Intel Quad-core CPU Ready. Intel Core2 Extreme / Core2 Duo Ready. Intel P45 / ICH10R Chipset. FSB 1600/1333/1066/800 MHz. 4 dimm, max 16GB DDR3 1800(OC)/1600/1333/1066 Support. 2 PCIe X16 with CrossFireX Technology support. 6 SATA II (RAID 0,1,5,10) + 2 SATA II for EZ Buckup & Super Speed functions. Gb LAN. 8-CH High Definition Audio CODEC. DDR3 1800(O.C.) Better Performance! EPU-6 Engine System Level Energy Saving! ASUS 8-phase Power Design High Quality Power Components. Drive Xpert Plug and Safe! Express Gate 5 Secs from Bootup to Online! 100% Japan-made Solid Capacitor and VRM 5000hr Cap Best Quality and longer Lifespan!