Well, will the 660 non ti be any cheaper or better then the 7870
the 660 non ti will use GK 106 making it an entirely different card compared to the 660ti/670/680/690 are so performance wont be as linear probably. If wcctech's info on 660 normal is right
It will be more in line somewhere around a 7850/7870ish (finally a higher end 1 6 pin nvidia card) with pricing lower than the 7850ish(so expect the card closer to the 7850 entirely). If I were to make a educated guess on the 660 normal, It will outperform the 7850 probably, except in SLI vs crossfire, as the 192 bit memory bus has already shown slight chokes in heavy games when anti-aliasing is on. but regardless will probably be a fine card for the price.