oh, good choice on the cooler! I had a 945(pretty much the same; clock speed etc) and was able to over clock it 100% stable to 4.1 Ghz on the board in my sig. I was using watercooling, never got above 55C....but you should be able to gert close to that. Just bump the fsb up gradually. I wouldnt go above 1.45 on the voltage, and depending on what your comfortable with.....i wouldnt let the temps get above 60-65. Post back when you get results. Im kinda interested in the compatison of my watercooling rig to you air cooler.