Product Description550MHz Clock Speed / 1375MHz Shader Clock / PCI-Express 2.0 / DirectX 10 Support / OpenGL 2.1 / 2 x DVI-I out, HDTV Out / NVIDIA SLI Ready 38.4GB per second memory bandwidth 16x Full-screen Anti-Aliasing True 128-bit floating point high dynamic-range (HDR) NVIDIA Unified Architecture Full Microsoft DirectX 10 Shader Model 4.0 support NVIDIA SLI Ready NVIDIA PureVideo HD Technology NVIDIA Quantum Effects physics processing technology NVIDIA UltraShadow II Technology OpenGL 2.1 Support Connectors - 2 x DVI-I, HDTV Support System Requirements - Minimum of 400 Watt Power Supply (Minimum recommended power supply with +12 Volt current rating of 22 Amps), Minimum 450 Watt for SLI mode system (Minimum recommended power supply with +12 Volt current rating of 24 Amps), An available 6 pin PCI-E power connector (hard drive power dongle to PCI-E 6 pin adapter included with card)