EVGA 896-P3-1171-AR GeForce GTX 275 Superclocked 896 MB DDR3 PCI-Express 2.0 Graphics Card PCI Express 2.0 GeForce GTX 275 Superclocked version with 648 MHz clock 896MB of DDR3 memory 2376 MHz memory clock and 1458 MHz shader clock Full DirectX 10 Shader model 4.0 and Open GL 3.0 Support