For all current titles they can keep up, but you would have to make some compromises in the game settings.
Crysis ran with me only on medium settings despite 4GB of RAM and NEM
QuadCore 6700th
For this they use the potential of my Panasonic plasma from fully what has made me very happy.
Now I pass the card to my girlfriend and I can say that it has fulfilled its purpose, although I would have expected something better FPS. Especially with CoD4 Multiplayer I could not go the full resolution, which is why I had bought actually.
4 star is okay I guess.