MSI GeForce GTX580 1536 MB DDR5 2DVI/Mini HDMI PCI-Express Video Card N580GTX TWIN FROZR II/OC GeForce GTX580 Engine Clock: 800 MHz Video Memory. 4.096 GHz Memory Interface. 400 MHz Stream Processors. Dual DVI, Mini HDMI Thermal. Windows 7 Support nVidia PhysX Technology Support nVidia CUDA Technology Support. High-bandwidth Digital Content Protection Support Microsoft DirectX 11 and OpenGL 4.0.