EVGA GeForce GTX 570 HD Superclocked 1280 MB GDDR5 PCI Express 2.0 Dual DVI/HDMI/Display Port SLI Ready Limited Graphics Card, 012-P3-1573-AR 47.8 GT/s Texture Fill Rate 3900 MHz Effective Memory Clock and 1594 MHz Shader Clock 1280 MB 320-bit 0.5ns GDDR5 Memory PCI Express 2.0 GeForce GTX 570 HD Super clocked with 797 MHz Core Clock GeForce GTX 570 HD Superclocked with 797 MHz Core Clock PCI Express 2.0 1280 MB 320-bit 0.5ns GDDR5 Memory 3900 MHz Effective Memory Clock and 1594 MHz Shader Clock 47.8 GT/s Texture Fill Rate Microsoft DirectX 11 Support