DONT buy the 8800gts 320mb version, i have it now, and im taking it back. It can not run Dark messiah of might and magic at max settings, and i play oblivion with a mod that adds MUCH better textures, and the 8800gts 320mb just doesn't have enough memory. 320 is too small for games now a days, Stalker on max alone uses over 600mb of video memory same with dark messiah, oblivion with the mod uses over 700, i am definatly going with the 640mb version, much much much more future proof. Please listen to me, i know from experience!
(Update)
Just read yer sig nexus, i got the same card, its boxed up as we speak getting ready to be sent back to newegg.