EVGA 640-P2-N829-AR e-GeForce 8800 GTS SSC Edition 640MB DDR3 PCI-Express Graphics Card PCI Express x-16 320-bit GeForce 8800 GTS SSC Edition with 576MHz clock 640MB 320-bit 1.1 ns GDDR3 memory 900 MHz clock/1.8 GHz effective memory rate Full DirectX 10 and Shader Model 4.0 Support