Nvidia 1GB ASUS GTX 280 .

GPU Engine Specs: 240CUDA Cores1 602MHzGraphics Clock (MHz) 1296MHzProcessor Clock (MHz) 48.2Texture Fill Rate (billion/sec) Memory Specs: 1107MHzMemory Clock 1GBStandard Memory Config 512-bitMemory Interface Width5 141.7Memory Bandwidth (GB/sec) Feature Support: 2.1OpenGL YesCertified for Windows 7 3D Vision, PhysX, CUDA, SLISupported Technologies3 2-way, 3-waySLI Options4 Display Support: YesMulti Monitor 2560x1600Maximum Digital Resolution 2048x1536Maximum VGA Resolution YesHDCP2 HDTV, Dual Link DVIStandard Display Connectors SPDIFAudio Input for HDMI Standard Graphics Card Dimensions: 10.5 inches (267 mm)Length 4.376 inches (111 mm)Height Dual-slotWidth Thermal and Power Specs: 105 CMaximum GPU Temperature (in C) 236 WMaximum Graphics Card Power (W) 550 WMinimum System Power Requirement (W) 6-pin & 8-pin Comes with connectors