Alright, you can play:
FEAR, FEAR Expansions, FEAR 2, FEAR 2 DLC
Fallout 3, Left4Dead2, Left4Dead, All Orange Box titles, Wings of Prey, UT3, Assasins Creed 1+2, wait a minute...
Like I said, you can play any game, just that higher/demnding games will of course cause you to need the settings to be at low-med at your basic resolution size.