AMD Radeon HD 7970 GHz Edition 3 GB @ techPowerUp
 

Today AMD launches the HD 7970 GHz Edition, in a move to take away the performance crown from NVIDIA. The new card boasts clock speeds of 1050 MHz GPU and 1500 MHz memory. Price-wise the card is on the same level as the GTX 680, but is that enough to defeat NVIDIA's single GPU flagship?

http://www.techpowerup.com/reviews/A...0_GHz_Edition/