Gigabyte nVidia GeForce GTX570 1280MB DDR5 2DVI/Mini HDMI PCI-Express Video Card GV-N570OC-13I Chipset: GTX570 Engine Clock: 780 MHz Video Memory: 1280MB DDR5 Support Microsoft Windows 7/ Vista Memory Clock: 3800 MHz Memory Interface: 320-bit Bus: PCI-Express 2.0 x16Support nVidia PhysX Technology RAMDAC: 400 MHz Stream Processors: 480 Max. Resolution: 2560 x 1600Support nVidia CUDA Technology Connectors: Dual DVI, Mini HDMI Thermal: FansinkSupport nVidia SLI Technology Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11, Shader Model 5.0 and OpenGL 4.1 Minimum 600W or greater system power supply w/ 1x 6-pin & 1x 8-pin external power connector