GIGABYTE GeForce GTX580 1536 MB DDR5 2DVI/Mini HDMI PCI-Express Video Card, GV-N580UD-15I Chipset: GTX580 Engine Clock: 795 MHz Video Memory: 1536MB DDR5 Memory Clock: 4008 MHz Memory Interface: 384-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Stream Processors: 512 Max. Resolution: 2560 x 1600 Connectors: Dual DVI, Mini HDMI Thermal: Fansink Support Microsoft Windows 7/ Vista Support nVidia PhysX Technology Support nVidia CUDA Technology Support nVidia PureVideo HD Technology Support nVidia SLI Technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 Support Shader Model 5.0 and OpenGL 4.0 Minimum 600W or greater system power supply w/ 1x 6-pin & 1x 8-pin external power connector Support nVidia SLI Technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 Shader Model 5.0 and OpenGL 4.0 Minimum 600W or greater system power supply w/ 1x 6-pin & 1x 8-pin external power connector