EVGA GTX 780 Ti Classified 3072 MB @ techPowerUp
 

EVGA's GTX 780 Ti Classified is the fastest GTX 780 Ti we ever tested. It comes with a large overclock out of the box that makes it run above 1175 MHz most of the time. The dual-fan ACX heatsink also provides good cooling, resulting in low temperatures and stable operation at all times.

http://www.techpowerup.com/reviews/E...Ti_Classified/