UnOfficial i955/i945 Overclock (Dual Core and/or Single Core) [Archive]

death metal

07-08-2005, 10:31 AM

Heya guys, not sure if there's a thread like this already, so if there is then just delete this thread.

Anyway, I have been meaning to get a i955-based mobo, but I decided against it and just waited for the dual core CPU to mature. As it is right now, these CPUs are hotter than Single Core, and so with my measly aircooling solution, I doubt I can ever go far.

But for those who have luck setting up this kind of rig, just post your OC results here, and if possible, temperature readings on air/water/phase change/others. Post mods done as well (with pics to guide us would-be i955/i945 users).

death metal

07-10-2005, 05:00 AM

Anyone has this set up? Tips? Pitfalls? Best motherboard? Best RAM? etc.?

althes

07-10-2005, 09:02 AM

I will be getting a board soon.

IluvIntel

07-10-2005, 09:20 AM

I got the Asus P5WD2 a couple of days ago, can't get best suicide shot yet till' Arctic Silver 5 paste settles in ( they recommend 200 hours of several on/off cycles).
However, something interesting about the PCIe frequency when O/C with a Sata HD. I'm using the WD 120Gb Sata II model and can O/C front side bus so far by 38-39% with "auto" setting in Bios for PCIe frequency. That's something I simply could not do on my older 925x Asus mobo. Whenever I go to lock the PCIe frequency it refuses to boot up. Maybe BIOS needs maturing, using v0422. ;)

death metal

07-10-2005, 06:14 PM

althes, any particular brand and model? and maybe, can you post reason why? (i.e. price, features, ocability, etc)

ILuvinte, Good to hear about the PCIe lock. Not so sure about my Abit i925XE AA8XE. My experience is that it works fine even when it's set to auto, but hey, I only max it to 270+ on air =) so I really can't say much haha.

What is your cooler on your CPU, your sig doesn't show it yet :)....any screenshot stable OC so far? (not max, suicide shot)

IluvIntel

07-11-2005, 01:33 AM

ILuvinte, Good to hear about the PCIe lock. Not so sure about my Abit i925XE AA8XE. My experience is that it works fine even when it's set to auto, but hey, I only max it to 270+ on air =) so I really can't say much haha.

What is your cooler on your CPU, your sig doesn't show it yet :)....any screenshot stable OC so far? (not max, suicide shot)

I use the Thermaltake Aquarius III External watercooler for Cpu, it does'nt have the biggest waterblock nor thickest hoses - so I supplement it with a bit of air cooing to the waterblock and over the rest of the MoBo. Its really just an average type of system... but hey I got this before turning into a serous O/Cer... ;)
The Asus passive chipset cooling system is not as efficient as the Abit system from the fatality 925xe mobo, and removing air cooling from the cpu with a water cooling system means no breeze blows over the rest of the important chipsets, so additonal fan somewhere blowing of the mobo is neccessary for stable overclocks without outrageous temps. :) thats why I put 12cm fan on side grill of Thermaltake Shark Case blowing towards mobo's cpu area.

I'll upload a screenie tonight of CPU on full load.

IluvIntel

07-11-2005, 03:37 AM

Here we are:

Sheik

07-11-2005, 05:05 AM

I had an Abit AW8-MAX Intel 955, but the HSF I was using didnt fit properly so 70'C under load but my 3.0 GHz P4 did 3.6 GHz at stock VCore. The AL8 Intel 945 didnt do anything over 3.3 GHz though. Read at Techreport the boards that the chips that doent make the Intel 955 grade (better memory controller) become Intel 945 instead. If you are going to OC Intel 955 is the only choice IMO.

death metal

07-11-2005, 05:22 AM

IluvIntel, wow...looking good. The RAM timing is a bit on the slow side though, but 281FSB is nifty on AQ3 =)...

Sheik, woah, that's a very poor OC on the i945...are sure you did every tweak? Or is it that the mobo is just not that mature yet?

eshbach

07-11-2005, 05:23 AM

Asus P5WD2, unmodded.
Intel 830.

-116C PC ICE Cascade

http://valid.x86-secret.com/show_oc?id=25730

http://img127.imageshack.us/img127/6506/54004hb.jpg

Sheik

07-11-2005, 05:43 AM

Sheik, woah, that's a very poor OC on the i945...are sure you did every tweak? Or is it that the mobo is just not that mature yet?

Well as far as I'm concerned you shouldnt have to tweak anything to get a basic overclock.

The memory was Samsung DDR533 at 4-4-4 timings and all I did was up the FSB.

On the Abit AW8 955 I just kept upping the FSB until I got 240 Mhz. CPU at 3.6 GHz Memory at 640 Mhz. Without increasing any voltages. I'm sure this board still had a lot in it but without better cooling I have no idea how far it would have gone :rolleyes: I'm guessing pretty far though.

