[citation][nom]soldier37[/nom]Gtx 260 - poor man's card.... When you all grow up you can get a 5970 and 2560 x 1600 res and game like it should be seen.[/citation]
Considering GPUs have been able to do 2560 x 1600 for a while now, you don't need to buy that card.
On another note, until games start supporting DX11, you won't see that much of a jump in performance yet. Just like how ATI went with DX10.1, and saw very little gains across the board. Granted now that both camps are DX11 ready, it is now up to developers to utilize it.