplier, so no changes in Bios are effective regarding this so as proofed OC is done only by rising Fsb as usual. Could be that Vcore for C-M is locked too using that CT adapter & no bios Vcore change is effective on chip really, because the adapter has its own Vcore regulator. Possible solution: if the Vid pin wire trick does not work, maybe modding the adapters Vcore regulator would be the only alternative to get immediatelly default Vcore higher & possibility to boot & be stable @ 200Fsb/2,6GHz for CM350J (or bypassing adapter on-board Vcore regulator somehow for Vcc voltage getting it from MoBo instead or so) ...
--
Regards, http://www.spajky.vze.com :)

[Mike@Portugal]

so no more solutions for celeron m?

Mine boots at 160FSB perfectly and it's stable... i can even put it in 170FSB inside windows throught clockgen but it doesn't boot at 170FSB

Here is SuperPI at 170FSB 2-3-3-5 (stable for superPI 1M at least)

http://img239.imageshack.us/img239/269/superpifsb1705oo.jpg

[malfunction!]

Bit of a random thought dump to keep the thread going:

I'm working away from home at the moment but when I get the chance I will have a play around with my other chips in both my CT-479 + P4P800-VM and my AOpen i855 board - hopefully I will be able to find out what the limiting factor is. I have a Banias Pentium, Dothan Celeron and 3 Banias Celerons to play with. In the i855 board even the Banias Pentium M can clock at 180MHz FSB (10 x 180, RAM @ 1:1) so I'm not convinced my Dothan Celeron (especially as it's a C0 core) is the cause of the FSB problem - in the CT-479 the Banias Pentium can only clock to 166MHz. I don't have any "uber" RAM but I do have both Samsung PC3200 and Crucial / Micron PC3200.... The i855 machine is using the Crucial whereas the CT479 machine is using the Samsung so *maybe* that's why the i855 can clock higher (though the P4P can at least use looser timings than 2.5-3-3-6 which is as high as the latencies can go on the i855 IIRC). I finally found some wire (copper thread type from a power cord) that I can easily wire wrap pins with so I can try a few options... (I was using alu thread from data cables before and it just wasn't working for me)

[Spajky]

My posts @ Dothan overclocking thread, first one with some not quite accurate statements, but others IMHO Ok! Resolving certain problems! Mods!

http://www.xtremesystems.org/forums/showthread.php?p=934007#post934007
http://www.xtremesystems.org/forums/showthread.php?p=944273#post944273
http://www.xtremesystems.org/forums/showthread.php?p=945197#post945197
http://www.xtremesystems.org/forums/showthread.php?p=945595#post945595
http://www.xtremesystems.org/forums/showthread.php?p=947319#post947319

Quite a lot of stuff to read carefully, I know ... :)

& here is another idea also! (about non-Asus boards)

http://www.xtremesystems.org/forums/showthread.php?p=946920#post946920
--
Regards, Spajky, :) passed months ago -
3rd_Ann.: "Tualatin OC-ed/BX-Slot1/inaudible setup!"

[Mike@Portugal]

Has anyone tried the new bios ( http://www.xtremesystems.org/forums/showthread.php?t=67737&highlight=ct-479 ) with Celeron M + P4P800SE ?

[ibby]

i think it got mentioned that the bios suport only adds newer cpus

[Spajky]

PS.: has anybody studied my modding proposals on those links I gave in my previous post or even tried some? (or everybody else is already on Holidays away ...)

[lktuio]

Tried the u wire mod, also tried to up the voltage at bios. Still can not pass 185 fsb. Using zalman 7000B-Cu so definetely not temperature problem (less than 40 C).

Any other workaround ?


PS.: has anybody studied my modding proposals on those links I gave in my previous post or even tried some? (or everybody else is already on Holidays away ...)

[ibby]

my celeron B1 will not pass 120FSB with 1.6v
if i drop the multi and try it on 140 FSB it still fails. :(

[Mike@Portugal]

Tried the u wire mod, also tried to up the voltage at bios. Still can not pass 185 fsb. Using zalman 7000B-Cu so definetely not temperature problem (less than 40 C).

Any other workaround ?

What voltage did you use with the wire mod?


my celeron B1 will not pass 120FSB with 1.6v
if i drop the multi and try it on 140 FSB it still fails.

Celeron M is multi locked (doesn't have speedstep) so no point in changing multi because it will always use the same factory multi.

[ibby]

well mike..
take a look at this ;)

[caater]

well mike..
take a look at this ;)

that seems to be like a banias pm, not celeron m
:rolleyes:

[Jericho]

well mike..
take a look at this ;)

LOL

Pentium-m

[Spajky]

Tried the u wire mod, also tried to up the voltage at bios. Still can not pass 185 fsb. Using zalman 7000B-Cu so definetely not temperature problem (less than 40 C).

Any other workaround ?
I have no more ideas than those explained on those links I gave... :woot:

[ibby]

opps ...
sorry .. i dont know why ive been thinking that it is a celeron .. :(

[wwwww]

The Bannies aren't that great overclockers. I couldn't get my 1.5 banny past 2.0 and my 1.6 banny past 1.92Ghz (stock volts)

[Spajky]

http://www.xtremesystems.org/forums/showthread.php?p=953533#post953533

Generaly, C-M & P_M have at same Vcore & clock frequency same thermal dissipation ... :) ...

[Spajky]

Any other workaround ?
Since "existing Boot&FSB Problem" is present with Celeron_M, I got another idea to trick the MoBo (w/o bios code hex hacking!) & here it is; didn´t think it about it before!

The problem is present, because at first moments/seconds of boot, the default boot Vcore of this CPU is only around 1,2V /Vcc,BOOT one!/ [see links I previously gave] & is multplier locked & even "Vid wire pin trick" or Vcore rising (in Bios Cmos settings) does nothing at those moments [kicks-in later what is set/rised in Bios] & default FSB is only 100Fsb/400qp.
So what to do? Tricking MoBo to think right @ boot that has inserted in socket a 133Fsb Cpu instead a a 100Fsb one !!! MAYBE this COULD WORK if the Cpu is not a bad example/OC-er & CM350 will boot right @ 1,73GHz! Try !!!

There are two ways:

- one doing it on the P4 socket [wire trick as for Vid definition way] (or under the MoBo soldering same) by forcing MoBo to think that has inserted 133Fsb Cpu by using BSEL (bus_select, BCLK) pins combination (H means insulating pin, L means connecting it to nearest Vss (GND) pin! Table for P4:

pin AD5 pin AD6 Vss (Gnd) closest pins: AD4; AC5,7; AE7
Bsel(1) Bsel(0) Fsb_MHz
L L 100
L H 133
H L 200 (this you do not need!)


- the other maybe easiest way is doing the "same kind of mod" on CM/PM socket on Asus_CT-479 adapter by only grounding/shorting a Bsel(0) - C16 pin (forcing it on L!) to some nearest Vss pin: B16; C15; D15,17

So CM will boot with 1,2Vcore & 133Fsb & than Bios Cmos settings kick_in (rised Vcore & Fsb over defaults, so taking care about PCI/AGP clocks & problems with peripherrals, with good cooling should go to 200Fsb & maybe more. With preventing peripherrals problems if the Cpu can not go so high, there could be some other problem to resolve:

- modding the adapter: rising VccA [measuring it first, PLL supply voltage, max.120mA - see those my previouly linked posts for PM-dothan discussion] to 1,8V instead of 1,5V, since C_M supports both voltages. This (overvolting) would help internal Cpu generated_clocks to work better/at higher clocks, same as does overvolting pure core!

This last may be needed, because I found 2 datasheets for P_M, older ones states VccA 1,8V, newer one 1,5V & Asus IMHO took for all CPUs lower one not thinking much about extreme OC-ing!

Damn, if I would be so good in money earnings like I am with modding ideas, I´d be a millionaire .. :D ...

[Mike@Portugal]

I'm only confortable in doing the u wire mod in the adapter, i don't wanna lose the warranty of my components.

What do you guys think of 1.7vcore? is it too much for Celeron M? or too much for Asus P4P800 SE?

I will try it but i'm afraid of burning my precious components.

[Spajky]

I'm only confortable in doing the u wire mod in the adapter, i don't wanna lose the warranty of my components.

What do you guys think of 1.7vcore? is it too much for Celeron M?

IMHO going over Intels max. recommended is not a good Idea if not having subzero (or at least good water) cooling, because you do not gain much, just build heat; this first started with Tualatins mainly IMHO & 1,6Vcore is already 27% over C_M defaults for core!!! Thats why I recommended VccA & VccP voltage mods on adapter, rather than too much overvolting pure core!
Cpu internal PLL generator for other clocks has not enough juice to oscillate properly if OC-ed too much ... to much overvolting can kill components easier than heat (remember the Northwood sudden death syndrome?) :)

[ibby]

IMHO going over Intels max. recommended is not a good Idea if not having subzero (or at least good water) cooling, because you do not gain much, just build heat; this first started with Tualatins mainly IMHO & 1,6Vcore is already 27% over C_M defaults for core!!! Thats why I recommended VccA & VccP voltage mods on adapter, rather than too much overvolting pure core!
Cpu internal PLL generator for other clocks has not enough juice to oscillate properly if OC-ed too much ... to much overvolting can kill components easier than heat (remember the Northwood sudden death syndrome?) :)

NSDS .. has long vanished :slapass: :woot:

[wwwww]

Well if it makes ya all feel better, I run 1.7V 24/7 :P. With load that is (folding).

Gets me an extra 60MHz over 1.6V :P (also means I got a 166FSB which is perfect for the bus speeds (that way I get 33/66)).

temps never go above 31C load. (swiffy block/pump/coolant with a 120mm black ice)

[Pongi]

IMHO going over Intels max. recommended is not a good Idea if not having subzero (or at least good water) cooling, because you do not gain much, just build heat; this first started with Tualatins mainly IMHO & 1,6Vcore is already 27% over C_M defaults for core!!! Thats why I recommended VccA & VccP voltage mods on adapter, rather than too much overvolting pure core!
Cpu internal PLL generator for other clocks has not enough juice to oscillate properly if OC-ed too much ... to much overvolting can kill components easier than heat (remember the Northwood sudden death syndrome?) :)

What exactly does the VccA and VccB mods do different from overvolting the Vcore? (bus signal overvolting?)

[Mike@Portugal]

I guess 1.7v won't do any diference! :nono:

My celeron M hit a brick wall at more than 160FSB, it's stable at 160FSB at 1.4250v and not stable at 165FSB at 1.6v :mad:

Maybe something else is holding me back, but i really think it's the Celeron M, well i will sell it and buy myself a P-M 730. :banana:

[Spajky]

What exactly does the VccA and VccB mods do different from overvolting the Vcore? (bus signal overvolting?)

Yes, kind a that.

