I overclocked my X2 4400 to 2.5 GHz with a 250x10. Memory set at DDR333. When I play quicktime videos the video has a purple tint. When I play counter-strike source, the gun models are sometimes glowing white and everything is much lighter than usual even with the darkness set at the highest. WHen I lower the overclock to 2.42, 11x220, the problems go away. The video card is not overclocked yet. I ran dual instances of Prime for 9 hours without any errors. After 9 hours of prime CPU was around 56C. System in rig.