galaxy 8400gs 512mb ddr2 64-bit, galaxy, pci-e 16x, vga, hdtv, dvi, fan, includes 2x low profile brackets. galaxy geforce 8400gs pci-e x16 512mb ddr2 64-bit, vga, hdtv, dvi, fan, texture fill rate: 3.6 billion/second, memory bandwidth: 6.4 gb/second, directx 10 shader model 4.0 support, 128-bit floating point high dynamic-range (hdr) lighting, nvidia quantum effects phyx processing technology, dual-link dvi, microsoft windows vista capable, , includes 2x low profile brackets.