VccP is a supply 2A power voltage for i/o (input/output) lines of core (peripherrical core circuits); rising it up a bit gives to them more "juice" when switching on and off states (logic zeroes & ones) & since a bit more current there flows, signal there is more clear (less subceptive to "noise"- digital "mistakes") so OC-ing by rising Fsb goes better. Thats why for example Tualatins on non-native boards w/o PowerLeap slot-1 adapter have been OC-ing better (higher Vtt=VccP than nominal voltage on those MoBo) since are multiplier locked, same as Celeron_M ! (same default clock there at defaults for both = 100MHz!)

That way you Over-volt & over-Current a bit same time those i/o Cpu lines supply & chipset*** gets on Cpu side a bit stronger signal (on memory side you have there Vdimm lines, on which you do the same with rising Dimm voltages, but in that case their i/o lines voltage+reference one rises automatically with Vdimm rising; on Cpu side that is not the case since you have separate adjustable Vcore & fixed VccP+reference voltage! On memory side many times in Bios you have a setting of "signal strength" (current setting for memory/chipset i/o lines!), but for Cpu side you do not have this there, so a mod is required on adapter/Mobo side to enhance stability there IF needed (at edge OC or if not achieving high enough FSB clocks). Since Celereons are worse (& cheaper) performers especially on Fsb side, IMHO will benefit from rising VccP more than PM 7x5/100Fsb/ or best PM7x0/133 ones.

The effect of rising VccP a bit (10% or so) is similar for CPU peripherrical circuits just like rising Vcore for central Cpu parts, but the limitation here is that it can never be higher than lowest Vcore to prevent data corruption. Rising a bit VccP there has some thermal impact on Cpu heat, but very small ...

Note: *** i/o (aGTL)signals from Cpu on CT479 adapter do not go directly to the chipset but thru "clamping voltage bi-directional chips" (3 there!), so rising Vccp affects them first before chipset ... There on adapter is also a voltage source for i/o signals reference between digital states (GTLREF, 0,63V) which can be also raised (mod!) to 0,7V together with rising VccP, so you enlarge also the margin "window" of proper recognizing 1 & 0 signals (more voltage "space" for i/o Cpu transistors to pull up & down signals).

In my case for my Tuallie (35% OC-ed can ride on lower Vcore than default!), on the contrary (having a BX old MoBo) I have lowered VccP on the MoBo (marked for them as Vtt instead, from on my MoBo 1,47 to 1,41V /default is 1,25V/ so to prevent data corruption since at heaviest Cpu load set Vcore drops from mine 1,47V to 1,44V sometimes ... I am planning to go toward C_M & MoBo changing before Christmas, since after last year close (less than 10m, almost direct) lightning hit (another long story), I have occasional problems with my MoBo ...

The story about VccA is the supply power for CPU internal clocks PLL generator. If higher, it helps keeping PLL circuitry running stable @ higher Cpu frequency & directly impacts on Cpu stability at high clocks (much more than VccP!). Since datasheet states for there bi-voltage source (around 1,5 or around 1,8V), I would opt for higher one, since IMHO Asus CT adapter uses single & lower one. For that to achieve, another mod on the adapter could be needed ...

Those kind of mods for someone having "guts", the will, knowledge & practice with delicate soldering (having proper equipment too) are not so complicated to make if you know what U are doing, having in mind also, that sometimes doing that, sh1t can happen finishing killing some stuff. :) Normally If I will do the mods myself on the adapter, will do it on it disconnected alone, later checking with a DVM all the success with it connected to power BEFORE I assemble all together (so if I kill the adapter, can buy another one & not the whole setup again!) :)

I am planning also to make some mild careful "lapping" the Cpu core (like all mine CPUs till now) & pre-burning it like this I did before: http://freeweb.siol.net/jerman55/HP/preBurn-in.htm together with CT adapter :D , maybe will try also some TEC AirCooling (not sub-zero, just a bit lower than ambient temps to prevent condensation & to much heat build_up inside my case (I will need to make some automated variable power source adapter for a TEC).

Yes, I do useful mods for fun too (browse a bit my site, well, needs some updating...) & the last one was just yesterday on my car (don´t ask!) :D :D :D ...

Please "snip" quoting while replying ...

[Pongi]

So to some it up Spajky, it sounds like you're talking about improving the FSB signaling strength (or improving the signal/noise ratio at higher speeds). And to do this would require tinkering with the VccP pins (which there seems to be a bunch of). Does the adapter regulate the power to the VccP pins? I really don't know much of how the adapter works in supplying power to the CPU. I need to get a Digital Multi-Meter.

[caater]

So to some it up Spajky, it sounds like you're talking about improving the FSB signaling strength (or improving the signal/noise ratio at higher speeds). And to do this would require tinkering with the VccP pins (which there seems to be a bunch of). Does the adapter regulate the power to the VccP pins? I really don't know much of how the adapter works in supplying power to the CPU. I need to get a Digital Multi-Meter.

adapter generates all those voltages spajky mentioned.. that's for it has the power adapter :)
Spaiky, i've read now all your posts and You seem to have a strong point there.
Actually, when pm @ desktop madness started with dfi board, i wondered if fsb limit/oc'ability has something to do with lower io voltages and power-saving bus.
now, i think, you have proven in theory, that it is so.
i might think about modding my adapter (measuring voltages first, of course :)) after i finish some projects :)

[Spajky]

...improving the FSB signaling strength .. require tinkering with the VccP pins ...Does the adapter regulate the power to the VccP pins?

Yes, that bigest (looks like Vcore Mosfets on MoBo) voltage linear regulator there does the job for all of VccP pins ...

[ibby]

adapter generates all those voltages spajky mentioned.. that's for it has the power adapter :)
Spaiky, i've read now all your posts and You seem to have a strong point there.
Actually, when pm @ desktop madness started with dfi board, i wondered if fsb limit/oc'ability has something to do with lower io voltages and power-saving bus.
now, i think, you have proven in theory, that it is so.
i might think about modding my adapter (measuring voltages first, of course :)) after i finish some projects :)

mod it now :slapass:

[Spajky]

when pm @ desktop madness started with dfi board, i wondered if fsb limit/oc'ability has something to do with lower io voltages and power-saving bus.

Maybe ...
With native Centrino chipsets (first DFI or Aopen board on i855) there could be also a chipset or Bios problem, not just lover voltages not to be able to go much higher than 166Fsb (PCI/agp locks etc), while with Asus that should not be the problem (some people did with CT adapter even 300Fsb! as I saw, by lowering multiplier on PMs).

I really do not see why Celeron_M (dothan) shouldn´t go higher on Asus_CT, especially if C-0 revision or 350J one. The core is practically the same as last PM ones (its not Banias-"poor OC-er"), so with some overvolting should IMHO do 2,6GHz (200Fsb/100% OC) "on _Air", heat/cooling is not a problem as looks. Maybe we Are just too demanding (70% OC on air is an excellent achievement; times ago 50% was very nice result!) for this low priced CPU. But I really do not believe, that the core of C_M350 is so much worse made (maybe 2nd class cheaper silicon wafers?) than P_M ones ...

Sooner or later we will find out what is/was the real bottleneck ... :)

@ ibby : don´t be unpatient ... :nono:

PS.: Can someone with digital camera make me a big close high resolution *.jpg shot of Asus_CT-479 upper side & upload it somewhere posting me here URL for DL-it; my existing one is not enough detailed slide even if I enlarge it ... TIA ...

[Pongi]

Hmm, then we'll just have to mod that linear regulator when I get my adapter back from RMA (No I didn't kill it, but if it dies again I'll be damned if it wasn't me who did it :D)

[malfunction!]

Maybe ...
With native Centrino chipsets (first DFI or Aopen board on i855) there could be also a chipset or Bios problem, not just lover voltages not to be able to go much higher than 166Fsb (PCI/agp locks etc), while with Asus that should not be the problem (some people did with CT adapter even 300Fsb! as I saw, by lowering multiplier on PMs).

I really do not see why Celeron_M (dothan) shouldn´t go higher on Asus_CT, especially if C-0 revision or 350J one. The core is practically the same as last PM ones (its not Banias-"poor OC-er"), so with some overvolting should IMHO do 2,6GHz (200Fsb/100% OC) "on _Air", heat/cooling is not a problem as looks. Maybe we Are just too demanding (70% OC on air is an excellent achievement; times ago 50% was very nice result!) for this low priced CPU. But I really do not believe, that the core of C_M350 is so much worse made (maybe 2nd class cheaper silicon wafers?) than P_M ones ...

Sooner or later we will find out what is/was the real bottleneck ... :)

@ ibby : don´t be unpatient ... :nono:

PS.: Can someone with digital camera make me a big close high resolution *.jpg shot of Asus_CT-479 upper side & upload it somewhere posting me here URL for DL-it; my existing one is not enough detailed slide even if I enlarge it ... TIA ...

Just to add another perspective on this - though I've said most of this before - my i855 board (the AOpen one - no mods)) quite happily runs my 350J @ 180MHz FSB but my P4P800-VM locks up around 170MHz... 166MHz is fully stable (and what I'm booting the VM + 350J at). And though the Banias chips are crap overclockers in terms of total MHz my Banias 1.3GHz PM runs happily @ 180MHz in the 855 board too so there's definitely something weird going on here. When I get a chance (I'm working away from home at the moment) I will buy a decent board to replace the VM... (thinking P4GD1 as I also want to upgrade my GFX soon and will make the switch from AGP)... Then I'll get the chance to torture my poor celery some more!

There defintely is something wrong with being disappointed with a 66% overclock though!

[lktuio]

I am contented with my 80% overclock although I can go as high as 85% (celeron M 350J 1.3@2.34).

BUT, I am still curious whether the wall is really due to CPU or other factor. If it is other factor, I will be more than happy to get 200 x 13 (2.6G) and make a direct comparison with FX-55.

It will be very ironic if a "celeron" beat an "FX-55". :p:



There defintely is something wrong with being disappointed with a 66% overclock though!

[ibby]

is there a way of pin modding the cpu ......
so we can make the mobo /bios belive that it is a 533 fsb celeron,
maybe that will unlock sumat else with more fsb .. ?

[Spajky]

@ ibby :

Yes, doing the "wire mod on socket" between two pin holes, option : forcing MoBo to think that has inserted 133Fsb Cpu by using BSEL (bus_select, BCLK) pin connecting it to nearest Vss (GND) pin!: on Asus_CT-479 adapter by grounding/shorting a Bsel(0) - C16 pin (forcing it on L(ow)!) to some nearest Vss pin: B16; C15; D15,17
something like this ...
http://www.picturebio.com/images/laptoppics/image7.jpg
http://www.picturebio.com/images/laptoppics/image6.jpg

... and Cpu will boot already 33% OC-ed ... :)

@ lktuio : I also do not believe that the problem is Cpu, but rather something else /we don´t know for sure what yet/! Try disabling all stuff (other peripherrals) on your MoBo Bios except FD & IDE controller, find some old IDE disk & old PCI video card & try OC more & try if having any success booting higher than before, this "mine" :D win already made micro setup: http://users.volja.net/image/Files/ResQsys.htm ... report us the result ... :)

[wwwww]

I've got that pinmod thing in yet I don't seem to notice any difference. Also it doesn't boot at the 133FSB straight off. I've tried setting the jumper to say its a 133FSB cpu with no luck. I've refitted the wire twice with no luck. Any ideas?

