Testbed:

Motherboard: EVGA X79 FTW
CPU: Sandy Bridge-E Core i7 3820  (3.6GHz)
CPU Cooler: Thermalright HR-02 (Thermalright-Europa Distri www.PC-Cooling.de).
Memory: 8GB ADATA DDR3 1600 XPG Gaming series
Harddisk:   OCZ Vertex 2 100 GB
Power Supply: CoolerMaster Silent Pro 1000W
Case: CoolerMaster Cosmos II Ultra Tower
Operating System: Win7 64-bit

Nvidia 306.38-desktop-win7-winvista-64bit-english-beta
AMD 12-9_vista_win7_64_dd_ccc
GTX 690 4GB driver-310.33-beta
Devil 13 HD 7990 12-11_beta4