On the Abit AL8 945 I tried the same and at 222 MHz I got a blue screen.

:slapass:

death metal

07-11-2005, 05:44 AM

Oh my, sleek OC eshbach! Is the -116c holding at benching with your max stable OC? Is that screenie a suicide shot? Nice OC!!!

eshbach

07-11-2005, 06:55 AM

Oh my, sleek OC eshbach! Is the -116c holding at benching with your max stable OC? Is that screenie a suicide shot? Nice OC!!!

it's about -92C holding. still working on max benchable.

IluvIntel

07-11-2005, 09:19 AM

IluvIntel, wow...looking good. The RAM timing is a bit on the slow side though, but 281FSB is nifty on AQ3 =)...

Yeah, I suppose they are for that middle-of-the road DDR2 bandwidth, but I'm leaving at those settings and gently increasing the O/C each day with full load and net surfing too. The full load consists of 2 x distributed computing projects - 1 x BONIC climateprediction.net & 1 x folding@home.

I went up to 10% O/C with full cpu load for like an hour and then while opening 2 x I.E. windows, I get windows telling me folding@home has too close... :( ... maybe not enough juice to cpu... who knows!
Anyway that's my acid test for stabiltiy, run it at full load all day and try and net surf at the same time without any crashes or lockups... then you know she's real good... :D

IluvIntel

07-12-2005, 09:57 AM

OK, found out something interesting about the ability of the P5WD2 mobo to lock the HD when O/C.
It works to a slightly different value compared to the older 925X mobo from Asus. No suprise there. :p: I just did'nt have the patience to go through about 10 reboots to figure it for myself. :D
If I use a 2.4 divider I can set what PCIe frequency needs to be to lock... in my case a Sata II HD. At 284Mhz FSB it can be locked at 119 value, and everything is running fine with CPU at full load for sustained periods of use. Now hopefully no more files getting corrupted - :toast:

death metal

07-13-2005, 06:14 PM

If I use a 2.4 divider I can set what PCIe frequency needs to be to lock...

Heya, what is a 2.4 divider? Hehe, sorry for q, didn't know what that means =)

IluvIntel

07-17-2005, 07:47 AM

Heya, what is a 2.4 divider? Hehe, sorry for q, didn't know what that means =)

Sorry, death metal - I should'nt have been so ambiguous.

What I mean't was 2.4 approximately is the multiplier to figure out what is the PCIe value if you need to lock the HD when booting with O/C.

eg: 288mhz FSB divided by 2.4 = 120

But get IE reporting at this FSB speed it has a problem and has to close... :mad:

I'll drop it back 1mhz and it stops reporting errors... :cool:

120 is the value I entered for windows to boot with SATA HD, if I go one more unit higher, the bios reports can't find HD to boot from.. . :( I'm pretty sure there is a tolerance value their like maybe 10% +/- like on the previous generation 9xx chipset, but not 100% sure. I don't have the patience to find out :p:

boshuter

07-19-2005, 04:45 AM

This is the easiest board to oc that I've ever owned. I don't have the "cold bug", it boots at 330fsb like it's running default.... a great board :) I just set the PCIe to 101 and forget about it. Still have a few settings in bios that I haven't figured out yet though. I'm still running the 422 bios. This is with some crap water cooling I threw together with some old parts I had laying around, cpu runs 35c loaded.

http://i8.photobucket.com/albums/a5/boshuter/lga%20660/32mbpi4.jpg

Salkcin

07-19-2005, 07:43 AM

Platform
CPU: Intel Pentium 4 630 (3GHz)
Motherboard: Asus P5WD2 Premium (bios: beta 0408)
Memory: 2x1GB Kingston Value DDR2-533 (CAS4-4-4-12/1,8v) (200$ 2GB memory kit :D)
PSU: Coolermaster RealPower RS-450-ACLY (450 watt)

Watercooling
CPU / Watercool Heatkiller rev2.0
Videocard / Innovatek Graph-O-Matic rev2
MOSFETs / MB Heattrap RegCooler "Asus P5A"
Pump / Eheim 1046 (300l/t)
Watercooler / Black Ice Xtreme II (2x120mm/1650RPM)
Watercooler / Watercool HTF3 dual 80 (2x80mm/2000RPM)

Overclocking
CPU speed: 4200MHz (15x280MHz FSB)
Memory speed: 373MHz (3:4), CAS4-4-4-12
Performance mode: Turbo
HyperPath3: Enabled
PCI-E: 100MHz
PCI: 33MHz

Vcore: 1,375v
Vdimm: 2,15v
FSB Termination: 1,3v
MCH voltage: 1,5v
ICH voltage: Auto

