How to overcome the 300fsb benching wall ? Asus P4C800E

[brwmogazos]

My cpu is capable of benching a lot higher than 4200mhz however as usual the 300fsb wall is still there...

the PC just slows down

unlocking my PCI and AGP and setting it to something higher overcomes this problem

BUT

My ICH5R freaks out...locks the SATA 200GB storage drive i have got....and then if i try to bench the pc just crashes....

for example super pi just gives an error... it wont run till the end....

rarely i get away with a few seconds or a run of super pi at higher speeds but i am just annoyed i cant bench at higher than 300fsb with my 2.8 :(


My Setup:

nVENTIV MACH 2 GT

Intel P4 2.8C SL6Z5 prime stable @ 4100mhz @ ~1.75V

1GB OCZ 3700EB max memtest error free: 242mhz @ 2.5 2 2 5 turbo, enabled, infinite, 64msec

NB cooled by the Tiger 1 TT

Vdimm 3.05V...tried 3.15V....doesnt affect it :p

Vagp 1.7V

PCI unlocked etc....in the bios...then booting windows or altering the agp and pci with clockgen in windows...

i just CANT bench at over 300fsb .... super pi goes mad..

this 2.8 i got is a great cpu....tried a 3.0C ....and a 3.2 but they just werent something excpeptional....

is the only solution to ditch the 2.8 and get another cpu?

my 2.8 is prime stable at 4100 (will be trying higher too) and any other cpu i used seemed to max at 4~4.2ghz so i couldnt justify keeping since the 2.8 gives me a high fsb...

Any ideas?

could it be the ram?

i have also tried disconnecting the SATA 200GB maxtor before booting...still the ICH5R freaks out...and needs shutting down the board to be fine again...

i wanna use a 3.4 now but i just dont think its worth all tha extra money tbh over a 3 or 3.2...

[enzoR]

not familiar with P4C800 but dont you have a different SATA controller besides the ICH5R? i'm talking about like on the Abit Ic7 series you also have the siliconimage controller. that one can handle greater pci speeds.

[brwmogazos]

i dont mind about the ICH5R mate...

i aint using a sata hdd

i am using scsi...15K scsi for boot etc so its a pci card...

the card is fine...its the SATA controller freaking out....

[saaya]

i think there was a trick to rise the pci/agp clocks by just a few mhz wich gave many people the ability to run above 300mhz. try it.

[brwmogazos]

tried that :)

its a no go though...

i have been running higher PCI and AGP with most of my 300fsb + overclocks...its just that my rig seems to freak out above 300fsb...the slow down is bypassed by upping the pci and agp speeds but still...i cant bench :(

[hipro5]

Try Vagp at it's max Voltage that you can take from this mobo ....... and -or....mod the Vagp to go a bit higher...... ;)

[brwmogazos]

hipro i was thinking of doing the VAGP mod before installing my board in my case...

i heard 1.8V is plenty + some graphics cards have died from high VAGP so i didnt do the mod along with my Vdimm and Droop...

i was gonna leave the country next wednesday...something came up and i will have to wait another 3 weeks now...so untill i get the chance to do the mod its gonna take a while...
LOL

anyways...so you reckon it needs some more juice?

[hipro5]

I feed my Club 3D 9800pro with 75MHz AGP bus and 1.98Vagp with NO problem at all......I lose about 5MHz to 7MHz core GPU overclockability with the 75MHz AGP but I'm OK.......I've moded over 15-20 pieces of 9800's with no problem at 1.95Vagp........Also 5900 and 5950 are OK with that Vagp.......Give it a try at 1.85Vagp......

[saaya]

cool! so those dead cards from high vagp are def a rumor, and the cards must have died from something else.

good to know! :toast:

[enzoR]

you can disable the onboard ICH5R cant you? in the IC7 its under "onchip pci device" i had the same problem. once i disabled everything including fireware and audio it was fine for me.

[hipro5]

Originally posted by enzoR
you can disable the onboard ICH5R cant you? in the IC7 its under "onchip pci device" i had the same problem. once i disabled everything including fireware and audio it was fine for me.