Surely something like this, though, could be done with a bios mod..

[ibby]

@Spajky,

There must be sumat holding us back.
there is no way all these cpus have a therotical max fsb at 180 (for example).

IT must be some thing else.

I know with the Zeons 1.6 LV one, if u did not do the pin mod then u would only get 2.4 gig ish max.

But once the pin mod had been done .... u could attain more 3.2 gig atleast.

I think the issue maybe adapter releated.

Has any one got a 479 dedicated mobo to test the cpu in ?

[Spajky]

There must be sumat holding us back.
there is no way all these cpus have a therotical max fsb at 180 (for example).

IT must be some thing else.

I think the issue maybe adapter releated.
There could be:
- peripherrals clock problems (no propper dividers PCI/otherStuff kicking_in in Bios)
- software block in bios (cpu microcode) forced by Intel to Bios manufacturers
- hardware block on internal PLL (crippled by Intel design just like for powersaving)
- all the above :-(

IMHO, CT-479 is not a problem (works perfectly with FSB over 200MHz with P-M), but could also be there some pin preventing C_M more than 80% higher basic CPU clock ... There are a bunch of pins mentioned in datasheet, that control a lot of stuff! I have to compare those to a P-M datasheet , maybe there is some difference somewhere & so a place for another mod proposal ...

[ibby]

all ur suggestions are correct.

are all Celeron M processors multi locked ?

if they are is there away to "lower the multi", via the
socket ?

Does any one know about BIOS and see if they can change / make the cpus a Unknown cpu ?

Hae a look at the data sheet and keep us informed, even tho iam not using a celeron,
iam willing to go buy 1 next month, for trial and error.

[wwwww]

all ur suggestions are correct.

are all Celeron M processors multi locked ?

if they are is there away to "lower the multi", via the
socket ?

Does any one know about BIOS and see if they can change / make the cpus a Unknown cpu ?

Hae a look at the data sheet and keep us informed, even tho iam not using a celeron,
iam willing to go buy 1 next month, for trial and error.


well the reason they open the multi is so that mobos can downclock them to save power (i.e. speedstep) - if celerons have speedstep then they are downwards unlocked...

[Spajky]

to save power (i.e. speedstep) - if celerons have speedstep then they are downwards unlocked...
no, they are locked!


Some other facts to add to my previous modding ideas:

-All pin listings for CM & PM are same (checked!) except! older /april-2004/ PM7x5 one 30218905.pdf datasheet has a difference: C14 is on all others Bsel(1) while there RSVD & C16 (Bsel-0) is there TEST3 [rsvd + test unconnected, the last has to have option of pull-down by 1k resistor] WHAT the F*CK ??? Same datasheet number dated January-2005 has no this exeption!!! Something weird here ...

- BSEL pins (C14,16) have L-ow state @ 0V & H-igh state @ 0,7V /=same almost as GTLREF/...
Bsel(1) has same status as for CM/PM also for P4 (so no problem here), while the other pin Bsel(0) has a reverse logic status on P4 than on Dothan; so there on CT479 has to be at least one transistor for that for reversing logic state to a P4 MoBo & means same time that BSEL pins are connected on Asus adapter; the other one is just directly going thru to P4 MoBo !!!

- ITP_CLK(1:0) 2 Fsb clock pins (A15,16)[output signals] are not connected IF the MoBo has "debug port interposer" implemented; if not so are connected to a MoBo/adapter - this should be checked with Ohm-Meter. IMHO that term means (not sure), that MoBo has hardware self-Post check implemented in Bios (majority of them now have this), so those 2 pins should be not connected anywhere IMO on the CT adapter ...

- BSEL pins can be or not be connected!!! If the Cpu selects FSB (& Cpu clock), than are connected & sent to MoBo clock generator chip; if they are not, than means that MoBo itself independently controls the Fsb /& clock to a CPU/ : this IS the case with MoBo based on older i852 & i855 chipsets (and NOT the case with i9xx chipset based ones) !!!

This last could explain, why even a malfunctions Banias Celly /if not really lucky example/ could do 180Fsb_! on his Aopen i855 board !!!, while on his P4 & CT adapter did not wanna go higher than 166Fsb, because those Bsel pins are sent/connected via adapter to a MoBo & something is preventing going higher ...

Also as I found till now (not sure but anyway), also PM7x5 (100Fsb/400qp) have same "Fsb problem" as Cellys do regardless they have down unlocked multipliers ... so there must be something involved with those BSEL pins or Bios detecting Fsb IMHO ...

Since Bsel pins look like are not needed to be connected (see note on i855 chipset MoBo), there IMHO could be left unconnected on P4 ! socket (isolating there AD5&6 pins, setting them on H-igh so; datasheet states this is a "reserved" option for P4). To achieve same is another option: isolating just on P4 socket pin AD5 & on CT-479 socket pin by grounding/shorting a Bsel(0) - C16 pin (forcing it on L!) to some nearest Vss pin: B16; C15; D15,17. The result would be IMHO the same! The P4 MoBo would go IMO into a test mode (other possibilities enabled, maybe even-not really believable, unlocking the Celeron_M multiplier ...)

But isolating pins properly & REVERSABLE way in the socket in a delicate job; needs some practice opening socket cover with pin holes to get access to pin contacts to bent them a little & widening pin hole on the cover; best is (like I did) practicing before on an old socket of some death old MoBo before few times with some dead CPU too. All mine Tuallie slotket mods were done reversable like this: [ http://freeweb.siol.net/jerman55/HP/Pics/Mods/TualModsoc.JPG ]

Momently, I have no further ideas ....

[ibby]

can any 1 try this mod ? PLEASE ......

[ibby]

Spajky @ could u post a diagram on which pins would need to be modded ?

ibby

[Spajky]

@ ibby :
...you have all info for DL on Intel's Literature Center in datasheets for Dothan & P4 : http://appzone.intel.com/literature/index.asp for pin assignments ...

@ wwwww :
have you tried to lower the multiplier & raise more Fsb on your P_M?

[Newbie_User]

i own a Cooler Master aquagate system
Recently bought a Celeron M 370 (c0) +asus CT-479
Running them on an Asus P4GD1 (Bios 1005...)

Should receive them tomorrow.....(and tell charlie...:)

Can i expect 2.6 Ghz (15x173...) ??

Trying to put the waterblock on Ce M die......

Do you think it can work.....
The link shows the specs on the aquagate.....Should work so....
http://www.extremeoverclocking.com/reviews/cooling/Aquagate_ALC-U01_3.html

[Mike@Portugal]

i own a Cooler Master aquagate system
Recently bought a Celeron M 370 (c0) +asus CT-479
Running them on an Asus P4GD1 (Bios 1005...)

Should receive them tomorrow.....(and tell charlie...:)

Can i expect 2.6 Ghz (15x173...) ??

Trying to put the waterblock on Ce M die......

Do you think it can work.....
The link shows the specs on the aquagate.....Should work so....
http://www.extremeoverclocking.com/reviews/cooling/Aquagate_ALC-U01_3.html

I have the same Celeron M 370 (c0) and with stock cooling i can get 2.4Ghz stable (160x15) at 1.425v.

No matter what vcore i put it does not stay stable at more than 165x15 (on windows)

You should have bought the 350J (with 13x multi) and maybe you could boot it at 200x13 with the CoolerMaster Aquagate.

But i don't think the cooling is the problem, my 370 is only 55º at load and 37 at idle with stock cooling.

When you install it please tell us the temperature in idle and full just to check out the eficiency of the CoolerMaster Aquagate.

[Pongi]

- modding the adapter: rising VccA [measuring it first, PLL supply voltage, max.120mA - see those my previouly linked posts for PM-dothan discussion] to 1,8V instead of 1,5V, since C_M supports both voltages. This (overvolting) would help internal Cpu generated_clocks to work better/at higher clocks, same as does overvolting pure core!

This last may be needed, because I found 2 datasheets for P_M, older ones states VccA 1,8V, newer one 1,5V & Asus IMHO took for all CPUs lower one not thinking much about extreme OC-ing!

Damn, if I would be so good in money earnings like I am with modding ideas, I´d be a millionaire .. :D ...

I think this might be the nail on the head, I read over the older Pentium M 90nm specs and it states a typ. 1.8V for VccA. The newer P-M 533FSB CPU's run 1.5V typ. for VccA.

do you happen to know where to measure the VccA voltage? I could probably find out myself but if you know it'd save me the homework :p

[Spajky]

do you happen to know where to measure the VccA voltage
On some of those VccA pins & trying to determine on the adapter from where it comes folowing the traces on PCB; I do not know where that voltage is sourced; I asked before for a largest close/makro detailed photo that somebody could make me of the adapter to study it better; haven´t got it yet ...

[Pongi]

On some of those VccA pins & trying to determine on the adapter from where it comes folowing the traces on PCB; I do not know where that voltage is sourced; I asked before for a largest close/makro detailed photo that somebody could make me of the adapter to study it better; haven´t got it yet ...

I can try to give you some detailed shots of my adapter, but my camera sucks very badly and very old (640x480 and it uses floppies!)

edit: Nevermind, tried it and I can't make out any details at all. Asus used a very dark PCB for this and it's difficult to see anything with the naked eye.

[Jericho]

On some of those VccA pins & trying to determine on the adapter from where it comes folowing the traces on PCB; I do not know where that voltage is sourced; I asked before for a largest close/makro detailed photo that somebody could make me of the adapter to study it better; haven´t got it yet ...


I promise to do some very high res over the weekend for you.

But they will be very big files

[Spajky]

But they will be very big files
will be Ok at 2048x1536/16bit Jpg best quality saved (if I need more, that quality is more than enough if is (upper side only) adapter almost on whole pic surface to enlarge it later at will on my monitor ... :)

[Newbie_User]

To Mike@Portugal

Well....i was hopping for 2.6 stable....
Haven't received it yet...:( Midday maybe

trying to make the water block fit and stay on the Ce M die....
screws are too short i guess...
Talking about the aquagate.....
Previous CPU=Prescott3.2@4.0 Ghz Vcore 1.6
Room temp 25°C/idle 37°C/Load 46°C (sensor directly on the waterblock...shows 55°C in Asus Probe :)
Room temp 17°C/idle 30°C/Load 39-40°C.....:)
I modified it..In the stock version, the exhaust gaz (warm) directly go in the tower....so i've added a fan right there (no fan in stock version...) and exhausts gaz go right through the Power case.....(Tagan 380W...:)
Also, 've cutted the front entrance for more fresh air and changed the front fan (more efficiency/less noise....)

I think that's all :)

Thanks for infos about your rig.....great result fron 1.5Ghz anyway.....

Will tell you when i'll have received it....can't wait any more....



:slobber:

[ibby]

I promise to do some very high res over the weekend for you.

But they will be very big files


I can host them for you guys.

Send us a copy to ibby @ cmia.co.uk
(no spaces) ......
and make the title ct479.

