I use nvidia in my box atm, i haven't had any problems with it and it tend to run all games on high without problems at my pc monitors maxium FPS, the card i use is GTX 285 even tro it's the smaller version of GTX 295 it's abit cheaper than it's larger counterpart, GTX 295 is my upgrade choice if i have to but i hope i don't have to untill i have to upgrade the comp anyway in the end.