When they hit 9000 series ATI added an X
As far as game bundles, Battlefield 4 , Company of Heroes 2, among other big AAA titles are supposed to be int he next bundle.
To top it off, unlike the GTX 770 it's an actual core change (GTX 780 is inaccessible to most people).
AMD's double precision compute is less gimped on Pitcairn(1/16 FP64) and Cape Verde (1/16 FP64) than GTX 780 (1/24), GK104 (1/24) , GK106 (1/24). Tahiti is 1/4 FP64 while TITAN is 1/3 FP64.
(edit for clarity)
Edited by AlphaC - 7/1/13 at 12:53pm