Nice tip too...... ;) :toast:

[hipro5]

Originally posted by saaya
cool! so those dead cards from high vagp are def a rumor, and the cards must have died from something else.

good to know! :toast:

I have "fu*ked" them ALL and noone died on me with high VAgp........One which died was because we had squiz it so hard(it's core) that we heard some "cracks" in it........ :D

[brwmogazos]

Originally posted by hipro5
I feed my Club 3D 9800pro with 75MHz AGP bus and 1.98Vagp with NO problem at all......I lose about 5MHz to 7MHz core GPU overclockability with the 75MHz AGP but I'm OK.......I've moded over 15-20 pieces of 9800's with no problem at 1.95Vagp........Also 5900 and 5950 are OK with that Vagp.......Give it a try at 1.85Vagp......

i just tried with 1.8V agap

still nothing...

fed the cpu with loads of vcore too....so at 4282mhz or thereabouts it just freaks out...again i get the error that some data could not be saved into my sata hard drive... lol

[brwmogazos]

Originally posted by enzoR
you can disable the onboard ICH5R cant you? in the IC7 its under "onchip pci device" i had the same problem. once i disabled everything including fireware and audio it was fine for me.

i have thought of that ever since i run into problems..with the sata controller freaking out....

tbh i couldnt find that in my P4C800E bios...lol

onboard sound is disabled anyways....so i unplugged my sata hdd and obviously it freaked out again...i only want to disable the sata controller for benching and then get it back to work :D...


i have disabled the promise(?) sata raid controller but the one integrated with the ICH5R i just cant seem to find the way to do it...

i guess i am blind :p

i tried cpus with higher multis but they werent that good as my 2.8...not stable that would justify keeping them over the 2.8 anyways.. :(

[enzoR]

i take it your useing clockgen or simillar to adjust past 300mhz?

that setting has to be there!!! otherwise, stupid asus :p:

[hipro5]

SO.............I think that you have > RAM<>Northbridge problems........Try to bench at 3:2 and see what happens......BTW On 3:2 try some other configs for the RAMS... ;)

[enzoR]

Originally posted by hipro5
I have "fu*ked" them ALL and noone died on me with high VAgp........One which died was because we had squiz it so hard(it's core) that we heard some "cracks" in it........ :D

LOL :D :toast:

[brwmogazos]

Originally posted by enzoR
i take it your useing clockgen or simillar to adjust past 300mhz?

that setting has to be there!!! otherwise, stupid asus :p:

yeah i need to experiment with the bios to find the proper setting for it...which tbh i cant see :p

anyways yeah i boot at 300fsb from bios...then increase it with clockgen....

[hipro5]

Originally posted by enzoR
i take it your useing clockgen or simillar to adjust past 300mhz?

that setting has to be there!!! otherwise, stupid asus :p:



OFF topic.........Hey enzoR , I just show you're from Netherlands........I have a friend of mine(Greek) who met here in Greece a girl from your country who came here for vacations,he married her and now he lives at your country(rich girl)......... :D

[brwmogazos]

Originally posted by hipro5
SO.............I think that you have > RAM<>Northbridge problems........Try to bench at 3:2 and see what happens......BTW On 3:2 try some other configs for the RAMS... ;)


i was gonna try 3:2 shortly to be honest just to see what happens :p

i havent tried that earlier cos 3:2 benching would suck :p

i lately replaced my P4C800E with another one which again i modded...i had the same issue before...

well ok then...time to check with 3/2 :D

[enzoR]

you should have told us you were runing 5/4!! :doh:

damn wish my ic7 would run 5/4 all the way to 300mhz :mad:

[enzoR]

Originally posted by hipro5
OFF topic.........Hey enzoR , I just show you're from Netherlands........I have a friend of mine(Greek) who met here in Greece a girl from your country who came here for vacations,he married her and now he lives at your country(rich girl)......... :D

cool :toast:

i'm not dutch though.... well OK i'm half dutch lol :D ;)

btw how high were you able to run in 5/4 with tight timings?

damn y is everyone still awake!!? :confused:

[OPPAINTER]

Where is the V-agp mod for the P4C ?
I have a mobo I'm about to hook up but I'm only stable up to about 272 1:1 when running 3D. After that I have to drop to a divider.
The mem can do 298MHz.

