Club 3D HD 7870 jokerCard Tahiti LE 2 GB @ techPowerUp
 

Club3D is first to release a Tahiti LE based HD 7870. Their jokerCard runs 1536 shaders with very decent clock speeds, which results in an 8% performance improvement over HD 7870, just 2% shy of matching HD 7950. This performance increase does come at the cost of increased power draw though.

http://www.techpowerup.com/reviews/C...ard_Tahiti_LE/