I use my pc mostly for gaming. I want to have the best performance using my 720 phenom. I can have it at 3.5 if I activate the 4th core. But I can crank it all the way up to 3.7 and still trying with only 3 cores. I know that games now only use 2 cores but is the extra 200-300mhz worth ocing my 720 or should I leave it at 4cores at 3.5ghz. and will at that speed can a 5970 play nice on it without loosing any persformance?