The AMD Radeon HD 6990, apparently the most powerful gaming desktop video card in the market today, is now available for purchase in form of the XFX HD699AENF9, Sapphire 100310SR, MSI R6990-4PD4GD5, and HIS H699F4G4M.
The dual-GPU DirectX 11-compatible graphics cards have 3072 stream processors, 4GB of GDDR5 video memory, and a 256-bit memory interface.
The Radeon HD 6990 prices range from $710 to $740 (TigerDirect).
