EVGA GeForce GTX 580 FTW Hydro Copper 2 1536 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Limited Graphics Card, 015-P3-1589-AR GeForce GTX 580 FTW Hydro Copper 2 with 850 MHz Core Clock PCI Express 2.0 1536 MB 384-bit 0.4ns GDDR5 Memory 4196 MHz Effective Memory Clock and 1700 MHz Shader Clock 54.4 GT/s Texture Fill Rate Microsoft DirectX 11 Support