If you’re a gamer, you’re going to want to check out this site:
http://www.systemrequirementslab.com/referrer/srtest
It has the means via a light weight browser based java applet, to detect if your computer is capable of running certain games. Most popular titles are selectable, and I did a few test runs, and was pleased with the quality of the results. It tells you exactly why your computer does not pass minimum specifications for a game.
Michael's Techbox 