@Talbot

If money isn't an issue definately get the GTX. Always buy the best that you can with the money that you have. No reason to skimp out and then regret it later. You will definately want the extra horsepower when doing some higher rez gaming.

@Judge
There is no 512MB version of the GTS. There is a 320MB version(recently released) and there is the 640MB version. Right now if you are thinking about getting a 7900 series card it would be way better to get a GTS 320MB because not only do you have DX10 capability but it will beat any other card at DX9, besides it bigger brothers of course.

@ Bijo

I am not sure how they come up with the naming conventions for their cards. I will do some more research and see what I come up with. Also, really no need to worry about the naming conventions, guys like me will always be around to help you out as to what is the best bang for your buck.