[Jericho]

I can host them for you guys.

Send us a copy to ibby @ cmia.co.uk
(no spaces) ......
and make the title ct479.
oops
:coffee:

[Jericho]

MSG me if link required.

If the server gets hammered i will remove them !

[Spajky]

http://www.techcool.co.uk/overclock/images/

If the server gets hammered i will remove them !
Thanks .. :)

[wwwww]

no, they are locked!

..


then they dont have speedstep



@ wwwww :
have you tried to lower the multiplier & raise more Fsb on your P_M?

yeah basically its like this

17x157
16x166
15x173
14x176
10x181

same as before the mod...

[ibby]

guys i know its a little off beat
but i have a pentim M banjis 1.5 and want to put 1.7v
into it.

whch pins do i mod, and any particulat wires i should use.

Thanks.

Ibby

[Jericho]

Spajky

Have you managed to get anywhere with you idea's ???

[Spajky]

.. no ... (I do not have the Cpu & MoBo/adapter yet to measure stuff myself & try to mod it by myself; sometimes in the future months maybe...); still studying pics of the adapter ...

[Newbie_User]

Right...
Have received the Ce M370....
Tried to mod the waterblock.....done it :)
Mounted motherboard and RAM (2x512 cas 2) and cables.....nightmare (with 2 RAID set...)
Alomost done everything...damned heat sensor plug 've gone wild.....from the waterblock.....downside......have to re-do everything....
Guess i'll only burn my neighbour car....just to unstress......or yel "RRRaaaaaaa"
Don't know.......maybe robbing a bank......

Well, have to get back to work.....

:)

[Jericho]

.. no ... (I do not have the Cpu & MoBo/adapter yet to measure stuff myself & try to mod it by myself; sometimes in the future months maybe...); still studying pics of the adapter ...

I have it totaly stripped out ATM, so if you need any further help just ask.

[Pongi]

.. no ... (I do not have the Cpu & MoBo/adapter yet to measure stuff myself & try to mod it by myself; sometimes in the future months maybe...); still studying pics of the adapter ...

Is the adapter not available yet in Slovenia?

[Spajky]

Is the adapter not available yet in Slovenia?
Yes it is, but since I am stil on Tualatin/BX board setup, I need to change whole base of PC & that is not so cheap at once to do it (MoBo, ram, video card etc) for me; still hunting first for some 2nd hand proper (low) price MoBo (P4P800) first, hard to find here now at the moment, searching on classifields doh ...

PS.: some guy here on my country local forum is running 350J@2,3GHz@1,25Vcore (177Fsb), but he encountered a strange problem (must be bios), if anything than 2225 latencies on ram is set, no boot, P4P800e-_dlx .. interesting ...

[Jericho]

Yes it is, but since I am stil on Tualatin/BX board setup, I need to change whole base of PC & that is not so cheap at once to do it (MoBo, ram, video card etc) for me; still hunting first for some 2nd hand proper (low) price MoBo (P4P800) first, hard to find here now at the moment, searching on classifields doh ...

PS.: some guy here on my country local forum is running 350J@2,3GHz@1,25Vcore (177Fsb), but he encountered a strange problem (must be bios), if anything than 2225 latencies on ram is set, no boot, P4P800e-_dlx .. interesting ...


Is his rams SPD table 2,2,2,5 by any chance ?

[Spajky]

Is his rams SPD table 2,2,2,5 by any chance ?... will ask him (that thread is dying) ...

[wwwww]

guys i know its a little off beat
but i have a pentim M banjis 1.5 and want to put 1.7v
into it.

whch pins do i mod, and any particulat wires i should use.

Thanks.

Ibby

do you have an adjustable vcore in the bios?

if so just connect the VID5 to a VSS (see pic a) and then set vcore in teh bios to 1.196 - since your vcore VID5 will be always 0, at 1.196 you will get 1.708V (see pic b)

If you don't, (the banny's stock vcore is 1.484 right?), then you need to connect VID1, VID2 and VID3 to a VSS (see pic a).

http://img333.imageshack.us/my.php?image=vid13nc.jpg (pic a)
http://img333.imageshack.us/my.php?image=vid5rb.jpg (pic b)

you can just put a square of copper wire around the four pins (as they are in a square formation)...

I use copper wire ripped out from ide cables.

[ibby]

Yes multis are unlocked. :D

I will give that a try in the next couple of days.

[wwwww]

Yes multis are unlocked. :D

I will give that a try in the next couple of days.

sorry i meant vcore... :P

[ibby]

yes vcore is unlocked as well. :D
1.485 is default.. :D

[wwwww]

Ok

Then just ground the VID5. This won't change your stock multi, it will still do 1.484 if you clear the cmos, this just changes the vcore for anything start VID5 normally = 1 (i.e. 0.7V to 1.196V) - if you set to them you will be given a range from 1.212V to 1.708V - that is, if you set 1.196V it will boot at 1.708V, and so on.

http://www.xtremesystems.org/forums/attachment.php?attachmentid=35296&stc=1

That pic is the pic of the socket, so remember that's inverted frm the cpu - I normally put the wire on the socket 'cause my hands shake too much to put it into the pga.

[ibby]

so basically I, put connect the vid5 to vss to give me 1.72 v :D

[Spajky]

Is his rams SPD table 2,2,2,5 by any chance ?SPDs:
166Mhz - 2.5 3 3 7
200Mhz - 3 3 3 8

[Jericho]

SPDs:
166Mhz - 2.5 3 3 7
200Mhz - 3 3 3 8

that is odd,

I was thinking that was the reason why something stops me booting at a CAS other then in the SPD, yet when set in Memtest or Windows a lower value(cas2.5) is very stable.

[wwwww]

so basically I, put connect the vid5 to vss to give me 1.72 v :D

You have to also set it your bios the vcore to 1.196V

[ibby]

You have to also set it your bios the vcore to 1.196V

I knew id forgot sumat :slap:
thanks

[wwwww]

I knew id forgot sumat :slap:
thanks

You're welcome.

[malfunction!]

Having another mess with some 'new' kit... Picked up a P4P800 to replace the P4P800-VM with... Flashed it to the -SE beta BIOS (which has multi, vcore and FSB adjustment) and still seem to be stuck around the same old wall (now ~ 175MHz FSB)... Seems to only want to offer a 1:1 RAM:FSB ratio @ 200MHz or more. Really NOT suspecting my *dothan* celery at the moment because I'm currently priming a *banias* celeron 1.2Ghz @ 2.1Ghz (12 x 175)... Though this banias celery is volt (wire) modded on the chip not the adapter pins so I might be trying that out on my dothan celery soon... May also try swapping out my samsung PC3200 for my crucial PC3200 as I'm having to run the samsung @ 3-4-4-10 with all the mobo's mem acceleration turned off to keep it stable @ ~ 220MHz and the Crucial is a little bit better (though I guess what I really need is a DDR booster...)

[Jericho]

Spajky

Just some information for you that might help.

I did a quick test to check what Voltage feeds the CT-479 uses.

It needs both -ve and +12v & +5v to function.

[Spajky]

Spajky
It needs both -ve and +12v & +5v to function.
Thanks, I could imagine that; but if you look closely around left upper corner of the adapter, there are a lot of components "missing" (by the way, 2 small MosFets), could be that that was primerly ment to directly feed Cpu Vcore, or, the adapter is already prepaired for next version, supporting dual core CPUs! Who knows .. :)

[malfunction!]

Not sure this is the best thread for it but as it's FSB related I thought I'd post it here...

Strange things happening yesterday. My Banias (Pentium M) that lives in my HTPC (in my AOpen 855 board) was overheating a bit after 14 solid days of DVD --> XviD... The chip seemed OK but it was heating up the case a bit and the fans were ramping up... And obviously noise is a big :nono: for my HTPC...

So I thought - sod it - I'm going to replace the existing hack mounted passive heatsink with something that bolts to the mobo and has a fan on... Enter Swifty MCX4000 and some scary mounting (99% certain I've rounded the edges of the core as I couldn't use the stand offs because they were too high). I got much better temps (even with the fan only at 5V) but also better overclocks... Max before was 180 x 10... Can now get to 187 x 10 stable (* haven't fully prime tested it yet) and if I drop down to a 9x multi I can actually get the FSB up to 200MHz whereas before it was 180MHz max even with a 6x multi... Don't get me wrong as soon as load is applied to the CPU it bombs @ 200MHz but this is with bog standard PC3200 CL3-4-4-8 (Edit - actually default is 3-3-3-8) that (because of the 855 board) can only run @ CL2.5-3-3-7 @ 2.6V... So maybe that's the problem here and not the CPU or mobo? Am tempted to try a better cooler on the NB too - see if that helps

[Mike@Portugal]

Not sure this is the best thread for it but as it's FSB related I thought I'd post it here...

Strange things happening yesterday. My Banias (Pentium M) that lives in my HTPC (in my AOpen 855 board) was overheating a bit after 14 solid days of DVD --> XviD... The chip seemed OK but it was heating up the case a bit and the fans were ramping up... And obviously noise is a big :nono: for my HTPC...

So I thought - sod it - I'm going to replace the existing hack mounted passive heatsink with something that bolts to the mobo and has a fan on... Enter Swifty MCX4000 and some scary mounting (99% certain I've rounded the edges of the core as I couldn't use the stand offs because they were too high). I got much better temps (even with the fan only at 5V) but also better overclocks... Max before was 180 x 10... Can now get to 187 x 10 stable (* haven't fully prime tested it yet) and if I drop down to a 9x multi I can actually get the FSB up to 200MHz whereas before it was 180MHz max even with a 6x multi... Don't get me wrong as soon as load is applied to the CPU it bombs @ 200MHz but this is with bog standard PC3200 CL3-4-4-8 that (because of the 855 board) can only run @ CL2.5-3-3-7 @ 2.6V... So maybe that's the problem here and not the CPU or mobo? Am tempted to try a better cooler on the NB too - see if that helps

What temps are you having now at 187x10?

I really think these C-M/P-M benefit more from low temperatures than high voltage.

[malfunction!]

What temps are you having now at 187x10?

I really think these C-M/P-M benefit more from low temperatures than high voltage.

Case temp (mobo sensor) = 34
Idle CPU = 36
Load CPU = 44

Case temp is pretty static if just the CPU is being loaded but it would go higher than that if I was XviD encoding all day again as it would be thrashing the HDD as well as the CPU.

[ibby]

my Banias did 185 fsb
but did not want to boot at 9x multi in a p4p800se

[Spajky]

1. ..Strange things happening yesterday. My Banias (Pentium M) that lives in my HTPC (in my AOpen 855 board) was overheating a bit after 14 solid days of DVD --> XviD...
2. I'm going to replace the existing hack mounted passive heatsink with something that bolts to the mobo and has a fan on... I got much better temps (even with the fan only at 5V) but also better overclocks...
3. Max before was 180 x 10... Can now get to 187 x 10 stable ... and if I drop down to a 9x multi I can actually get the FSB up to 200MHz whereas before it was 180MHz max ..,. as load is applied to the CPU it bombs @ 200MHz ...
4. So maybe that's the problem here and not the CPU or mobo? Am tempted to try a better cooler on the NB too - see if that helpsad1. - nice burn-in of the whole system! :)
ad2. - normal & better so ...
ad3. - some previous job did the job! ...
ad4. - the problem IMHO are other (notVcore) voltages supplied to the chip; so after some burning-in, the chip /also chipset& Ram/ can actualy work with lower ones than supplied; so, with the ones actually supplied, OCs better ... about NB cooling, try only mounting a small fan@5V on the top of actual HS ...

