EVGA 512-P3-N884-AR 512MB GeForce 9800 GTX + Superclocked DDR3 PCI-Express 2.0 Graphics Card PCI Express 2.0 Compatible GeForce 9800 GTX+ with 756 MHz clock 512MB 256-bit 0.8 ns GDDR3 memory 1123 MHz clock with 2246 MHz effective memory rate and 1836 MHz Shader Clock Full DirectX 10 and Open GL 2.1 Support