overclocking problem with Prescott 2.8E

jp2000 · Post by **jp2000** » Mon Jun 28, 2004 5:55 pm

HI guys..
I'm using the P4 Prescott 2.8 E overclocking to 3.36, and i"m sure it 's possible to overclock more up to 3.6GHZ. Howver, everytime I try to overclock to that limit , the comptuter couldn't start. Does anybody know why? I"m guessing because Im using the stock HSF, so if I'm having better cooling , it will be possible.
My computer runs 45C ideal, and <60C with heavy load.

Another question: I bought the Fry's 3 year instant exchange for the precessor and MOBO combo because someone told me that after one year, you'll just take ur Mobo combo there and tell 'em it's not working..and get a new one...( if theyre out of that product, they will give you a better one)... has anyone had any experience with that? and if I overclock...does it void the warranty?

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My computer specs:
Cooler master ATC 6 fans
Asus P4C800 E deluxe
1G crossair memory
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thank you, every input is appreciated.

LVCapo · Post by **LVCapo** » Mon Jun 28, 2004 6:39 pm

first, O/Cing does void the warranty. Second, i don't really trust Fry's for much of anything, my personal experience there is dependent on which person helps me.
Third, I took my 2.8E up to 3.5 (250 FSB) no problem on an ASUS P4C800E-Deluxe. It basically for me came down to the voltages. You seem to have good temps, but don't use the stock HSF, go get a Thermalright SP-94. What is that corsair Mem? 3200,3500, 3700, 4000? With A/C I wouldn't take the vcore too much 1.50 on the ASUS (voltage spikes), max out your V-Dimm (2.85) On that ASUS board try these settings, after you update to BIOS 1016!!!
AI Overclock tuner - Manual (don't use the 5%,10%,20%, 30%
settings), alot of times these don't actually set correct values at the higher end and you won't be able to boot.
CPU External Freq FSB-250 (work your way up from where you are now to maintain stability. Raise it a few ticks, then reboot, check your temps and voltage, etc).
DRAM Freq- 400 is 1:1, 333 is 5:4 and 266 is 3:2. Try to keep it at 400, some people use 5:4 to find their max FSB (because of the voltage limitation at 2.85) but it isn't worth the tradeoff in performance.
AGP/PCI Freq- lock this at 66.66/33.33
CPU core voltage- careful with this on A/C, try not to go past 1.5, but here you need to take kiddie steps. Start out at the default v-core (1.375?) and see how far you can go with this, once you get reboots or instability, add a little voltage and continue, always watch your temps.
DDR reference voltage- leave it at 2.85
AGP voltage- leave it at 1.5

Set the board to Turbo, some people say to disable this, but i found you get an increase of 200-300 points under Sandra in testing. Try it both ways.

Memory- totally dependent on what you have. Disable "BY Speed"
try 3-4-4-8 then tighten the settings in steps. i have XMS Pro 4000 and my timinings are 2.5-3-3-5 at 240 FSB.
At the higher end, disable the performance acceleration mode, I found that it affects stability alot.
DRAM idle timer- Infinite
DRAM refresh-7.8 usec

OIther various settings
Spread Spectrum- disabled
ICH Delay-disabled
MPS version- If you have WinXP, 1.4
AGP size 64-128 MB

PCI PNP
Plug and Play O/S- enabled if you have XP
PCI Latency-32

I have tinkered extensively with this board, and found these settings aloow the best O/C and best benchmark scores. Some things here and there might need a tweak, but this should start you off well.

Post by **Apoptosis** » Mon Jun 28, 2004 7:15 pm

Welcome to the forums!

The ASUS P4C800E is a great board sounds like you need to follow Capper's advice because he has you down the right path. I also advise you like he did to get a better heatsink for the processor. You'll be happy in the long run and it should help you get better overclocking results!

infinitevalence · Post by **infinitevalence** » Mon Jun 28, 2004 7:23 pm

And a better heatsink will extend the life of the cpu.

LVCapo · Post by **LVCapo** » Tue Jun 29, 2004 12:09 am

Also, don't forget the latest BIOS, and something else I did. I went to the Intel website and downloaded the latest Chipset drivers from there instead of the ASUS site, not sure it made any difference, but it is a much more recent version than the one ASUS has.

jp2000 · Post by **jp2000** » Tue Jun 29, 2004 3:46 am

thanks everyone...especially to capper5016, thanks for spending all the time typing the reply..it was very helpful to me.
btw, could you give me a link on intel site that you went to update the chipset driver...I've still unable to update my BIOS yet...cuz I don't know how..and I'm scared to mess up with the BIOS.
could someone give me the links..and clear instructions on how to update the BIOS on P4C800 Deluxe please..thanks alot.

PS: what's the benefits after you update the bios on P4C800 deluxe?

Post by **Apoptosis** » Tue Jun 29, 2004 6:26 am

Here is the Link to the chipset driver. It's early in the morning, but I think its right.

infinitevalence · Post by **infinitevalence** » Tue Jun 29, 2004 7:41 am

Updating your bios is like patching software it will help stabiltiy give you (sometimes) more control. and often increases preformance.

LVCapo · Post by **LVCapo** » Tue Jun 29, 2004 9:11 am

Okay, First you want to go to the ASUS tools site http://www.asus.com/support/download/it ... Name=Tools
Here you are going to download the latest version of the ASUS auto updater (ASUS Update V5.28.01), while you are there, also download the latest ASUS probe (ASUS PC Probe V2.23.01).
Install the BIOS updater and run that, click auto select, and it will take a second then connect to a site. It will ask you which BIOS file you want, select the most recent (in your case 1016), then select update BIOS from internet, it will give you a new screen where it flashes the ROM, etc. then you will have to reboot. it will say "bas checksum" (don't worry). At this point, you need to hit "delete", or F1, depending on your computer and enter the BIOS, and reset all your setting you did last night. after you make all the adjustment, save them and reboot, look to see the BIOS version when it boots, that will confirm you got it right, any problems and you can PM me or get me through AIM or Yahoo.
After that , install the Probe, which will help you monitor the voltage and temps.
As to the Chipset drivers, download from here
http://downloadfinder.intel.com/scripts ... uctID=1043
, then reboot when prompted, after that you should reinstall your graphics card driver, then you are done and ready to rock..

jp2000 · Post by **jp2000** » Thu Jul 01, 2004 1:13 am

thanks capper.
My P4C800 BIOS is now updated to 1016 version, I like the way Asus make it very easy to update its BIOS.
I did buy the new HSF today, it's a zalman CNPS7000A cooper. I have to say that i"m a little disappointed with it since I expected it to help a lot with the temperature of the computer....but it seems help very little with the heat issue eventhought it runs more quite than the stock HSF comes with the prescott.

LVCapo · Post by **LVCapo** » Thu Jul 01, 2004 1:26 am

JP,
No problem man, glad to help even a little. If you ever need something, don't be afraid to ask, there are some great guys here with a whole bunch of knowledge.
As to the Zalman, what kind of temps are you getting? If you are using the fan controller i recommend taking it off and connecting straight to the Mobo. It might only improve it 200/300 rpm, but its a start. We'll keep tinkering with it and get you O/C happy!!!