OPP

[OC_Newbee]

I'm not sure if this help since I've never have the chance to play with my P4C800E-Deluxe. I got this of the manual and hope this will work for you.

[OC_Newbee]

Here's the setting you might want to disable.
Good Luck and hope this will help out.

[hipro5]

Originally posted by enzoR
damn wish my ic7 would run 5/4 all the way to 300mhz :mad:

I have 3 IC7(-G) mobos.........My "good" one can do 1:1 > 270MHz(BH-6) , 5/4 > 298MHz and 3:2 >400MHz(haven't tested for more yet)....... :D

My "home's" one can do 1:1 > 263MHz(BH-6) , 5:4 > 310MHz and 3:2 >391MHz...........and my 3rd one can do 1:1 > 269MHz (BH-6) , 5:4 > 304MHz and 3:2 > (haven't tested yet - back-up mobo)...... :D

ALL three of them have the EXCACT same Norhthbridge chip (Lxxx)........I didn't find any time though to see what's wrong with 5:4 on those ABITs(and ASUS's too).......

[OPPAINTER]

Originally posted by OPPAINTER
Where is the V-agp mod for the P4C ?
I have a mobo I'm about to hook up but I'm only stable up to about 272 1:1 when running 3D. After that I have to drop to a divider.
The mem can do 298MHz.

OPP

Got it:D
http://www.malvescorner.com/p4c800.htm

OPP

[enzoR]

hmmn i guess i need more V's :D

[saaya]

thx! :toast:

[hipro5]

Originally posted by OPPAINTER
Where is the V-agp mod for the P4C ?
I have a mobo I'm about to hook up but I'm only stable up to about 272 1:1 when running 3D. After that I have to drop to a divider.
The mem can do 298MHz.

OPP

Put a 50KOhms trimmer from pin 6 of the LM324 to ground......... ;)

[hipro5]

Originally posted by OPPAINTER
Got it:D
http://www.malvescorner.com/p4c800.htm

OPP

Pin 11 of the LM324 is NOT the ground.......It is the -12Volts....... :D ;)

[brwmogazos]

ok thanks for the tips...

OC... i will be disabling that option to try and see what happens...yes i have seen this option in the bios... :)

tried 3/2

i was able to do only one super pi bench at 4301mhz :p
thats with my 2.8 @ 1.888V( just upped it to a random Vcore value :p)

anyways...so i was able to bench just one fsb higher than before

then it freaked out...maybe the CPU is being pushed a lot....its only a 2.8 :p

i sadly watched my super pi drop to 34secs :p

Again the board has had it by the looks of things...got errors in super pie at 4328 iirc...

then it refused to boot by my scsi boot drive...i had to shut down....i know my adaptec 29160 controller cant take high fsbs either so..i guess i have to settle with what i got or get a 3.4 and forget about 300fsb since i am already running 293fsb with my 2.8 prime stable etc 24/7

So hipro youre telling me that arround 300fsb it seems very difficult to run and bench with 5/4?

[OPPAINTER]

Originally posted by hipro5
Put a 50KOhms trimmer from pin 6 of the LM324 to ground......... ;)

Son of Beach. I just cut a 500K VR off of another mod to use it this agp mod. Then I put the 50K VR on the other mod. Urrr

OPP

[brwmogazos]

Oh another thing i noticed tonight...

my 3700EB runs 1:1 242fsb @ 2.5 2 2 5 8 turbo, enbaled, infinite, 64msec memtest test 5 loops error free...

i tried that with 5/4 at even 230 fsb with the same settings and only after 8 passes....errors!

i had to change my settings to 2.5 2 2 5 4 turbo, enabled, auto ,auto that seemed after 12 passes to give no errors...

is that weird or not? 12+mhz lower ram speed and i get errors from 1:1 to 5/4?

