AMD Radeon HD 7970 GHz Edition Review – Tahiti’s Boost from Overclocking and Drivers
Futuremark's 3DMark 11 is one of the most iconic benchmarks around, and their highly anticipated Windows 8 refresh is just around the corner. The 13.5/9% increase in clocks of the GHz Edition gave an average 9% improvement over the older HD 7970, although it is still not enough to catch up with the GTX 680 which remained about 13% ahead.
Unigine Heaven 3.0
As we turned up the image quality, the GTX 680's puny 2GB framebuffer showed its ugly side.