EVGA GeForce 9500 GT 512 MB DDR2 PCI Express 2.0 2DVI/HDTV SLI Ready Graphics Card, 512-P3-N954-TR PCI Express 2.0 Support GeForce 9500 GT with 550MHz clock 512MB 256 bit 0.8ns GDDR2 memory 800 MHz clock with 1600 MHz effective memory rate Full DirectX 10 and OpenGL 2.1 support