[malfunction!]

I like big butts and I can not lie.... Ooooooooooh dear I have been drinking and I LOVE IT... OOH YEAH BABY!

Err... What the hell? I didn't post that ^^^?

Think someone must have been using my PC on saturday night (the b*)

[oohms]

hey spajky i found something about C-step dothans having "optimised voltage ID", could that have something to do with the fsb limitations? :confused:
http://www.vr-zone.com/?i=2468

[Spajky]

IMHO no ...

[malfunction!]

As before...

My 1.3GHz *Banias* (0.13u) Pentium M running in my AOpen i855 mobo... 10 x 187 seems highest max stable CPU clock but dropping the multi to 9 gets me up to 195MHz FSB. At stock volts too... RAM is plain crucial PC3200 3-3-3-8 / 2.6V (running @ CL 2.5-3-3-7 / 2.6V because that's as high as the timings and RAM voltage can go on this mobo)...

Been priming for 20 minutes so far without error... Off to sleep in a mo (it's 3:40 am here) but will leave Prime running. Temps are 36 case / 50 CPU at the moment (in my LC11 with the 80mm case fans @ 2000RPM and the fan on the swifty MCX 4000 @ 5V)

Edit: Dropped the fans down to 50% on speed fan after I posted this... Been running for 40 mins now without error. Temps have gone up to 39 case / 52 CPU... Really got to go to bed now... 4:00 am is not good... Working in a few hours...

Edit 2: Did just over 6 hours before I stopped the torture test... Temps stayed the same too. I won't go up to 200Mhz though... Maybe another 10 days of DivX encoding will get it there...!

[lktuio]

anyone find a way to overcome the fsb limitation ? :)

[i found nemo]

keep burning them in seems to work pretty good from malfunction! experience

[malfunction!]

keep burning them in seems to work pretty good from malfunction! experience

Worth a try... I can prime for about 20-30 minutes @ 200MHz now (though the USB ports die before prime does...??)

[**FREAK**]

have bought a 360J,

oc result was FSB 180 =2,52ghz but not stable...

@175mhz FSB =2450mhz it was 100% stable....... :(

don`t know, can oc to ~180mhz FSB but i can not run a benchmark, there will be a restart when i start Bench or a Game....but i can hear music, can surf in the i-net,.....also @1,6vcore....

i also disabled onboard-stuff, but no improvement.....

[caater]

Thanks, I could imagine that; but if you look closely around left upper corner of the adapter, there are a lot of components "missing" (by the way, 2 small MosFets), could be that that was primerly ment to directly feed Cpu Vcore, or, the adapter is already prepaired for next version, supporting dual core CPUs! Who knows .. :)

i recently repaired my adapter.. when removing power-connector i somehow replaced 12v and 5v wires and just noticed it by looking others pictures.
silly thing is that adapter worked with wrong voltage..
also i think it doesn't need 5v, the missing spot where that larger capacitor fits, measures 5v from one hole..

btw, you needed markings from chips on adapter.. i have few.. don't have a picture because i don't have digital camera with acceptable macro..

LM324M - i guess we all know this
4DA5F/H882
9915H/507336 - large mosfet
PALS AO/U-FHY7K/6-05081
GTL2005/c326214/fn805/04- - 2 of these on ct-479.

[Newbie_User]

He He
Returned to aircooling....watercooling made the bios run 120°C/-120°C....
Ce M 370J (1.5 Ghz)
asus P4GD1
PCI VGA Card
Bios 1005 (tried 1007 bêta but it won"t run...)
Dual-Channel 2-3-3-6 (Corsair....2x512)
Memory at 392 Mhz

Cpu @ 2.35 Ghz (157 Mhz FSB....) Can't get any further
Vcore @ 1.325 V
Mem @ 1.60 V
Chipset @ 1.50 V
Hyper Path activated
Azalia disabled (sound)
PCI-express freq. @ 105
PCI @ 33.33

Set the memory to follow FSB won't run
I can't get past 157 Mhz FSB.....

Have 275 Mhz mem...so i can test next synchronised RAM ratio...

Any ideas??

(from later...)
That's it...
've set the PCI-epxress frequencies to 90 Mhz....
And i can go up to 173 FSB (RAM@396 in BIOS so 183 i think....2-3-3-6)
2.59 Mhz
V Core is 1.40 v(temp is 50-53°C... :p: )

[Spajky]

caater , thanks for info, will check/search for datasheets later!

BTW, has anybody thought about some Air-Peltier element cooling (Slk900cooler+80W Pelt with coldplate gor GPU´s) for C-M ?

[wwwww]

caater , thanks for info, will check/search for datasheets later!

BTW, has anybody thought about some Air-Peltier element cooling (Slk900cooler+80W Pelt with coldplate gor GPU´s) for C-M ?


http://img136.imageshack.us/img136/6318/im0004517rp.jpg

see those two cables going into the base of the sink....

9C idle - :P

the peltier couldn't handle the chip overclocked on load though

(80W @ 12V)

[caater]

9C idle - :P
the peltier couldn't handle the chip overclocked on load though
(80W @ 12V)

that's what i experienced with 60w pelt + water.. less than 1.45v and chip was cooler than roomtemp.. over that, temp escalated dangerously.. when i saw 80Cs in bios, i stopped the attempt :-P

so dothan isn't THAT cool when overvolted :)

[Jessfm]

i recently repaired my adapter.. when removing power-connector i somehow replaced 12v and 5v wires and just noticed it by looking others pictures.
silly thing is that adapter worked with wrong voltage..
also i think it doesn't need 5v, the missing spot where that larger capacitor fits, measures 5v from one hole..

btw, you needed markings from chips on adapter.. i have few.. don't have a picture because i don't have digital camera with acceptable macro..

LM324M - i guess we all know this
4DA5F/H882
9915H/507336 - large mosfet
PALS AO/U-FHY7K/6-05081
GTL2005/c326214/fn805/04- - 2 of these on ct-479.


I tested with and without +5v, +12v and both grounds- needs all of them or no boot.

[wwwww]

that's what i experienced with 60w pelt + water.. less than 1.45v and chip was cooler than roomtemp.. over that, temp escalated dangerously.. when i saw 80Cs in bios, i stopped the attempt :-P

so dothan isn't THAT cool when overvolted :)
looks like we have to move to the 170Ws :)

prob need a nice swiftech heatsink+delta to cool it :)

[Spajky]

You all forget that Intels TDP is not full load power, but less; on TDP you have to add 35% approx. to get really full load dissipation (to for example compare to AMD power dissipation). :)

[wwwww]

I tested with and without +5v, +12v and both grounds- needs all of them or no boot.

yup - mine requires all as well or no boot

[Pongi]

Bump ye'old thread!

Alrighty, I just picked up a used 350J from ebay and I'm testing it right now. My first go was a little dis-heartening, the CPU hit around 150FSB before having problems (default VCORE). I reflashed (P4P800-SE) and messed around with the jumping settings on my adapter a bit. I got it running 167FSB @ 2.17Ghz, undervolted to 1.16V core! Now I must mention I did have problems with the adapter suddenly not wanting to run 150-180 ish FSB speeds with my P-M 730 (but the CPU can easily do 200x12 on the same adapter) so I dunno, bugs whatever. But If I can hit 200FSB hopefully those issues will not be a problem. I just wonder if this Celeron M can do 2.6Ghz...

[TL1000S]

I would be very positively surprised if your 350J did 200.
So many that have tried... and not succeded.. not very likely.
Had similar experience as you "pongi"...with my 350 M.
No point in increasing VCore..
Actually... Unlike my two Dothan's (730 and 740) OC'ing with increased VCore usually resulted in "no-boot" or freezes in Bios.
I left the VCore to Auto (P4GPL-X) = 1.275 and it went to 164x13=2.13 where it "hit the wall" (likewise with my two "Dothans".. at 213x12=2.55).
Strange that CeleronM :confused:

[Pongi]

I would be very positively surprised if your 350J did 200.
So many that have tried... and not succeded.. not very likely.
Had similar experience as you "pongi"...with my 350 M.
No point in increasing VCore..
Actually... Unlike my two Dothan's (730 and 740) OC'ing with increased VCore usually resulted in "no-boot" or freezes in Bios.
I left the VCore to Auto (P4GPL-X) = 1.275 and it went to 164x13=2.13 where it "hit the wall" (likewise with my two "Dothans".. at 213x12=2.55).
Strange that CeleronM :confused:

Was your Dothan Celeron M's the B1 stepping or the C0 stepping?

update: I'm up to 170FSB now, 2.2Ghz @ 1.2V.

I also have a C-M 350 (non J) that hits only 160FSB, on a good day. Same ol cap on most of those B1's.

[TL1000S]

Was your Dothan Celeron M's the B1 stepping or the C0 stepping?

update: I'm up to 170FSB now, 2.2Ghz @ 1.2V.

I also have a C-M 350 (non J) that hits only 160FSB, on a good day. Same ol cap on most of those B1's.

I'll check up the stepping tomorrow.. Still I must say I think the Celeron M is a good performer, ecpecially considering it's low price..

[lawrywild]

I got a £20 Celeron M 360 off ebay yday :) stopgap till my bday till i an buy real dothan...

bought a ct-479 aswell, coming tomorrow :)

now i just need a compatible mobo (p4p800se), doubt p4p800-x will work..

[tonyl]

I have one Celeron M 350J, using P4P800SE with 1009 bios, I can't change FSB in bios, neither memory speed. I only can reach 140fsb stable. Any beta bios that I can use to adjust FSB and memory in bios?

[wwwww]

I have one Celeron M 350J, using P4P800SE with 1009 bios, I can't change FSB in bios, neither memory speed. I only can reach 140fsb stable. Any beta bios that I can use to adjust FSB and memory in bios?


p4p800se should have fsb control and memory control in bios.

[tonyl]

Yeah, get it working, thanks!

[wwwww]

Whats the best dothan and are dothans better than AMD at gaming

All of the dothans are all pretty close together in clocking ability and pretty random (as in I've seen 730s do 2.9GHz and 750s which didn't make 2.5GHz).

As for better than AMD? Well theoretically yes. Their processing power for such things is quite ahead. But AMD has alot more support.
Eg
No SLI for Pentium M
Hard to get PCI-e boards
Hard to get good ram for them cheap (for AMD, UTT is hell cheap but no good on Intel - you really need old skool bh5s, i guess that micron stuff in crucual ballistix is ok for intel).

