The Sapphire Radeon HD5750 1GB graphics card does a lot of things better than you might expect from a 'mid-level' card. This isn't a top of the line gaming card, but it is does offer enough muscle to make games enjoyable even with the settings turned up pretty high. On top of the performance, it ran cool, quiet, and didn't tax the electric meter mush at all.
http://www.bigbruin.com/content/sapphirehd5750_1