CPU temp: 54 celcius full load

Pictures
- SuperPi 32M (just ran to prove stability... not for a good time): http://users.cybercity.dk/~dsl30381/32m.jpg
- Memtest86+ 1.55: http://users.cybercity.dk/~dsl30381/kingstonddr2value.jpg
- System information: http://users.cybercity.dk/~dsl30381/p4630.jpg
- CPU-Z Valid: http://valid.x86-secret.com/show_oc?id=27779

- System picture at desktop: http://users.cybercity.dk/~dsl30381/desktopsetup.jpg
- System picture modded in the case: http://users.cybercity.dk/~dsl30381/enermax01.JPG

Hope it's not to detailed :rolleyes: ....it's almost spam :D

IluvIntel

07-20-2005, 12:33 AM

Salkcin

07-20-2005, 09:23 AM

Salkcin, thats not spam - it gives others the opportunity to compare and see, thats what forums are for... :)

I just got a new 630 cpu and are waiting on delivery of Heatpipe/Aircooler for Cpu - no more crappy off-the-shelf WC's for me.

What kind of HD are you launching windows from for that O/C?

Thanks. ;)

A Hitachi Desktar T7K250 (SATA-II). I'm sure it locks the PCI-Express frequency for real at the 955X. Intel 915/925 is crap for overclocking - to many "workarounds" needed to overclock. 955X is just sweet in my experience... heard some succesfull and some unsuccesfull stories with 945 so I don't know if they have the ablility to lock the PCI-E as well and if they have the 10% FSB overclock limitation....
A guy I spoke to at a other forum wich have contact to Asus says they wrote to him that 955X has no overclock limitation at 10% overclock. Seems Intel removed it :D

IluvIntel

07-21-2005, 08:53 AM

A Hitachi Desktar T7K250 (SATA-II). I'm sure it locks the PCI-Express frequency for real at the 955X. Intel 915/925 is crap for overclocking - to many "workarounds" needed to overclock. 955X is just sweet in my experience... heard some succesfull and some unsuccesfull stories with 945 so I don't know if they have the ablility to lock the PCI-E as well and if they have the 10% FSB overclock limitation....
A guy I spoke to at a other forum wich have contact to Asus says they wrote to him that 955X has no overclock limitation at 10% overclock. Seems Intel removed it :D

I agree with you wholeheartedly :) about the 925x - such a nuisance and intel promoted it as a "performance" chipset.... :banana:

I just installed the 630 "baby" cpu and the TT big typhoon cooler and though running it at stock settings - its a shock to see how cool it runs on idle and full load for over 1 hour. I mean its a shock compared to the older 560 I use to have. I'm using the WD sata II HD you can definately leave it on "auto" in PCIe value for longer compared to 925X mobo. :fact:

Anyway I'll check back later after experimenting with this new combination... :clap:

Salkcin

07-21-2005, 03:01 PM

I agree with you wholeheartedly :) about the 925x - such a nuisance and intel promoted it as a "performance" chipset.... :banana:

I just installed the 630 "baby" cpu and the TT big typhoon cooler and though running it at stock settings - its a shock to see how cool it runs on idle and full load for over 1 hour. I mean its a shock compared to the older 560 I use to have. I'm using the WD sata II HD you can definately leave it on "auto" in PCIe value for longer compared to 925X mobo. :fact:

Anyway I'll check back later after experimenting with this new combination... :clap:

Auto? :confused: - Lock it at 100MHz :D

IluvIntel

07-23-2005, 11:59 AM

Auto? :confused: - Lock it at 100MHz :D

Yes, Auto.

No problems with Windows booting and staying stable @ 27% O/C with default 15x multi. I lock the PCI bus, disable TM2 and would like to disable C1 control but bios only gives option of "Auto".
However, have just completed 24 hour stability test @ full 100% load and the 630 Cpu on this Mobo is a beauty with combined heatpipe and air cooling via TT big typhoon cooler. According to Asus utility, 33 C idle and 43 C full load, ambient - 18 C.
The only voltages I increased were the RAM, running 3:4 @ 633Mhz, 3-2-2-4 on 2.15v. Don't wanna take too many chances with RAM stability. I'm very happy with a 3.0 Ghz cpu running at 3.8Ghz with a cheap but effective cooler and practically most bios settings on "Auto". :)

Will post back soon with screenies ( when I get off 56K modem speeds...)

Going to reach for higher settings soon. :D

socrilles

07-23-2005, 10:27 PM

Do both or either of the 945 and 955 chipsets support the 1066 fsb P4 EE's ?, and has anybody tried forcing a 1066 fsb on the dual core processors?

IluvIntel

07-24-2005, 08:09 AM

Do both or either of the 945 and 955 chipsets support the 1066 fsb P4 EE's ?, and has anybody tried forcing a 1066 fsb on the dual core processors?

They most certainly do.

Thats the official word from Intel, check out their website and chipsets subheading.

