ASUS RADEON HD 7770 REVIEW - "The Asus Radeon HD 7770 review also features the Powercolor Radeon HD 6790. The Asus Radeon HD 7770 uses the Capeverde GPU at 1000Mhz and has 1GB GDDR5 memory running at 4500Mhz. The Asus Radeon HD 7770 has a 128Bit Memory Interface, 640 Shader Processors and DirectX 11.1. The Powercolor Radeon HD 6790 uses the Barts GPU at 840Mhz and has 1GB GDDR5 memory running at 4200Mhz. The Powercolor Radeon HD 6790 has a 256Bit Memory Interface, 800 Shader Processors and DirectX 11. We will be testing the Asus Radeon HD 7770 and Powercolor Radeon HD 6790 using Battlefield 3, Crysis 2, Diablo 3, Dragon Age II, Max Payne 3, Sleeping Dogs and Elder Scrolls V Skyrim."