16xCSAA @ 1920x1200 140 Megs
I game at 1680x1050, with 16xCSAA, so I'm content with my memory usage. Also, I don't care for Crysis. Since I don't plan to upgrade my monitor anytime soon, I can safely say that I can stay in the middle class as far as VRAM goes, and remain quite content.
I do agree that, for high end gaming, 1GB cards offer a tangible benefit in some cases. But I think that Xion X2 offered an excellent example of why Memory bandwidth can sometimes be as important or more important than just total amount of memory.