[wwwww]

WWWWW thanks for the guide really appreciate it

whoa that was fast, glad to be of service :)

I actually use a Pentium M for gaming because:
a.) I can't afford SLI
b.) I already have a 1337 AGP card
c.) I have a 1337 gig of bh5s

[TL1000S]

I'll check up the stepping tomorrow.. Still I must say I think the Celeron M is a good performer, ecpecially considering it's low price..

Hmm.. seem's like I forgot that thread.. :)
Well.. my 350 was/is C0-stepping.. and I've bought/built a new Celeron M system.. and swapped my 350 with a 740 M (in the P4GPL-X system).
The Celeron M 350 is now installed in a P4P800-E Deluxe.. have not tried any more than 13x164=2.13 yet..
My Celeron M 360 is installed in a P4P800-VM.. and is as of speaking running 14x160=2240... both system at stock VCore (1.25).. The P4P800-VM has very little in Bios for OC'ing, so I'm using Clockgen from Windows (Startup folder).
These system are built as low-budget/good-performance.. both with softmodded 6800LE. I think Celeron M is "value for money".. :D

[lawrywild]

http://img420.imageshack.us/img420/4078/322664qb.png (http://imageshack.us)

Seriously tho.. who ever said Celeron's were slow :D

I have WR in highest clock and fastest superpi I believe

http://valid.x86-secret.com/show_oc?id=48040

[wwwww]

Why isn't PAT enabled? Prob can get an extra second or so..

And does it benefit from extra vcore or is it a bus limitation?

[TL1000S]

I must say again that these Celeron M really surprises me.. positively.
OK.. no one (AFAIK) will do FSB200 (100% OC) but still they perform more than adequate.
My latest system.. still under testing.. manages 65% OC.. so far.
I won't be greedy though.. This is on default VCore.. in a P4P800-VM board.. accompanied with a 6800LE@16x5vp.

[lawrywild]

Why isn't PAT enabled? Prob can get an extra second or so..

And does it benefit from extra vcore or is it a bus limitation?

PAT's disabled because my ram couldnt do 2-2-2-5 @ 226 with PAT lol..

my Celeron M is on stock volts aswell, volts make it worse for me lol..

so 83.57% on stock volts isnt bad eh :cool:

[Spajky]

http://www.xtremesystems.org/forums/showthread.php?t=82191

[caater]

tested out one cm 360J. booted up and did superpi1M @ 165 fsb and 1.3125v, didn't boot at all @ 166+ fsb speeds :confused:
i had a little vcca bump (as described by hipro) but it didn't obviously help.
also, extra voltage didn't help..
did a quick comparison between pm / cm @ 2240MHz:


cm

3dmark 18820
cl 236.5
ch 95.1
dl 344.8
dh 176
ll 274.1
lh 120
nat 122.3

spi1M 38.265
spi8M 7min 53.250

pifast 54.52

pm

3dmark 20135
cl 257.8
ch 102
dl 339.9
dh 181.5
ll 324
lh 139.6
nat 122.8

spi1M 34.029
spi8M 7m 08.076

pifast 52.62

[Spajky]

Well, good that you made those benches; so we now exactly know, that PM is only approx.10% better performer [@ double price!] on same speed/Fsb than CM /Best bang4buck/ ... :)

[caater]

Well, good that you made those benches; so we now exactly know, that PM is only approx.10% better performer [@ double price!] on same speed/Fsb than CM /Best bang4buck/ ... :)
i could rerun pm with normal settings.. with HIGH fsb ;)
fixed multiplier and fsb wall are actually limiting factors :(

as for price.. this celeron cost me exactly 12x less than 780 :)

[Spajky]

... and fsb wall are actually limiting factors ...NOT ANYMORE ! :p: ... see this: http://www.xtremesystems.org/forums/showpost.php?p=1261627&postcount=388 ... :D :toast:

[FunkyRider]

That feed VCCA with 3.3v line was insane :eek:

I'm holding a C0 Celeron M 350J and the FSB wall is 180 as well, wanting to find a peace way of breaking that barrier...

[B33T]

Hi all, I'm new to this forum.
Here are my celeron M results :p:
43381Max clock, but not stable.
43379
43380

Btw, Spajky, very nice getting to boot a celeron M at 200MHz :clap:

[Flash53]

Hi
I´m new here and searching for informations as I want bulding a Dothan system.
On the Intel datasheets I found the new Celeron versions as the 360J have different corevoltage. The specs say 1.004 - 1.292V now. Someone knows what corevoltage the CT-479 adapter will provide then now with this Celeron?
I will go for the P4P800 SE board. What bios version is the best or does it make no difference if it´s 1008 at least.
Thanks.

[lawrywild]

actually you don't :)

i posted that a long time ago, and I hadn't seen anything near as quick as 32.266 at the time..

ofcourse now i don't

[Spajky]

That feed VCCA with 3.3v line was insane :eek:
Actually, the Cpu heroically died after being suplied with 4,35V VCCA :cool: running higher than 200Fsb ...


the new Celeron versions as the 360J have different corevoltage. The specs say 1.004 - 1.292V now. Someone knows what corevoltage the CT-479 adapter will provide then now with this Celeron?
IMHO with 1,26Vcore@boot but will OC better later since having lower default Vcore ...

[Uschi M.]

Hi
I´m new here and searching for informations as I want bulding a Dothan system.
On the Intel datasheets I found the new Celeron versions as the 360J have different corevoltage. The specs say 1.004 - 1.292V now. Someone knows what corevoltage the CT-479 adapter will provide then now with this Celeron?
I will go for the P4P800 SE board. What bios version is the best or does it make no difference if it´s 1008 at least.
Thanks.
Hello all.

I'm new here, too. Sorry for my English, I'm from Germany.

The Celeron-M 360J gets 1.294-1.314 V on my P4GPL-X. sSpec-No. SL8ML.

But I have the problem with fixed Vcore, too. Same as lawrywild. No way to adjust a higher voltage. Tested with 2 brandnew boards, both the same. So my C-M is a poor overclocker and at 150 MHz FSB it hits the wall. And without the chance to give it any more voltage this is very disappointing.

I tested the boards with a P4 Northwood and it gets 1.58-1.60 V instead of 1.5 V default. Quite a bit overvolting. With this CPU I can increase Vcore. But not decrease...
Very weird. Both boards show the same behavior.

Is it possible that ASUS assembled a series of faulty P4GPL-X? Maybe some components are out of tolerance.

Greetings,
Uschi.

[lawrywild]

Hello all.

I'm new here, too. Sorry for my English, I'm from Germany.

The Celeron-M 360J gets 1.294-1.314 V on my P4GPL-X. sSpec-No. SL8ML.

But I have the problem with fixed Vcore, too. Same as lawrywild. No way to adjust a higher voltage. Tested with 2 brandnew boards, both the same. So my C-M is a poor overclocker and at 150 MHz FSB it hits the wall. And without the chance to give it any more voltage this is very disappointing.

I tested the boards with a P4 Northwood and it gets 1.58-1.60 V instead of 1.5 V default. Quite a bit overvolting. With this CPU I can increase Vcore. But not decrease...
Very weird. Both boards show the same behavior.

Is it possible that ASUS assembled a series of faulty P4GPL-X? Maybe some components are out of tolerance.

Greetings,
Uschi.

yeh possibly that or I have come to the conclusion that the bios doesn't contain my cpu's microcodes, stupid ASUS idiots..

I may jus do vcore mod later this week..

I might also try putting in my celeron M 360 (non-J) and see what happens with that..

[Uschi M.]

I just had a phone call with an ASUS employee a few minutes ago. He told me that's the problem with OEM CPUs. It's microcode/ID is not properly implemented in BIOS. Could be lucky my CPU is running at all.

And no one will write a new BIOS for some OC enthusiasts...:eek:

He advised me to buy a retail prozessor.

[Spajky]

Default Vcore for C-M is 1.26V - Cpu microcode has nothing to do with Vcore, Vid pin combination and Vcore controller chip on MoBo does! Search for Vcore Vid pin trick mode ...

[Johnny Bravo]

Hmmm have been experiencing some strange side effects of using a C-M on a P4GD1 motherboard. To start with the chip correctly instructs the board to supply 1.26volts to the chip, however, My board has a vcore mod, adjusting this in the usual manner at this voltage causes the vcore to do DOWN rather than UP, why is this? Next, THE P4GD1 DOES ALLOW YOU TO RAISE THE VCORE IN THE BIOS SUCCESSFULLY, BUT chosing a settting lower than 1.55volts reuslts in a undervolt reading at the core, above and it is the usual overvolt that the board "normally" supplies (for instance when a dothan or P4 is inserted). When vcore is abouve 1.55volts the vcore mod also starts behaving normally. Has anyone any idea why this would be? effectively it is of little odds, increased vcore has little effect on the overclocking potential of the C-M but I'm curious as to why this vcore issue arrises.

[lawrywild]

Default Vcore for C-M is 1.26V - Cpu microcode has nothing to do with Vcore, Vid pin combination and Vcore controller chip on MoBo does! Search for Vcore Vid pin trick mode ...

couldn't really find anything much on this, would you care to point me in the right direction?

thanks :)

[Flash53]

Hello all.

I'm new here, too. Sorry for my English, I'm from Germany.

The Celeron-M 360J gets 1.294-1.314 V on my P4GPL-X. sSpec-No. SL8ML.

But I have the problem with fixed Vcore, too. Same as lawrywild. No way to adjust a higher voltage. Tested with 2 brandnew boards, both the same. So my C-M is a poor overclocker and at 150 MHz FSB it hits the wall. And without the chance to give it any more voltage this is very disappointing.

I tested the boards with a P4 Northwood and it gets 1.58-1.60 V instead of 1.5 V default. Quite a bit overvolting. With this CPU I can increase Vcore. But not decrease...
Very weird. Both boards show the same behavior.

Is it possible that ASUS assembled a series of faulty P4GPL-X? Maybe some components are out of tolerance.

Greetings,
Uschi.
Hi Uschi.
I´m from Germany also. Will send you PM.

[Spajky]

couldn't really find anything much on this, would you care to point me in the right direction?

thanks :)You need to open/short some those Vid pins on MoBo´s back or on socket from pinhole to pinhole with tiny tiny copper wire taking care not to short something else & not to miss pins! Take much much care!!! This way you trick the MoBo´s onboard voltage regulator chip, that the default Vcore is higher, bios than allows going even higher, do it in small steps!

Celeron-M datasheet-apr2k5
30311004.pdf (search developer.intel.com site)
chapter 3 table 3.1 (p.16)
chapter 4 table 4.7 (p.36)
Vid pins left upper corner
NOTES:
0 = Processor pin connected to VSS. and 1 = Open on processor

hope it helps ... :)

[Uschi M.]

Hi Uschi.
I´m from Germany also. Will send you PM.
Do it. You're welcome.

Right, default Vcore for C-M is 1.26 V. But mine is a SL8ML with OVID.