Also this thread from my home O/C forum spells it out from one user with an 830 dualcore cpu (3.0ghz)

http://forums.overclockers.com.au/showthread.php?t=385482&page=1&pp=15

But to view it, you'll have to become a member. ;)

Sentential

07-24-2005, 09:04 AM

IluvIntel I want to thank you for your advice. I belive that my mobo wasnt proprely locking the SATA PCI bus. For some reason I could never break 300 without it doing weird ass freezing and lockups.

I thought possibly voltage was the issue but ruled that out. Then I figured it was heat. I gave what you said a try (manually set the PCI-E to 101) and it a has appeared to solved my issues.

Just for those viewing if you are getting weird random BSODs be sure to manually set the PCI-E frequency to 101mhz and it should help a great deal.

IluvIntel

07-25-2005, 05:28 AM

No problem Sentential,

I'm not sure which is causing this great O/C I have going here - the mobo or the cpu?

I have ALL voltages on "auto" in bios and thought keeping ram at 1:1 would help stability when multitasking a lot. I could try other ratios but have no practical use for the bandwidth on a daily basis yet.

Here is a screenie and remember this is with cheap A$65 cpu combined heatpipe/air cooler and extra 12cm fan bolted to side grill of Thermaltake Shark case. I am using AC silver no. 5 thermal paste.
Having a 920mb O/C I reckon is very good value so far, considering the equipment I'm using for cooling and haven't even begun to manually adjust voltages yet ! :D

-GobliN-

07-25-2005, 06:32 AM

I think I have the same porblem with you when I raise my fsb more than 260
my computer boots but doesnt load the windows :(
it says boot disc failure How did you solve this problem
maybe I can try it with PCI Sata controllers

vanovich

07-25-2005, 06:40 AM

# 18 This is the easiest board to oc that I've ever owned. I don't have the "cold bug", it boots at 330fsb like it's running default.... a great board :) I just set the PCIe to 101 and forget about it. Still have a few settings in bios that I haven't figured out yet though. I'm still running the 422 bios. This is with some crap water cooling I threw together with some old parts I had laying around, cpu runs 35c loaded.
nice ram you have there , what ram are they ? some tight timmings . are they pc 5400 ?

IluvIntel

07-26-2005, 09:29 AM

@ vanovich

Yeah, your right, very easy board to O/C on.
I can't believe that I can get a 1Gb O/C with "auto" volts in bios for everything !
Could be the 630 Cpu or the MoBo, not sure.

I've just completed all day 100% cpu full load and she's sitting sweet as a pot of honey ! :toast:

Are going to crank it more, like to get to 4.1 or 4.2 on Air with my A$65 cpu cooler... :D

Changed divider ratios, now running at 4:5 with 672mhz ram and tight as possible timings that mobo will allow.

Only hitch, that as far as I know I don't like is the fact that I can't unlock the multiplier in the bios. The option to do it is just not there and are using 0422 bios, so have to work with default 15 x mulit. :(

But apart from that... Man, this is fun for an A$325 cpu and $A390 mobo !!! :p:

BigStan

07-26-2005, 11:47 AM

IluvIntel - I was under the inpression you could set "Speedstep Tecnhonlgy" setting in the BIO to "minimum" and it would force a 14 multi on.

IluvIntel

07-27-2005, 01:14 AM

death metal

07-30-2005, 10:10 AM

I;ve been reading about high temp reading for the chipset when using dual core. Can anyone confirm this? On non-EE and EE dual core?

BigStan

07-30-2005, 10:35 AM

Thanks Big Stan for the tip, but when I go into bios menu and enter "Intel Speedstep Technology" the only option available is "automatic"... :( nothings else to choose from.
Same with "Enhanced C1 control".

But so far none of the above seem to be interfering with the O/C. :)

Are you on the 0509 BIOS? That's the one I have. You are right. In the Users manual it only shows those Auto and Disable as options. But the BIOS I have gives a 3 "Minimum" option. Also be sure you have disabled CPU Thermal Control, Enhanced C1 Control, Execute Diable Function.

BigStan

07-30-2005, 10:38 AM

I;ve been reading about high temp reading for the chipset when using dual core. Can anyone confirm this? On non-EE and EE dual core?
I'll try to help you out. What should I use to read those temps? The monitor that comes with the mobo shows the mobo temp to sta at around 28c. I think it doesn't work.

death metal

07-31-2005, 04:17 AM

If you have compunurse or digidoc or aerogate 2, any temp probe will do actually to get that NB temp =)....can you try running p95 for at least 5mins and post the temps? it doesn't matter if it's OC or stock =)....just want to know how P-D puts pressure on the chipsets...

IluvIntel

07-31-2005, 07:54 AM

Are you on the 0509 BIOS? That's the one I have. You are right. In the Users manual it only shows those Auto and Disable as options. But the BIOS I have gives a 3 "Minimum" option. Also be sure you have disabled CPU Thermal Control, Enhanced C1 Control, Execute Diable Function.

