it depends on the game..... its not the Nvidia or Ati is better. It depends which model, neither are specifically better than the other at something. I personally lean to Nvidia for better drivers, and I have always had good performance from Nvidia cards, many of my friends have had alot of problems with ATI but ive never had a problem, except when my old card melted.... but that was because it got like 130C+. (It was in a crappy compaq with bad cooling on a really hot summer day)