If the game runs and plays well, don't sweat it and enjoy the game. I know someone in the same boat, and he's been playing all through beta and release and does not have any issues.
I think it may be an onboard video thing, but it works fine for him.
Not right now since I'm at work. I think it's a G-Force 2 or something like that. Not the best card in the world, but significantly better than the Intel Graphics card that came with the computer.