RE:and a number of the

Of course you're not going to see gobs of perforance increase in the first generation of 512mb gaming vid cards. The only thing that extra memory will really help is being able to handle much larger textures, such as Doom 3's "Ultra Quality" setting which has ZERO texture compressing and therefore requires a video card with a @#$% load of memory to handle them. And it should also overclock better.