upgrade from GeForce 9600 GT 512MB to what?

[toyota]

GTX 460 768mb vs 1gb is like 5% lower in performance and much cheaper in price. Would only matter much if using heavy AA which isn't likely in that rig.

again a gtx460 is capable of running some games at settings that use more than 768mb at 1920x1080. a couple of those even exceed 768mb without AA. and its possible that 768mb could limit settings and playability in some upcoming games too.