Just got my 512 8800GTS and I have to say - its good!
Ill post some infomation when I install Crysis, all ill tell you for now is I get 13460 in 3DMark06 and 60FPS (Max with Quad Core) in World of Warcraft
Direct X 10 @ 1280x1204 in Crysis:
High Settings: 38.14fps Average
Very High: 20.79fps Average