Sapphire Readies HD 7970 with 1335 MHz GPU Clock
 

We tend to be skeptical about AMD or NVIDIA claiming stellar overclocking capabilities of their upcoming GPUs, but this time, it seems AMD wasn't playing the same old PR games. Sapphire is readying a non-reference design HD 7970 graphics card that boasts of 1335 MHz GPU clock speed. Out of the box!

http://vr-zone.com/articles/sapphire...ock/14397.html