galaxy 8400gs 256mb ddr2 64-bit, galaxy, pci-e 16x, 450/800mhz, vga, dvi, hdtv, hdcp, directx® 10, fan, low profile brackets included. galaxy geforce 8400gs pci-e x16 256mb ddr2 64-bit, core clock: 450, memory clock: 800mhz, crt, hdtv, dvi, fan, texture fill rate: 3.6 billion/second, memory bandwidth: 6.4 gb/second, directx 10 shader model 4.0 support, 1128-bit floating point high dynamic-range (hdr) lighting, nvidia quantum effects physics processing technology, dual-link dvi maximum resolution: 2560x1600, hdcp capable, microsoft windows vista capable, low profile brackets included.