EVGA 512-P3-1151-TR Geforce GTS 250 Superclocked 512 MB DDR3 PCI-Express 2.0 Graphics Card PCI Express 2.0 GeForce GTS 250 Superclocked with 771 MHz clock 512MB of DDR3 memory 2246 MHz memory clock and 1890 MHz shader clock Full DirectX 10 Shader model 4.0 and Open GL 3.0 Support