jyjjy, I thought about what you wrote and it does make sense, I currently have an XFX 5770 and ever since i updated the drivers to 10.6 i've been having crashing problems but at least today I have not had one problem and im now thinking of getting a second XFX 5770 on newegg for 159.99 and just cross fire my rig, i dont know too much about dual gpu other than higer frame rate(i already hit 70FPS with my single card) and a hotter system. oh and my card is over clocked too, i have it set on 960MHz gpu clock and 1400MHz Memory Clock and set my fan control to 60%