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Help overclocking Intel P4 2.6Ghz Northwood (478)

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December 14, 2008 11:47:48 PM

Hi all.

I've decided to try and OC my old rig (Intel P4 2.6Ghz Northwood S478/ Asus P4P800SE / 1GB (2X512MB) Corsair XMS3200XL (2-2-2-5).

I am very new to overclocking and need some help. I have the XP-90 CPU cooler which is keeping temps ~ 30C idle and around 36-39C full load using Prime95.

The thing I am confused about is the RAM frequency.
Here is what I've done so far;

Gone into BIOS and slowly increase FSB to 240MHz (currently running stable @ 3.1GHz).

I opened CPU-Z to find the memory running at 160MHz - why is this?
Shouldn't it be running at 240MHz?
Will my RAM go to 240MHz OK?

Screenshots;




Any help would be appreciated.
December 14, 2008 11:49:52 PM

Quick update;


I just ran a torture test with Prime95 and it failed very quick @ 240MHz. :( 

Will it help if I increase the CPU voltage? What is a safe voltage to use with this CPU?
December 14, 2008 11:57:50 PM

Northwoods suffer from SNDS, Sudden Northwood Death Syndrom i belive if you increase the voltage to anything at 1.6v or higher = card will quickly decay and only be able to run on lower clocks then normally

Just a little somthing something.

http://www.ocforums.com/showthread.php?t=115166
January 23, 2009 7:06:31 PM

GSD said:
Quick update;


I just ran a torture test with Prime95 and it failed very quick @ 240MHz. :( 

Will it help if I increase the CPU voltage? What is a safe voltage to use with this CPU?



The reason for failure could be a RAM not a CPU.

You didnt attach an SPD screen of CPUz which will show Your memory timing.

Maybe at 160MHz is CL2 too tight for them.
!