Intel DX38BT Extreme Series X38 ATX DDR3 1333 3xPCIe 2.0x16 1333MHz FSB LGA775 Desktop Board - Retail Form factor: ATX (12.00 inches by 9.60 inches) Four 240-pin DDR3 SDRAM Dual Inline Memory Module (DIMM) sockets Intel High Definition Audio subsystem Gigabit (10/100/1000 Mbits/sec) LAN subsystem using the Intel 82566DC Gigabit Ethernet Controller Microsoft Windows Vista Premium ready