Okay went ahead and tried to OC my 4400+ I managed to get 2.875ghz, but it aint stable it's really awkward I wonder what I'm doing wrong with this thing. In bios I turned HT to 800, DDR2 to 667, change FSB to 250 or 255, and up the voltage +100.mv It's been kinda awkward I'm using artic silver ceramique and I wonder if that is causing an issue. Temps were somewhere in the 40's I couldn't check the full load temps at all. CPU cooler is pushing over 5000RPM's from what has been going on, system has been locking up, I'll leave it on over night and thing will just lock up. It locked up 3 times today and I put everything back to stock settings. I wonder what else needs voltage?? I also wonder if I need to reflash the bios again because before it hits the vista splash screen it sits there for about 2 mins, normally bios usually hauls butt to get to the splash screen. I'm thinking of reflashing it because the sys did hang a bit while I flashed it the first time. So I'm just wondering 1. Reflash bios?? 2. Change cpu thermal paste?? 3. Add more voltage??? and if so to what??? 4. Change CPU cooler??