ok how about the Geforce 8800 GTS 320 MB OC by BFG?
The benchmarks show it can pretty much play about anything on par with its 640MB brother, until you start maxing out the specs ALL the way and I mean like literally all the way. 1600x1600 Oblivion? No problem
+ Its SLI compatible.
320$
In gamer's lingo, that pretty much means "GG"