ive had 4 seperate ati cards, and 4 seperate nvidia cards sicne 1998, and overall, i find the nvidia's to be better. The performance increases they get form new drivers alone is incredible. ATI cannot match that (20-30% increase) when it releases new drivers, even though it still raises its performance as well. I am about to purchase a maxed out alienware custom system ith an nvidia 5900 ultra. Spec for spec, the ati top model card just doesnt compete.