If one cares about price/performance, before buying any graphics card, one should check the graphics card hierarchy chart:
Wow that is a very helpful link. I knew I wasn't crazy, my new GT 430 card is slower than the 9600 GT I bought more than a year ago. WTF.
Return time. Looking over that list the naming of these cards is some sort of sick game these companies are playing.
HD 4870 is better than HD 4830, HD 5670, HD 6670.
GTX 295 is better than GTX 260, GTX 275, GTX 280, GTX 460 768 MB, GTX 460 SE, GTX 550 Ti.
Jeez. What a mess.