EVGA 512-P3-N940-LR GeForce 9400 GT 512 MB DDR2 PCI-Express 2.0 Graphics Card PCI Express 2.0 9400GT with 550MHz clock 512MB of DDR2 memory 800 MHz memory clock and 1400 MHz shader clock Full DirectX 10 Shader model 4.0 and Open GL 3.0 Support