BFG Tech GeForce 8400GS 512MB DDR2 PCI Express (PCI-E) DVI/VGA Video Card w/HDCP Support BFG Tech GeForce 8400GS 512MB DDR2 PCI Express Video Card General Features: NVIDIA GeForce 8400 GS graphics processing unit (GPU) Core clock: 450 MHz Shader clock: 1134MHz 512 MB DDR2 memory 64-bit memory interface 600 MHz memory data rate PCI Express 2.0 x16 interface NVIDIA Unified Architecture NVIDIA GigaThread technology NVIDIA Lumenex Engine NVIDIA Quantum Effects