Thanks BigStan,

Nice to see you contributing to the OCAU forums here in Oz. :)
(I'm user 'RodneyJM', always checking in on the best part of the forum in the Intel section :p: )

No, I'm using the 0422 bios, only because I don't see any other later one on the Asus support website. Yes, I have disabled CPU thermal control.
"Enhanced C1 control" - the only option is "Auto", nothing else is there... :(

I haven't disabled "Execute Disable Function", I'm paranoid about evil creeping in from the net. ;)

BigStan

07-31-2005, 08:08 AM

aja

07-31-2005, 08:52 AM

But for those who have luck setting up this kind of rig, just post your OC results here, and if possible, temperature readings on air/water/phase change/others. Post mods done as well (with pics to guide us would-be i955/i945 users).

okay, this is kinda off topic, but follows from the quote /\ /\ /\

my specs are as in sig \/ \/ \/

load 62'C
idle between 33 and 40'C(room temps vary)
vcore 1.380 idle, 1.280-1.320 load
all on air, with one 80mm fan for caseflow....

IluvIntel

08-03-2005, 06:36 AM

OCAU is a great forum. there is lot's of good up to date info over there.

The 0509 BIOS came from the German Asus web site. I just checked a few minutes ago and that link was down. It is about 1mb in size. I might be able to host it or email it for you. Let me know if you want to try it. FWIW. I've been extensivly testing the 14 multi on my rig., I am seeing no difference in performance on any of the benchmarks using it. True it shows bigger fsb numbers for bragging rights, but my proc tops out at 4.125 both at the default 15 and at 14 multi. Run benchamrks and it is all pretty much within a few points of each other. If you have an ES or EE proc it might make a difference. But for the 530s, 630s, 830s, I am beginning to think it is a waste of time to worry about it.

All that aside, I think the 0509 BIOS is a very good one. Worth installing whether you are interested in the 14 multi or not.

OK, thanks Bigstan

I just installed Windows XP Pro-64bit and are experimenting with that for now on my new Raid 0 config with WD sata II (300mb/s) HD's. This operating system has only been out a few months now and only a handful of vendors have bothered to write drivers specifically for it. Lucky for me, they are the ones that count with my hardware... ;)

I can honestly say that the sound quality in DVD-video playback using Nero software has been substantially improved. No doubt creative wrote drivers for my SB Audigy 2 plat. pro. hardware in 64bit language, so that helped too.
But I'm not joking, the sound is very good and clearer than on the old XP 32 bit system.

Having more 64bit software running now, gives me a chance to really test how good this motherboard is, however all things considered, it is still early days for vendors to come to the party in 64bit world on Intel based rigs. I have found that my system does not like benching over 4.1Gb now and reboots during tests. I thinks its software related - driver based, I could bench at higher clock speeds on the old 32bit XP system, but not now. ;)

All in all , I'm not worried though, cause the applications I run on a daily basis are still going strong and even improved, especially in multimedia situations. :)

Dillusion

08-17-2005, 11:15 PM

Has anyone here tired messing in-depth with the 945P? I have a P5LD2 and im having trouble passing 4.2ghz with <1.425 vcore on a 570J ES.

BigStan

08-18-2005, 06:22 AM

That Vcore looks a little low for trying to go over 4.2 ~ What multi are you using 14 or 18?

Dillusion

08-18-2005, 11:13 AM

Well heres what ive been messing with so far:

vCore: Auto
FSB: 280
Multi: 15

This reboots in 3D apps...

Ive tried these also to no avail:

vCore: 1.4125
FSB: 275
Multi: 16

vCore: 1.4250
FSB: 250
Multi: 18 (Also tried 17x multi)
THIS causes BIOS curruption and i need the ASUS driver CD to replace it upon bootup.

This is the only working group:

vCore: 1.4000
FSB: 266
Multi: 16

Ive also tried raising the MCH and ICh voltage +.1 but that doesnt help. Disabling Hyperpath 3 helps a little bit, but still cant get over 4.2ghz without more than 1.43 vcore.

BigStan

08-18-2005, 11:22 AM

BigStan

08-18-2005, 11:25 AM

But for those who have luck setting up this kind of rig, just post your OC results here, and if possible, temperature readings on air/water/phase change/others. Post mods done as well (with pics to guide us would-be i955/i945 users).

Here is what I have so far:

http://www.xtremesystems.org/forums/showthread.php?t=70531

Dillusion

08-18-2005, 11:25 AM

Yes i was trying for 300x14 but it wouldnt work either....

At 1.43vcore my loop gets very hot, CPU idles at 55-60c even on water

BigStan

08-18-2005, 11:28 AM

At 1.43vcore my loop gets very hot, CPU idles at 55-60c even on water
There is something not quite right here. My WC is average at best. I get 40~42c idle and 58~59c running 2xPrime at 280fsb ~ 1.575v.

