So i currently have a gtx 660ti, i wanna upgrade to a new gpu in the hope of running Star Citizen on high. I'm thinking of getting another 660ti and setting it up in 2 way sli with my current 660, and wait for the 800 series from nvidia. Or will a 760 be a better investment? I guess what im really asking is should i get 600 series sli, 700 series card or do the long wait for the 800 series?