675MHz Clock Rate / 1674MHz Shader Clock / PCI-E 2.0 / DirectX 10 Support / OpenGL 2.0 / Dual DVI out, HDTV + TV Out Shader Clock - 1674 MHz Outputs - Dual-Link DVI, HDTV + TV Out System Requirements - Two PCI Express 2.0 Slots, 1GB RAM, minimum 425W Power Supply, One 6-pin PCI Express supplementary power connectors -or- Two 4-pin PCI Express supplementary power connectors