first off, I'd for sure pull off the heatsink on the northbridge and change to a better thermal compound. Then put a 50mm or something blowing down to keep it cool.

After that's said and done, try to go no more than 1.60vmch, and around 1.55vtt. Less than 1.8vsb/pcie, and 1.2ish vich.

http://www.xtremesystems.org/forums/...04&postcount=8 for what intel says.

obviously, some of them are extremely low. For instance, vtt, cpu can handle a decent vtt (same as vcore, although not mentioned in the post I linked). But vtt on the northbridge side is real damn low. But you shouldn't need much vtt at all up until 500 or so, where you start to need a bit and then more and more.

I see you're using c2d. quads on the other hand have shown to need more vtt in order to respond to 400+ usually.

ichio is also known as sb/pcie. not sure what the qgt says. you shouldn't need more than +0.1 or +0.2 (1.6, 1.7) if that.

ich I'm not too sure of, since max and abs max have such a huge difference. seems like somewhere under 1.3v should be ok, but don't quote me on that.