EVGA 256-P2-N733-LR e-GeForce 8400GS 256MB PCI-E Graphics Card PCI Express x 16 Compatibility (PCI Express Compliant) 256-bit GeForce 8400GS with 459MHz clock 256MB 64-bit DDR2 memory 266.5 MHz clock/533 MHz effective memory rate DirectX 10 Support