I think 850W is good enough, unless you're using SLI or CrossFire. (based on most recommendation of using 1000W psu for SLI)

I'm using 700W and OCed my i7 920 to a stable 3.8GHz. I'm trying for 4GHz.

After an hour of stress test using Prime95



This post has been edited by ganstream1: Feb 11 2010, 02:53 AM