i paid 275 ar for gtx 570.. and if 660ti 2gb is a slight increase of power for 45 dollars. i dont mind.. but from reviews that 192bit bus is pretty terrible.
Im thinking of stepping up to the 670 but i would feel pretty terrible about it because of all the stellar reviews of the FTW edition
my dude.. the FTW is the same card with higher clocks. you can easily surpass those clocks with a ref 670.. you are buying the same card. Theres a reason the FTW and the ref. are so close in price...