Oh god.. Totally forgot that when i changed from 32bit xp to 64bit vista.. My bad totally forgot to recheck my stressing programs.. Hmm you say 64bit has driver issues.. That could be true a few years back when vista was first launched..? Now it seems that 64bit drivers are popping out everywhere.. Reason for going to 64bit for me was basically dx10 and more then 3gb of ram that 32bit os allowed.. I'm more into image quality is a priority over higher fps offered by dx9.. I'll try the 64bit version of prime95 and hope it doesn't use up all the ram..