HD 2900 PRO with less shaders, pipelines and only 256-bit memory bus. Zaatharen's card: ATi R600 GPUATi R600 GPU Sapphire Radeon HD2900 GTSapphire Radeon HD2900 GT Sapphire Radeon HD2900 GTSapphire Radeon HD2900 GT Sapphire Radeon HD2900 GTSapphire Radeon HD2900 GT Sapphire Radeon HD2900 GTSapphire Radeon HD2900 GT