z999

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hi,
I've began OCing my new PC (Q6600 on a ASUS P5QL-E),I set the voltage to auto and raised the FSB to 400, the computer did POST but vista didnt boot then i tried 390 Mhz and the computer booted and and i ran prime95 and speedfan said 61 degrees (celsious) and the voltage was 1.41 V is it possible to make the computer go up to 400 Mhz FSB
Ty...
 

rockbyter

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looks like you'll have to take a few things off auto. What memory are you using? also what are you reading to determine the 1.41v?
 
Depends on how good of a cooler you have.
You are probably going to need 1.5v+ to get it stable at 3.6Ghz.
Try dropping the multiplier to 8x, setting the FSB to 400Mhz and putting the voltage at 1.4v.
 

horendus

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Iv OC'ed a few q6600 in my time

3.6GHZ normally requires 1.45 - 1.475 depends on each chips.

Make sure you also increase the North Bridge voltage and keep your RAM at 1:1 (hoping you have DDR800 which is the norm now days)

good luck
 

z999

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I have DDR800 and a TRUE 120. what you're saying is that I need higher voltages on my NB and a little higher in the VTT (I think that's what it's called)? that's kinda weird because all the voltages are set to auto. ain't 1.5 a little high voltage?
 
With an ASUS P45 based Mb, you should be able to leave the Nb voltage on auto.
The BIOS has profiles to run it at a stock 400MHz.
It should keep your RAM at 800Mhz but it would be better to manually change the settings just to be sure.

1.5v is the highest recommended bye Intel for their 65nm Core 2 CPU's.
At higher voltages, you will have to keep a close eye on your loaded temps to make sure they do not go past 75c.
If it is passing 75c, you will need to lower your voltage and speed.
I know for sure a G0 Q6600 can handle 1.55v as that is what mine takes to be stable at 3.6Ghz.
 

z999

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thx you all. I forgot to set the ram timing so they won't change and that solved it, currently running prime95 at 1.45625 and the last run was 1 hour 30 minutes so I'm guessing that's gonna close up at a little under 1.5
 

a 6pack in

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thats good info. I had mine at 3.6 with 1.5v i will try to put more on my NB
 

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