Quote Originally Posted by antonfrompresto View Post
I would be quite happy with a 320MB or 640MB 8800GTS but definately want a G0 stepping Q6600 so would it be stable with a high 24/7 overclock of the CPU and GPU? The 8800GTS is a lot less power hungry than the HD 2900XT isn't it?
Yes. but...

18ax12v=216w.

MAX.

120w cpu @ 150%=180w.

MINIMUM.

That leaves you with 26w extra.

Problem is, cpu's power consumption is not a linear scale. Figure exponential growth, as you do not even get linear growth just increasing speed, nevermind voltage.

At stock, yes, this psu may be OK. it really depends on how it deals with the crossload you will apply(high 12v, low 5v/3.3v) as well.