Unless you'll be running some insane resolution, that should do just fine. My main box uses a Radeon 6750. I run a 1600 x 900 resolution and while I haven't run those to games in particular, I have played enough of Dead Space 3 to where it's been smooth as glass. I have Crysis 2 available, but I just haven't played it. I know Metro 2033 had some slight lag, but still held up pretty well.