You can also check this http://cyri.systemrequirementslab.com/srtest/ (from user Kweenix) for a game.
If your game isn't there, read this guide.
You can download this app to view your hardware, but this shows more than you need, so you will need to hunt down what you're looking for. It is good for computer pros. (thanks to johnf888) It's still good to check it out though.