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P5Q Pro Overclocking

375FSB is stable with a bump in voltage to 1.4V, but 400 is not stable. I think I may have to settle for 3.GHz on this chip since I don't want to push much further than 1.4V really.

With a VID of 1.350v, you'll be absolutely fine going over 1.4v :)

Your chip won't overheat, especially with a noctua cooler. Try 1.4250v and see if that gets you further. :)
 
Righto, shall pop the chip up a notch or two and put the NB volts to 1.20 (it's at 1.16 atm).

I'm starting to think there's nothing wrong with the mobo after all and I have a pretty rubbish CPU here. I have an E6600 that I can also test, but I wouldn't expect a blistering clock from it either.
 
Not stable at 400FSB with 1.4250V (in BIOS, some vdroop). Going to put the chip up a little more. NB volts are at 1.20 now.

Any other settings/voltages that I should look to up in this case?
 
Just tried 1.44V on the CPU but it's pushing 70 degrees under load, which is a tad hotter than i'd like, so I think I'm going to settle at 375FSB and call it a day. Looks like it's probably all the chips got in it after all.

May be time to swap it for a quad or something that should clock better, but don't really have the cash to spend more on my machine after a spate of recent upgrades and the fact I have another PSU to RMA that's going to cost a small fortune in postage!

Thanks guys for all the help you've given me, it's been very useful. Unfortunately it looks like this chip hasn't got any more in it, so i'm leaving it there, unless any of you want to buy it for £75! :p

EDIT: Pah, OK i'll try the NB again! I now know the overclocking bug.....
 
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No luck with NB at 1.24V. Going to drop back down a bit now and see what the closest I can get to 3.2 is, and the lowest volts. I really don't think the CPU is up to it now, shame, but it has already given me almost 2 years good service on stock most of the time, just it's bottlenecking my system a great deal now.
 
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