[hipro5]

Originally posted by OPPAINTER
Son of Beach. I just cut a 500K VR off of another mod to use it this agp mod. Then I put the 50K VR on the other mod. Urrr

OPP

:D

[hipro5]

Originally posted by brwmogazos
Oh another thing i noticed tonight...

my 3700EB runs 1:1 242fsb @ 2.5 2 2 5 8 turbo, enbaled, infinite, 64msec memtest test 5 loops error free...

i tried that with 5/4 at even 230 fsb with the same settings and only after 8 passes....errors!

i had to change my settings to 2.5 2 2 5 4 turbo, enabled, auto ,auto that seemed after 12 passes to give no errors...

is that weird or not? 12+mhz lower ram speed and i get errors from 1:1 to 5/4?

NO..........That's a "fact" ..... On 5:4 Rams are pushed more than 1:1 and at 3:2 even more....... ;)

[brwmogazos]

Originally posted by hipro5
NO..........That's a "fact" ..... On 5:4 Rams are pushed more than 1:1 and at 3:2 even more....... ;)

never expected to be such a high difference...i mean 12mhz+(cos i had no time to find the max with the settings i was using before)

i just find it too much:D

[OPPAINTER]

Originally posted by hipro5
:D

I'll use the 200K and start it at 50K :D

I'm in no mood to change things around again. :D

OPP

[OPPAINTER]

Alright, the v-agp mod is done.
I have a P4 3.2 EE here and some -80C cooling.
I think along with this new, untested X800XT card, I should be able to move up the 3D charts tonight:D

See if we can do 3D at 16x 282MHz 1:1 now:D

OPP

[brwmogazos]

seems like youre on a mission OPP :D

[Iridium192_217]

have you tried clockgen?

[eva2000]

Originally posted by OPPAINTER
Alright, the v-agp mod is done.
I have a P4 3.2 EE here and some -80C cooling.
I think along with this new, untested X800XT card, I should be able to move up the 3D charts tonight:D

See if we can do 3D at 16x 282MHz 1:1 now:D

OPP ooooooooooh ... go OPP!

[novagamer]

Originally posted by OPPAINTER
Alright, the v-agp mod is done.
I have a P4 3.2 EE here and some -80C cooling.
I think along with this new, untested X800XT card, I should be able to move up the 3D charts tonight:D

See if we can do 3D at 16x 282MHz 1:1 now:D

OPP

Good luck OPP!:)

[novagamer]

Originally posted by hipro5
Pin 11 of the LM324 is NOT the ground.......It is the -12Volts....... :D ;)

You had me really confused, funny guy :p: Pin 11 is ground I just checked the sheets! Was going to do some whacky wiring when I do this mod :D

[pik-ard v1.1]

Originally posted by OPPAINTER
...I should be able to move up the 3D charts tonight:D

OPP

3dmark2k1, or 3dmark2k3 charts?

either way, good luck :)

[hipro5]

Originally posted by novagamer
You had me really confused, funny guy :p: Pin 11 is ground I just checked the sheets! Was going to do some whacky wiring when I do this mod :D

Why don't you just mesure it and leave the sheets...??? ;)

[ultron5]

Originally posted by hipro5
NO..........That's a "fact" ..... On 5:4 Rams are pushed more than 1:1 and at 3:2 even more....... ;)

mmmmh, I dont feel that on a P4C800-E and on a P4P800.

By Example this Rams did 259MHz MAX stable in 5:4 and in 1:1 at the same Voltage.

http://mitglied.lycos.de/coolinglimit/Hardwarepics/SL6Z3/SuperPI_324.png

Because the Rams often go as high as in 1:1 in 5:4 mode, lots of people say 1:1 is better. I compared this 2.4C @ 3900 / 325 / 260 vs a P4 3.0C @ 3900 / 260 / 260.
The 3.0C setup performed nearly as fast as the 2.4C, in some cases the 3.0C were faster. But the difference is veery small between 1:1 and 5:4 on the P4C800-E.

Had anyone find out why the Abit cant do >300 in 5:4 yet?