Dillusion

08-18-2005, 11:33 AM

There is something not quite right here. My WC is average at best. I get 40~42c idle and 58~59c running 2xPrime at 280fsb ~ 1.575v.

Theres an X800XL on the same loop, only one 120MM rad, BI Pro...

BigStan

08-18-2005, 11:56 AM

Yup, that's why. You don't have enough rad to support both a vid card and a CPU. A single 120mm rad is usually only good enough for just the cpu.

Dillusion

08-18-2005, 01:25 PM

Hehe, well im leaving this 570J ES in favor of a Retail PD 830. I see youve got one in your sig- Think itll put out less heat than the 570?

BigStan

08-18-2005, 01:30 PM

No, I think it puts out more heat. It has two cores creating heat instead of one.

Martijn

08-18-2005, 01:30 PM

I've got an Asus P5LD1-VM, with 945g chipset. I'm running my 820 at 3,08Ghz now (14/220) @ 1,225 volt. I'm still using the crappy boxed cooler, might change to a better (and quieter) solution soon. Temperatures are at load around 55 degrees centigrade.

Dillusion

08-18-2005, 01:45 PM

No, I think it puts out more heat. It has two cores creating heat instead of one.

But people are getting good OC's on stock vcore. If i can keep the vcore down with a nice OC, then i wont have to worry about heat as much.

PLUS im getting a prototype STASIS thermal NB cooler for my mobo to test out, we'll see how that goes aswell...

BigStan

08-18-2005, 02:36 PM

But people are getting good OC's on stock vcore. If i can keep the vcore down with a nice OC, then i wont have to worry about heat as much.
Yes, but you have the added heat of the Vid card influencing the cooling of the CPU. When you see high OCs for 830, study how they are cooling their cpu. They either have excellent air - which just cools the cpu, or most of them just have a water loop for just the cpu. The added heat from the vid card makes a huge difference. You don't have to discard the WC equipment you have. Just add a 2nd loop with it's own rad and pump for the vid card.

noosphere

08-19-2005, 04:14 AM

There is something not quite right here. My WC is average at best. I get 40~42c idle and 58~59c running 2xPrime at 280fsb ~ 1.575v.

Hi!
You need 1.575Vcore to reach at 4200 (280*15) Stange... I only need 1.475V to reach at 4200speed!!! What could be?
Could i incrase the vcore at 1.575? I have watercooling with two EVO360 just for the cpu ;)
Regards

Luis Belo
Portugal

Martijn

08-19-2005, 06:05 AM

Does anyone know what the maximum (and safe) voltage is you can use for the 8xx series with the standard boxed cooler?

BigStan

08-19-2005, 07:50 AM

Hi!
You need 1.575Vcore to reach at 4200 (280*15) Stange... I only need 1.475V to reach at 4200speed!!! What could be?
Could i incrase the vcore at 1.575? I have watercooling with two EVO360 just for the cpu ;)
Every CPU is different. If you have excellent cooling, you should be able to raise you voltage. Mine never goes over 58~59c under load. So I feel comfortable with 1.575v. Thes PD are just 2-P4LGA's stuck together. The last P4-LGA I had i ran it at 1.65v and never had a problem. So I'm not sure voltage by itself is the issue. I think heat is the issue. If you are going to throw voltage at it you need to be able to cool it.

IluvIntel

08-20-2005, 12:49 AM

I only need 1.475V to reach at 4200speed!!!

Your doing that on a 3Ghz dual core, I can do that on a single core 3Ghz too !
However once I go over 4.22mhz, had to increase Vcore to maintain stability while benching with Futuremark series. :)

IluvIntel

08-24-2005, 03:57 AM

Using "Auto" Vcore prolly won't work. Most of the OCs I've seen getting up to the 4.2 range have needed 1.5~1.575v to be stable. You need good CPU cooling to do that. So watch your temps if you are going to try those higher voltages. If your CPU cooling can handle the 1.5v, it should get you to 280x15 or 300x14. Personally, I'd go for 300x14.

BigStan, which chipset mobo is that on? 945 or 955?
I was thinking of getting a 945 board for my second PC, but want to know how far O/Cer friendly they are. I know that the 955 boards have 4 phase CPU power circuitry and that helps a great deal with O/Cing if you want good stability. Don't know if 945 mobos have the same system... I think they very well could, after all they are both suppose to support dual core cpu's and the power requirements that entails. So, a single core cpu on these boards, depending on the stepping of it - should be a good O/C IMHO.

BigStan

08-24-2005, 07:56 AM

It is with the rig in my sig. It's the 955 chipset. Donno much about the 945 chipset. The few reviews I read said it wasn't quite as good of an OCer then the 955. But that could have been because of a lot of -non-mobo-related issues. But the differences seem minor.

