Re: GTX 460: 768MB or 1GB?
Yes it's separate. Honestly it looked like even the 768 MB version wasn't choking on 1920x1080 with 4x AA. The 1 GB was usually a couple frames faster (Maybe because of the 256-bit bus?) but it was pretty negligible especially if you overclock it. But $20-$30 is not much of a premium for the extra VRAM so why not I guess.