[hipro5]

Originally posted by ultron5
mmmmh, I dont feel that on a P4C800-E and on a P4P800.

By Example this Rams did 259MHz MAX stable in 5:4 and in 1:1 at the same Voltage.


Because the Rams often go as high as in 1:1 in 5:4 mode, lots of people say 1:1 is better. I compared this 2.4C @ 3900 / 325 / 260 vs a P4 3.0C @ 3900 / 260 / 260.
The 3.0C setup performed nearly as fast as the 2.4C, in some cases the 3.0C were faster. But the difference is veery small between 1:1 and 5:4 on the P4C800-E.

Had anyone find out why the Abit cant do >300 in 5:4 yet?

No but I can show you what ABIT does with a P4 3.2GHz ES at 3786MHz and 252MHz fsb - 100MHz LOWER than your Super-Pi and 10MHz LOWER the RAMS - multi (ES) x 15 and 1:1 CPU:RAM at full aggressive... :) ;)

[crotale]

Originally posted by hipro5
NO..........That's a "fact" ..... On 5:4 Rams are pushed more than 1:1 and at 3:2 even more....... ;)

True.
My RAM will do 240MHz, 1:1, 2-5-2-2, 3.2vdimm
but only 234MHz (293MHz FSB), 5:4, 2-5-2-2, 3.2vdimm.

(on vdimm modded IC7-G)

[ultron5]

Originally posted by hipro5
No but I can show you what ABIT does with a P4 3.2GHz ES at 3786MHz and 252MHz fsb - 100MHz LOWER than your Super-Pi and 10MHz LOWER the RAMS - multi (ES) x 15 and 1:1 CPU:RAM at full aggressive... :) ;)

Excellent!! what OS you're using for that run? I used XP.

btw Could do the 35s at min 380xMHz too, in 5:4 and Win2k3! (318 FSB) ;)

The 35s run was on my Main-Work-Rig, unoptimized etc, I'm sure it could easily do 34s with some tweaking!

The Abit IS ALWAYS faster clock to clock ... but I'm still thinking that there is just no difference between 5:4 and 1:1 on this Asus Mobos.

[hipro5]

Originally posted by ultron5
Excellent!! what OS you're using for that run? I used XP.

btw Could do the 35s at min 380xMHz too, in 5:4 and Win2k3! (318 FSB) ;)

The 35s run was on my Main-Work-Rig, unoptimized etc, I'm sure it could easily do 34s with some tweaking!

The Abit IS ALWAYS faster clock to clock ... but I'm still thinking that there is just no difference between 5:4 and 1:1 on this Asus Mobos.

It was done with Win XP SP1.........

I've seen many ASUS that can't do the same on 1:1 and 5:4...... ;)

[skate2snow]

Hey, Is that problem on AI7 too? I'm talking about 300FSB 5:4... That was the perfect setting for my 2.4C, OCZ EB's:(. That makes me very sad. I hope I can do 310FSB 5:4:(....

The AI7 is a super board. I will say like Eva. Its a Canterwood killer....

[REDKEN]

Hi guys!

I need a little help with the Vagp mod. I can't get it to work. The thing is that I hadn't found this thread before I did the mod. So, I used a 200kohm trimmer (186kohm actual) and soldered to legs 6 and 11. That gave me 2.48v on the agp.
Then I tried a 160k resistor with a 50k trimmer (to get rid of the 5% tolerance difference). That gave me 2.48v also.
I have unsoldered and re-soldered this, more than I can remember and checked that the solder jobs have been good.

So, after reading this thread, it leaves me with two questions:

1- If leg 11 is not the ground, which one is it?
2- Given that my trimmer is set to 186k actual and it gives me 2.48v, wouldn't 50k give me a lot more?

:confused: :confused: :confused:

Thanks.

[ROACH]

What video card are you using?

I have heard, seen and also exprienced cases where ATI cards no likey any thing above 300fsb. I had a 2.4 that could run all day at 300fsb 1:1 and 5:4 and run F@H but as soon has 301fsb BANG no go. I tried everything from clockgen to modded bios.