Dillusion

08-24-2005, 09:50 AM

Ok I got my 830 in yesterday. This is eshbach's WR chip he got to 5.5ghz on his cascade. Problem is, it wont run 3D Apps even at stock. Is it possible the chip it damaged from the overclocking? It works fine in 2D mode....or am i doing something wrong? I have the latest 0603 BIOS for my P5LD2 and the bios settings are at default. I have an enermax 480w Coolergiant PSU which is an excellent PSU.

I dont need a fresh install of windows, do I? Just from going to single to dual core on the same windows install wouldnt cause problems, or would it?

As soon as a 3D app loads, about 10-15 seconds later the comp will just shut down. No blue screen, just power off. This also happens when i raise the vcore above 1.45v the comp will just shut itselff off when it loads windows.

Im using 'Auto' vcore right now, and the problem up there ^ was experienced with vcore on 'Auto' aswell as 1.45+....

Ideas?

aja

08-24-2005, 10:16 AM

Does anyone know what the maximum (and safe) voltage is you can use for the 8xx series with the standard boxed cooler?

ive run my 820 up to about 1.5, but 24/7 at 1.47V seems fine, well so far. given i do have a zalman 7700cu, and even that is struggling at 266fsb...

really try to keep your vcore down, each time you step it up, its temps go way higher.... id rather stick with the stock cooling or go water.....

at the moment, its at 14x261, 1.465V, 46'C idle 64'C load....stable solid :)
it isnt stable at 266 fsb.....crashes after a few hours of simultaneous pi, occt and s&m......

i think you should rather buy the BEST psu you can and then think about coolng, my vcore jumps all over tthe place, creating major stability issues at high fsb's, even though temp's dont seem to be a problem :confused:

good luck :D

BigStan

08-24-2005, 10:26 AM

That sounds lke a weak PSU issue to me. I'm not saying Cooergiant is a bad PSU, it just sounds like it doesn't have enough power.

Dillusion

08-24-2005, 01:30 PM

That sounds lke a weak PSU issue to me. I'm not saying Cooergiant is a bad PSU, it just sounds like it doesn't have enough power.

I went to that PSU calculator website and it says even at 1.5vcore and 3.6ghz my chip is only using 156w and with all my other components, it 'recommends' a 420w psu.

Could it be a thermal issue? This chip is no water and NEVER exceeds 57c...Ideas?

Dillusion

08-25-2005, 06:05 PM

I cant overclock this 830 for crap. Even at 220mhz it will reboot in 3d mode.

What am i doing wrong :/

death metal

08-25-2005, 06:15 PM

Can you post your BIOS settings?

Dillusion

08-28-2005, 11:38 PM

Is anyone using Dual-Rail PSU's with the 945/955 boards? Could that be my problem? My current PSU is 12V1 18A and 12V2 18A, will a PSU with 30A possibly fix my problem?

Dillusion

08-28-2005, 11:39 PM

Can you post your BIOS settings?

Which settings? i set bios to default, PCI lock to 33 and PCi-E lock to 100 and i jsut opped the FSb to 220, no go.

boshuter

08-29-2005, 05:23 AM

I've got an 840 3.2es that hits a brick wall at 4.0ghz no matter what divider/fsb I use. It will do it on default volts and more vcore does not help. Looks like it's just a dud :( It seems it is a VERY early production ES.... I'm sending it back to be replaced with a newer stepping es.

V I P E R

08-29-2005, 06:53 AM

You don't need an ES. 640 are good overclockers. I have seen o4,6 on aircooling.

Duvie

08-29-2005, 08:37 AM

OK now lets go over to my DIVX tetsing thread and run some real benchmarks....cmon guys the superpi 1mb times are great and nice cpu_z screenies but I would like to guauge P-D performance when oc'd and cannot get any takers.....

boshuter

08-29-2005, 02:50 PM

You don't need an ES. 640 are good overclockers. I have seen o4,6 on aircooling.

I know I don't NEED an es...... it's just that they don't cost anything ;) And it's an 840, not a 640.

vanovich

09-05-2005, 06:45 PM

Which settings? i set bios to default, PCI lock to 33 and PCi-E lock to 100 and i jsut opped the FSb to 220, no go.
#69 are you sure your mb supports duel core? it seems like your cpu gets to hot . check the kontakt from your cpu to whatever you are cooling it with .disable cie and speedstep in the biose.pci-e is better on 101.reinstall your chipset driver and grafik card also. try these things and run 3dmark ,hope it helps .

vanovich

09-05-2005, 06:52 PM

# 69 what ram du you have? try giving them bit more volt .maybe less tight timmings ,just to make sure its not them stopping you .maybe its your mb? have you had any other cpu overclocked over 220 fsb?

