AMD Radeon HD 7970 3GB GHz Edition Review @ Hardware Canucks
 

Not willing to be outdone by NVIDIA, AMD is upping the ante with their new HD 7970 GHz Edition, a graphics card that's supposed to regain the performance crown and ultimately beat the GTX 680 clean. That's a tall order to accomplish but with a 1GHz clock speed, a Boost feature and 6GHz memory modules, this new product may just have what it takes.

http://www.hardwarecanucks.com/forum...on-review.html