MSI nVidia GeForce GTX570 OC 1280MB DDR5 2DVI/Mini HDMI PCI-Express Video Card (N570GTX-M2D12D5/OC) Chipset: GeForce GTX570 Engine Clock: 786 MHz Video Memory: 1280MB DDR5 Memory Clock: 4200 MHz Memory Interface: 320-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Max. Resolution: 2560 x 1600 Connectors: Dual DVI, Mini HDMI Thermal: Fansink Support Microsoft Windows 7 Support nVidia PhysX Technology Support nVidia CUDA Technology Support nVidia 3D Vision Technology Support 3-way nVidia SLI Technology Support nVidia PureVideo HD Technology Support Blu-ray and HD DVD Support HDCP - High-bandwidth Digital Content Protection Support Microsoft DirectX 11 and OpenGL 4.1