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What is a safe OC CPU Tempurature for P4 (C / NorthWood)?

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November 5, 2006 3:25:26 AM

What is the max tempature I want to run my P4 (C, northwood)? I am using an Asus p4c800 Deluxe as the MB.
And what is a good idle temp?
Thanks,
PS Fast answers would be appreciated as I am ocing it now and don't want to ruine my chip, thanks again
Dev

EDIT - How long should I run Prime 95 to find out if my system is stable or not? Thanks
November 5, 2006 3:44:53 AM

I have another question, According to CPU-z While I'm running prime 95 (2 copies one on each thread) MY vcore voltage is fluctueating by .06v and as it does my Core speed Bus speed and Rated FSB are all in flux. Is this supposed to happen?
Thanks
November 5, 2006 4:01:23 AM

i wouldnt run it idle above 55.. and thats cutting it
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November 5, 2006 4:02:24 AM

and how much are they fluxtuating?
November 5, 2006 4:02:58 AM

Thanks for the Reply.

Ok I will make a note of that.
But Do you have any Idea what temp it should not exceed while taxed?
Thanks
November 5, 2006 4:05:11 AM

Quote:
and how much are they fluxtuating?


I belive the Core Speed was changeing by maybe 50mhz So from 3150-3100mhz I can re overclock and check I stopped ocing and put it back to normal until I heard from someone.
November 5, 2006 4:17:16 AM

Right now the vcore is changeing in incraments of about .03 and a range of 1.6XX to 1.73 but usueally its between 1.616 and 1.694.
The Core Speed is Changeing from ~3150 to 3162
Bus speed is changeing from 225-226
Rated is changeing from 900-94

EDIT - Im also running at about 69 C at 100% processor (2 instances of prime 95 after 8 minutes)
November 5, 2006 4:31:03 AM

Quote:
i wouldnt run it idle above 55.. and thats cutting it


My current Idle temp is around 43 C and thats with it running at 1.7 vcore and about 225 FSB. It might get cooler but thats after the temp was just 69 and running prime about 10 min ago

So what I'm thinking is that I want to up the fsb abit more until it becomes unstable when I run prime(for like 5 min?) and then According to the oc Guide I read I should then lower the voltage. Does that sound about right?
December 8, 2006 3:48:40 PM

I got mine to about 3.52 w/idle temps at 48.5C stable, thats setting it to 220, my Ram is set to 5:4 I havent OC any higher until I get some aftermarket cooling. The CPU hits about 70C with load already. Runs stable and Ive had it set like this for months...
December 9, 2006 4:32:53 AM

Quote:
Right now the vcore is changeing in incraments of about .03 and a range of 1.6XX to 1.73 but usueally its between 1.616 and 1.694.
The Core Speed is Changeing from ~3150 to 3162
Bus speed is changeing from 225-226
Rated is changeing from 900-94

EDIT - Im also running at about 69 C at 100% processor (2 instances of prime 95 after 8 minutes)
That's weird. The Core speed shouldn't be fluctuating that much. 3-5MHz..yeah. The vCore fluctuation is normal(it's called vDroop) for these boards, and a source of great debate in the overclocking community. There is a vDroop mod that requires soldering a resistor(potentiometer)to the motherboard, and if done improperly will kill the motherboard. Do Not take the vCore over 1.70v, as there's a very real chance that you'll fry the chip(NSDS=Northwood Sudden Death Syndrome).69C is getting pretty high for Northwood. I would look for some better cooling(either by HS/F or better case cooling), or notch the vCore down a smidgeon. When i had my 3.0C @ 3510 on my P4C800, it idled at ~ 45C and load was ~ 55C. GL :) 
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