Even a single card of equal performance to your sli setup(cough 580 /cough) will feel like leap in performance.
How do you figure? most reviews i have seen placed SLI 460's equal to a 580 so with my OC i should be in the 10-15% performance advantage over a stock 580(granted i can OC the 580 to equal what i have now).
I have no issue paying for a flagship card(such as a 580 or 7970) but its going to need to offer higher performance than what i currently have. Im definatly not going to take a step back, or a useless step forward(less than 30% increase in performance)just to go to single a card.
If i have to wait it out then thats what I'll do but the upgrade itch is getting pretty bad, been stuck on current system for well over a year now and now neither SB, BD or the 7xxx series has offered enough reason to upgrade something
I had higher hopes for AMD's flagship card, with a whole new design from the ground up i was expecting a 8800GTX type of performance increase.
Guess ill put all my eggs in the kepler high end basket and hope for the best.