Quote Originally Posted by suphiceto View Post
Today I reinstalled my OS, I was on 64bit windows7 and now back to 32bit vista. For that reason I had some head room to tweak and play with my clock settings and I have achived these benchmarks with my 720be 4 cores OCCT stable (will be priming tonight)....
On average with air cooling, you will have about 200MHz more headroom with Vista 32 over Vista 64 at like settings once you hit the 3.7~3.8GHz range. On good water, the difference is about 300MHz between operating systems and on LN2, oh about 2.1GHz. Right around the 3.95GHz range with Vista 64 or Win7 64, you will hit a clocking wall. So far today, we finally hit 4.3GHz stable on V64 with LN2, exact same settings on V32 got us 6.4GHz.