Please look at CPU-World: SL8ML (http://www.cpu-world.com/sspec/SL/SL8ML.html). This sSpec-No does not appear on Intel sSpec Finder sites and there is no RJ- or RH-No. Seems to be just an OEM CPU, produced for IBM.

So my P4GPL-X correctly hits the maximum core voltage of 1.292 V.

I don't want to do any mods with my mobo so far, because adjusting vcore MUST work. I'm looking for a solution and can't believe ASUS 'til I have a proof, that OEM CPUs do not properly work.

[lawrywild]

You need to open/short some those Vid pins on MoBo´s back or on socket from pinhole to pinhole with tiny tiny copper wire taking care not to short something else & not to miss pins! Take much much care!!! This way you trick the MoBo´s onboard voltage regulator chip, that the default Vcore is higher, bios than allows going even higher, do it in small steps!

Celeron-M datasheet-apr2k5
30311004.pdf (search developer.intel.com site)
chapter 3 table 3.1 (p.16)
chapter 4 table 4.7 (p.36)
Vid pins left upper corner
NOTES:
0 = Processor pin connected to VSS. and 1 = Open on processor

hope it helps ... :)

if you mean the 1.55v "uwire" mod, I've already done that, or is this something else, like tricking the motherboard into thinking its a retail proc?

[Spajky]

if you mean the 1.55v "uwire" mod, I've already done that, or is this something else, like tricking the motherboard into thinking its a retail proc?If you have done the wire trick on adapters socket, thats it ...

[Spajky]

default Vcore for C-M is 1.26 V. But mine is a SL8ML ... Seems to be just an OEM CPU, produced for IBM....I don't want to do any mods with my mobo so far, because adjusting vcore MUST work. I'm looking for a solution and can't believe ASUS 'til I have a proof, that OEM CPUs do not properly work.your problem is that your CPU is screaming: "I am crippled, I have a pin less than most of my brothers". Probably is missing some Vid pin; you will have to check comparing datasheets, check for that Intels site! It has nothing to do with Asus hardware & do not aspect any further official Bios update ... probably you will have to do same wire trick to achieve higher Vcore as I adviced to lawrywild ...

[Uschi M.]

OK.
Is that why one P-M is called 479-pin and another 478-pin? Both of them have 478 pins, but something is different or/and missing?

But why can vcore be adjusted on a P4P800-SE and NOT on a P4GPL-X with the SAME CPU?

I'm still looking into a black hole...:confused:

[Spajky]

OK.
Is that why one P-M is called 479-pin and another 478-pin? Both of them have 478 pins, but something is different or/and missing?

But why can vcore be adjusted on a P4P800-SE and NOT on a P4GPL-X with the SAME CPU?
probably some connection for some Vid pin on 2nd MoBo different; who knows ...

[Johnny Bravo]

:D

360 + VCCA mod + TEC = :toast:

http://img143.imageshack.us/img143/7240/sub295sl.jpg (http://imageshack.us)

The chips still hasn't reached it's limits, had it at 3114.6MHz before it crashed. These speeds are SPi 32M stable too ;) Currently running @ 3.1v on the VCCA, seems the chip is buring in, first run unstable then 2-3 runs later SPi 1M stable, 4-5 runs later SPi32M stable. Look forward to pushing it further :p:

[Fixxxer]

:woot:

How cold are you running this little 360?

[cirthix]

HOLY CRAP jhonny bravo, that's insane

bravo :P

[ewitte]

Just tested clockgen on an HP s7320n and it works great. Its an ultra small SFF pc with normal 200GB hard drive and dvd burner. But it is FSB locked so it never goes over 2345Mhz. At that my SP1m is 37.186 seconds. Not horribly great but ok seeing it gets 55 seconds stock.

[ewitte]

Here is a PIC

http://s150233688.onlinehome.us/spi1m2.JPG

[Spajky]

:D
360 + VCCA mod + TEC = :toast:
The chips still hasn't reached it's limits.....runs later SPi32M stable. Look forward to pushing it further :p:DON'T !!! (we do not need anymore dead heroes!) Isn't 120% OC enough ??? :cool:

your Vcore is more than 30% higher than default, tragedy aproaching every second closer ... at your place, I would stop @ 3G sharp TL stable with lower all voltages & very slowly burning-in it thru time /few weeks!/ from defaults up again with patience & no hurry !!!

C-M 360 = 13W TDP! Thats Intel data; but ... Real (not Intel´s TDP) thermal dissipation is around 35% more at real full load (as for example AMD mesures it!)

With so overvolted & OC-ed your max.real heat dissipation /real full load/ is more than 60W !!! "Thermoelectric migration" is probably slowly killing your CPU right now! Can easily happen, that after a time, you won´t be able to run it neither @ 3GHz totally stable anymore !!! Think about it before is too late !!!

What kind a TEC you have ? (nominal voltage/watt-age) With how much voltage you are running it ?

[Pongi]

Hey Johnny, what resistor values you using to push 3.1V VCCA? Actually I'm more interested in the 2.5-2.7 range if you know.

[BlueWonder]

DON'T !!! (we do not need anymore dead heroes!) Isn't 120% OC enough ??? :cool:

your Vcore is more than 30% higher than default, tragedy aproaching every second closer ... at your place, I would stop @ 3G sharp TL stable with lower all voltages & very slowly burning-in it thru time /few weeks!/ from defaults up again with patience & no hurry !!!

C-M 360 = 13W TDP! Thats Intel data; but ... Real (not Intel´s TDP) thermal dissipation is around 35% more at real full load (as for example AMD mesures it!)

With so overvolted & OC-ed your max.real heat dissipation /real full load/ is more than 60W !!! "Thermoelectric migration" is probably slowly killing your CPU right now! Can easily happen, that after a time, you won´t be able to run it neither @ 3GHz totally stable anymore !!! Think about it before is too late !!!

What kind a TEC you have ? (nominal voltage/watt-age) With how much voltage you are running it ?

Rather dramatic.
I believe in you Johnny.
C'mon push it further... you know you want to. :devil:

[Johnny Bravo]

DON'T !!! (we do not need anymore dead heroes!) Isn't 120% OC enough ??? :cool:

:D enough ? I don't think many people round here understand the word "enough" :stick: Just Kidding man :toast:


your Vcore is more than 30% higher than default, tragedy aproaching every second closer ... at your place, I would stop @ 3G sharp TL stable with lower all voltages & very slowly burning-in it thru time /few weeks!/ from defaults up again with patience & no hurry !!!

Yes this is true, currently I have the voltage back down to 1.43 volts but as I explained earlier in this thread (I think) THe P4GD1 is quite awkward for vcore, undervolting then suddly overvolting at ~1.5volts therefore decided to give the chip a little juice to help it on its way :p:


C-M 360 = 13W TDP! Thats Intel data; but ... Real (not Intel´s TDP) thermal dissipation is around 35% more at real full load (as for example AMD mesures it!)

With so overvolted & OC-ed your max.real heat dissipation /real full load/ is more than 60W !!! "Thermoelectric migration" is probably slowly killing your CPU right now! Can easily happen, that after a time, you won´t be able to run it neither @ 3GHz totally stable anymore !!! Think about it before is too late !!!

What kind a TEC you have ? (nominal voltage/watt-age) With how much voltage you are running it ?

The TEC I'm using is complete overkill for its application 266W model running at 13.2 volts :eek: so temps under load are usually ~-19oC or so. In these circumstances the effect of thermoelectric migration is signifigantly retarded.

I will also say this, the C-M chip cost me £10 and in fairness I won't be crying if it was to die, it's had a good run so far and I hope to have a little more fun with SuperPI times as soon as I've my P4C800 setup :fact:

However I fuly understand and respect your concerns Spajky as there may be those out there with more expensive chips wanting to do the same thing. Your are right to stress the upper limit of the VCCA mod, that's an easy way to loose a perfectly good chip :slap: We'll let the chip burn in for awhile now and see what it does next :rolleyes:


Hey Johnny, what resistor values you using to push 3.1V VCCA? Actually I'm more interested in the 2.5-2.7 range if you know.

Pongi, will a resistance value measured directly from the board as in not the actual value of the resistor but what it appears to be attached suffice? I believe that the onboard resistance is something like 1.2kohm but dont quote me on that, check Georges (Hipro5) post on the subject in the mods section for the adaptor for exact values. I'll get you a number tomorrow nite at the soonest :toast:

[Pongi]

Pongi, will a resistance value measured directly from the board as in not the actual value of the resistor but what it appears to be attached suffice? I believe that the onboard resistance is something like 1.2kohm but dont quote me on that, check Georges (Hipro5) post on the subject in the mods section for the adaptor for exact values. I'll get you a number tomorrow nite at the soonest :toast:

Thanks, the total resistence across the conjuction would suffice.

[Spajky]

The TEC I'm using is complete overkill for its application 266W model running at 13.2 volts ....
I will also say this, the C-M chip cost me £10 and in fairness I won't be crying if it was to die ...

huh, TEC does still 200W effectivelly; yeah, its more than enough :p: with waterCooling ; but an excelent chip is shame to waste even if it costed almost nothing :rolleyes:

[Johnny Bravo]

huh, TEC does still 200W effectivelly; yeah, its more than enough :p: with waterCooling ; but an excelent chip is shame to waste even if it costed almost nothing :rolleyes:

True, but I dont view it as a waste, I view it as a trailblazer :D

[BlueWonder]

True, but I dont view it as a waste, I view it as a trailblazer :D

Lol, I have to agree. When you have a chip as cheap as that, you can afford to run it into the ground. It's all in good fun. Try and approach it from an XS perspective.. Would it be xtreme if he didn't?

[ewitte]

Hmm. I guess I was not at a FSB limit. After laying it on top of my window AC unit I got another 40Mhz or so. No more yet because it looks like the onboard video is tied to FSB. I video artifacts and lock shortly after that. Not bad for an HP SFF. BTW its 915 but this program works slightly better than clockgen.

http://s150233688.onlinehome.us/spi1m3.jpg

[caater]

ewitte, that's an odd celeron M, with 8x multiplier and capable of 297MHz FSB..

[ewitte]

ewitte, that's an odd celeron M, with 8x multiplier and capable of 297MHz FSB..

Don't pay too much attention to the numbers. If you look at it in clockgen with the correct chipset/timer it says about 148-149FSB. I can't change the multiplier or voltage :( I'm seriously looking into popping a 745 in there.

[Johnny Bravo]

Thanks, the total resistence across the conjuction would suffice.

For ~2.5volts I measure the onboard resistance to be 720ohms

Have fun :toast:

[Pongi]

For ~2.5volts I measure the onboard resistance to be 720ohms

Have fun :toast:

Thanks a ton Johnny!