V I P E R

09-06-2005, 01:01 AM

I know I don't NEED an es...... it's just that they don't cost anything ;) And it's an 840, not a 640.
That's another story ... I also like 0$ chips :).
I know that your was 840, but most of the 6xx CPU's hit 4,5 ot water.

boshuter

09-06-2005, 05:20 AM

That's another story ... I also like 0$ chips :).
I know that your was 840, but most of the 6xx CPU's hit 4,5 ot water.

I agree, the 6xx's are great oc'ers..... I just want a decent oc'ing dual core for the pc mark benches. Each series has its strong points, my 571 does better in superpi than the 660, the 660 is better in 3dmark01 and AM3..... now I need a dual core for the pcmark benches.. ;)

V I P E R

09-06-2005, 10:49 AM

I agree, the 6xx's are great oc'ers..... I just want a decent oc'ing dual core for the pc mark benches. Each series has its strong points, my 571 does better in superpi than the 660, the 660 is better in 3dmark01 and AM3..... now I need a dual core for the pcmark benches.. ;)
You've got a lot of money man :). I hope that you will find some good D CPU.

TiTON

09-15-2005, 10:27 PM

Hey folks.. sorry if i'm bring a dead thread back to life, but this is some great reading :)

I can't wait to go back and OC in the morning.

i do have a couple of quick questions.

I'm runnin like a 5xx CPU (2.8Ghz). I can't stand intel's new numbering system.

I am trying to max out my memory, and wanted to know if i can boot my cpu at 533 NB Strap? The reason I want NBStrap at 533 is that I get 1:2 memory dividers. Right now I think my CPU is limiting the memory overclocking.

Oh.. just a side note. I'm using Abit AW8 955x chipset motherboard.

Seeing great results w/ the 6xx series CPU. I might have to pick one up. Is there any particualr items I should look for (speed / manf date / location)? Which would be the optimal 6xx to get for overclocking?

I look forward to hearing back from you nice folks :)

SAD

death metal

09-18-2005, 05:37 AM

I don't see any reason why you can't boot up at that bootstrap setting =)...

HempHog

09-18-2005, 09:59 AM

I maxed out my P5LD2 Deluxe (945) with my 820 at 275 FSB, no matter hot much more voltage I give my processor it will not go past, and my NB/SB & FSB Termination voltages are maxed out. Past 275 FSB everything gets out of sync, I don't think the NB can do anymore without a volt mod.

death metal

09-22-2005, 10:39 PM

I got a 955 asus, just waitng for P-D to arrive =)...

IluvIntel

09-26-2005, 01:24 AM

BigStan

09-26-2005, 05:36 AM

You would need to get a 660 to have the 14 multi unlocked.

death metal

09-28-2005, 06:52 PM

660 is a pricey ;)...

jaguarking11

11-07-2005, 06:28 PM

Sorry to bring this thing back up. I am wondering if any of you guys have sucsessfully moded a 945mobo to give the chipset more volts. I have a abit al8-v, its doing 290fsb and is stable. But I have a feeling my chipset is holding me back. The voltage settings including the ICH and pcix voltages dont do mutch to change voltage on the chipset (1.2vdefault) I was wondering if there is a guide to do a voltage mod on a 945 to maybe 1.4v chipset voltage so I can possibly hit 300fsb.

PS my system is in my sign

vanovich

11-09-2005, 04:36 PM

my 830d is running 320 fsb .so i cant complain.

death metal

11-12-2005, 05:33 PM

my 830d is running 320 fsb .so i cant complain.

rockin!

SpookyMoomin

11-12-2005, 06:22 PM

Hello everyone !

To get the Cpu unlocked to the 14x multi, what minimum 6xx cpu should I be running?
I have the 630 on P5WD2 mobo and the option to unlock the cpu is not available :( , using v0422 bios, this cpu runs at 15x multi.
I want to get the fsb up, but can't without overclocking the core too high.
I don't want to try the 0509 bios, because its not officially on Asus website.

Thanks in advance. :)

Im sure my 650 had multi unlocked from 14-17, i set it using the cpuid eist program in windows, & software OC it. The 630 has eist funcionality so it might be worth trying it at least to see if the 14x is available, unless eist just refers to voltage management, i forget now.

My bios had no option for manually setting cpu multi either. Hope the prog works for you, doesnt seem to be available at cpuid.org anymore..hmm.

vanovich

11-13-2005, 05:45 AM

rockin! Thanks
heres what it can with a 7800gtx :D
http://service.futuremark.com/compare?3dm05=1205924

antonio

05-18-2006, 02:06 AM

anyone in here been using gigabyte 945 based mobo...

I have encountered a problem where i cant reach 200 FSB or 4.1ghz....

when i reached 196 fsb...i just cant click to raise anymore of the fsb no matter using Gigavbyte's Easy Tune 5 or clockgen....

this is the link http://valid.x86-secret.com/show_oc?id=85818 of the results...

http://www.summitprint.com/images/view/3900-SPI-32.jpg

anyone knows why this has happend and is there anyway i can push the FSB more up....