ZOTAC GeForce 8400GS 512MB DDR2 PCI Express (PCI-E) DVI/VGA Low Profile Video Card w/HDMI & HDCP Support ZOTAC GeForce 8400GS 512MB DDR2 PCI Express DVI Video Card w/HDMI General Features: Low profile PCB NVIDIA GeForce 8400 GS graphics processing unit (GPU) 567 MHz core clock 1400 MHz shader clock 512 MB GDDR2 memory 667 MHz memory clock 64-bit memory interface PCI Express x16 interface NVIDIA unified architecture NVIDIA PhysX technology NVIDIA CUDA technology NVIDIA Lumenex Engine NVIDIA GigaThread technology