EVGA nVidia GeForce GTS 250 512 MB DDR3 VGA/DVI/HDMI PCI-Express Video Card 512-P3-1140-TR PCI Express 2.0, HDMI, DVI-I, and VGA interfaces GeForce GTS 250 with 675 MHz core clock 512 MB of DDR3 memory 1800 MHz memory clock and 1620 MHz shader clock Full DirectX 10 Shader model 4.0 and Open GL 3.1 Support