[Micutzu]

Time for thread revival guys :D

Celeron M 350 (13X100 = 1.3Ghz)
Asus CT-479 / Vcca mod
Asus P4GPL-X / all mods
2x512MB Corsair PC3500 BH-5
X550, etc etc

Vcore= 1.63V
Vcca= 3.29V
Vpci= 1.805V
Vdimm= 2.9V

Celeron 1.3Ghz @ 2.92Ghz = 125% overclock on stock cooling (http://valid.x86-secret.com/show_oc?id=83194) :D

[Bogi]

:toast:
very nice

[viper650]

Time for thread revival guys :D

Celeron M 350 (13X100 = 1.3Ghz)
Asus CT-479 / Vcca mod
Asus P4GPL-X / all mods
2x512MB Corsair PC3500 BH-5
X550, etc etc

Vcore= 1.63V
Vcca= 3.29V
Vpci= 1.805V
Vdimm= 2.9V

Celeron 1.3Ghz @ 2.92Ghz = 125% overclock on stock cooling (http://valid.x86-secret.com/show_oc?id=83194) :D

whoa, lets see some super pi times! thats awsome!

i clocked my 1.5ghz celly m to 2.15(wont go any higher on my laptop) currently 2nd as far as my celly goes.

[Spajky]

Vcca= 3.29V
Celeron 1.3Ghz @ 2.92Ghz Bravo :clap: , but till now is been found, that Vcca is not safe to be kept over 3V [double the value & double the max current recommended there] !! long term. Now since IMHO you made world record with C_M, it is time to lower that voltage not to kill something!. But make a SuperPI result before that !! :) to see us the 1M result!

What are than OC results & SuperPI 1M @ 3V Vcca? This is ordinary/older Dothan C-M_350 isn´t it? B1 step. is older one (C0 newer rev.350J), not sure, I forgot ...

After lowering OC, test it with THIS : already prepaired 16kb test (http://users.volja.net/jerman55/Burn-In.zip) & tell us till where (clock!) it can handle it

:clap: again ! :) [if is not just a April Fools Day joke ..:woot: ]

[Micutzu]

Thanks guys, indeed 3.3V Vcca is a little extreme, but afterall it's a $40 CPU :). Actually i was thinking of extra mods for the adapter to allow more than 3.3V for Vcca after i'll switch to a little better cooling.
The Celly is indeed B1 (older) stepping and seems to Prime just fine at 2.6Ghz / 1.42V Vcore / 2.95V Vcca. I've tried a SPi 1M at 2.8Ghz, it's in the 31's on a really dirty OS with no tweaks ... remember this is P4GPL-X and it's at least 1s slower than the P4C800's out there at the same clocks.

[Pongi]

That's impressive for a B1 stepping. I wonder how a C0 Celeron would do?

[Spajky]

http://www.xbitlabs.com/web/display/20060418124251.html

I think it is time to check for its datasheet to see if there would be any chance to modify CT479 adapter for those C-Ms (core Solo-same pinout like Duo). We need to compare Dothan 2 Yonah pins differences since I believe the differences are not greater than at times of P3 to Tualatin mods era; IMHO Yonah should work on same Dothan Bios-es; just minor core differences with core production shrinking I believe ... start "brainstorming" :) ...

[TL1000S]

If this was possible.. Celeron M 4n0 .. "modded" to run on CT-479.. I guess this would aslo apply for Yonah.
As a budget system capable of "extreme" benches it sure would be nice if it was possible to run thos new Celeron M's on Asys CT-479 compatible board (I have "a few" btw).. :)

[FunkyRider]

There is NO WAY to let 479 be compatible to 480, they are so different, don't even think about it man :eek:

[Maviryk]

Sort of off topic here, but what is the max "safe" voltage for Vcore on Dothans? I have mine running 2940MHz (12x245) @ 1.775volts, VCCA @ 1.8v, Vdimm 2.65v, AGP VDDQ 1.8v. SPI 1M 26.420secs

I'm not getting much droop since I've done the Vdroop + the combined Vdroop+Vcore mod, about 16mv according to onboard, DMM about 1mv.

Running P4C800-EDlx on 1024beta bios. Hipro5 mods on adaptor. Chip is watercooled so I'm not worried about temps, Load is at 33C.

[Spajky]

...what is the max "safe" voltage for Vcore on Dothans. Chip is watercooled .

I believe max.1,65 for air; maybe 1,75 max for water ... :)


There is NO WAY to let 479 be compatible to 480, they are so different, don't even think about it man :eek:

Probably true; but ... we should check & compare datasheets anyway first; there could be a slight chance to do some mods (rewireing some pins etc. to maybe make it work anyway like at Tualatin mod times)

[Maviryk]

Hmm... I'm so close to 3GHz though!

Might be time for me to find a 5K Ohm resistor to adjust VCCA higher than 1.82 to see if that helps.

My temps haven't gone past 33C yet, but it is not summer. In summer I think maybe 36C max temp.

[Johnny Bravo]

I think it's time for me to reclaim my crown again...:D

[Maviryk]

It's not a celeron, it's a PM750 btw.

I need to figure out where to get a 5k ohm 25 turn trimmer locally, the only ones I can find are 10k ohm.

[oktavius]

Oktavius << 36,704 sec << Celeron M 380 1600 @ 2600Mhz 16x163 @ default - Value Ram 2-3-3-6 << screen (http://gm.pc-modz.de/spi/superpi_380_2616_163.5_1.3.JPG)

[C_B]

my best C-M350 @ asus stock cooler

ct-479 mod 2,6Vcca / 4,3Vchip

http://img428.imageshack.us/img428/4148/snag00117vd.jpg

[Micutzu]

Very impressive ! What mobo were you using and what was the ambient temp ?

[C_B]

P4C800e-dlx and temps?
no idea, I don´t trust the Winbond-chip ...

but stock cooling hmmm I think about ~55°C

[Johnny Bravo]

C_B is that win2000 or XP? That time you've got is very good, faster than me at lower clocks :D care to chat a little on tweaks?

[C_B]

that´s WinXP
in my gallery u find more good benches :D
http://www.forumdeluxx.de/gallery/showgallery.php?cat=500&si=&page=6&sort=1&perpage=12&password=&ppuser=14281&what=&name=&=


okay my tweaks?

hmmm disable all USB Network Sound options
a new winXP installation with Windows default Grafics driver,
defragment your partition
goto Performace Options -> Advanced
vis.effects for best performance
CPU-scheduler to programs
Mem to systemcache
pagefile=0

reboot with diagnostic start (msconfig) to shut down some services ...
set SuperPi to realtime mode

done :cool:

[Johnny Bravo]

Apart from the "disable all USB Network Sound options" I've got them covered, can't wait to get my P4C800 sorted out again for such events :D we should have a little mini comp for ourselves here, do it for the pride :toast: what say ye gentlemen ?

[Micutzu]

OK, i'm in with my poor P4GPL-X :).

[ex.treme]

Now i have here for testing Celeron M 370 1,5ghz @2400mhz @1,4v
I will try moore :rolleyes:

[caligula]

Breaking up the dirty thirty with my humble celly.
Mobo is P4P800SE. P4GPL-X sucks indeed.

BTW, processor hits a wall at FSB 186 in P4GPL-X. Moved to a P4P800SE, same vcca, same vcore, boots with no problem at FSB 200. Pretty strange since my P4GPL-X ran flawlessly a P-M 750@2.8GHz. The processor is not the problem, the mobo is not the problem, where the *^^&*^ can the real problem be?

[caligula]

Solved the mystery with the so-called celeron-m fsb capping. Looks like there is a P4GPL-X/P4GD1 BIOS problem (I suspect Assus intentionally crippling the bioses to a certain fsb as they have done with P4S800D-E "i875 killer" and Asrock 939dual-sata2). Using clockgen, I got the same results as on P4P800SE. Otherwise, system refuses to start when going over FSB 186 no matter what.

[i found nemo]

lol so "assus" (lmao) cripples the bios for celery's only? cuz pentium m's dn't have fsb issues did they?

[Johnny Bravo]

Solved the mystery with the so-called celeron-m fsb capping. Looks like there is a P4GPL-X/P4GD1 BIOS problem (I suspect Assus intentionally crippling the bioses to a certain fsb as they have done with P4S800D-E "i875 killer" and Asrock 939dual-sata2). Using clockgen, I got the same results as on P4P800SE. Otherwise, system refuses to start when going over FSB 186 no matter what.



errr no, the limit is ont he chip as folk have used various boards (not just Asus) and encountered the same problem. Anyhow, with a bit of VCCA you can easily get past 200MHz...

http://img61.imageshack.us/img61/729/3354ghz9oq.jpg

[i found nemo]

i need a bios for the p4p800 se board for my rig i'm trying to build, would someone be nice enough to link or upload it? plz plz plz?????


what is vcca? for the north bridge?

[TL1000S]

i need a bios for the p4p800 se board for my rig i'm trying to build, would someone be nice enough to link or upload it? plz plz plz?????


what is vcca? for the north bridge?

Usually the manufacterers Website (http://support.asus.com/download/download.aspx?SLanguage=en-us&model=P4P800%20SE) is a good place to get Bios versions..
Regarding mthe "VCCA-mod" it should be found here in the thread.. and elsewhere... (Not recommended for the lesser experienced.. and better reserved for "frying" Celeron M chips).. :D

[caligula]

i_found_nemo, frankly said, you should find another thread to have fun in.
The vcca mod is applied to the CT479 adapter and is described in the respective ct479 mods sticky thread - look for the post made by Hipro5.
johnny, the chip does not react to vcca, starting from 1.7V all the way to 3.2V.
I can tell you what happens: exactly at FSB 187, the board refuses to start. The chip can prime flawlessly at FSB 186, 2V VCCA, increasing the vcore or vcca (vdd is at 1.8V) doesn't help a damn. Using clockgen, I got past FSB 195 quite easily. Since the bios does not allow me to increase fsb but clockgen does - and mobo can handle it, guess who might be the problem.

[ex.treme]

Im on 2545 mhz. End is at 175 fsb no post whatever i do. :cool:

[Rutz]

Little bump to this old thread :rolleyes:
24/7 clocks for my new low-budget rig:

Celeron M 360J (C0) @2342MHz (14x167) 1,35v, inbox cooled
Asus P4GPL-X + Asus CT-479
512MB Winbond BH6 167Mhz 2-2-2-4-2 (single channel :( )
SuperPi 1M - 39,812s (http://www.zone.ee/rutz/167x14%201M.JPG)

Not bad at all for 25$/20€ CPU :woot:
FSB stuck @~170 for this one. :slapass:

EDIT:
Got 2x256 Corsair BH5&#180;s:banana:
Celeron M 360J (C0) @2342MHz (14x167) 1,35v, inbox cooled
Asus P4GPL-X + Asus CT-479
2x256MB Winbond BH5 167Mhz 2-2-2-4-2
SuperPi 1M - 37,500s (http://www.zone.ee/rutz/167x14%201M%2037.500s.JPG)

EDIT2:
Got new Cel M 350J
Max FSB ~185 :up:
Paid ~10€ for it

Intel Celeron M 350J (C0) 1300MHz @2405MHz (13x185) 1,28v
Asus P4GPL-X + Asus CT-479
2x256MB Winbond BH5 185MHz 2-2-2-4-2

SuperPi 1M - 35,625s (http://www.zone.ee/rutz/185x13%201M%2035.625s.JPG)