to support my theroy that vram is the single most over rated thing in the computer industry.
its from the 8800GTS 512MB bench article but look at the FPS on the 320mb vs the 640mb. without AA\AF.
a measly .3 FPS increase at 1600x1200. thats the equalivlent of 1680x1050 for wide screens.
even higher resoultion and the 320mb stand up to the challenege as long as there is no AA\AF, tomshardware might not have tested that though...
unless you really care about filtering than the following people IMO got ripped off (all people with 640mb GTS's)
Congrats to people who bought the 320MB version
ill add you if you got one of the cards
those are off the top of my head