EVGA 512-P3-N944-LR GeForce 9400 GT 512MB DDR2 PCI-E 2.0 Graphics Card PCI Express 2.0 Support GeForce 9400 GT with 550MHz clock 512MB of 128 bit DDR2 memory 400 MHz clock with 800 MHz effective memory rate Full DirectX 10 and OpenGL 2.1 support