I realize the irony of doing what essentially amounts to advertising on a socialist site, but I wanted to put this out there for comrades that are low on cash, but want a gaming pc. This is a pretty difficult deal to beat in terms of bang-per-buck. The only thing I it's lacking is a little bit of memory, but that can be upgraded at any time, and it'll probably play most modern games short of Crysis very well right out of the box.

Edit: This one is better, and $50 cheaper