nobody knows. but it seems the 970 will be roughly equal to the 780 and the 980 will be roughly equal to the 780ti, plus or minus a few percentage points. gm204 may overclock this way or that way too making the differences larger. if your wanting the next big thing, you will have to wait for the flagship maxwell gm210 chips which i would guess will come out sometime next year this time. gtx990 and gtx1000???