Nforce 680I Lga 775 Dc MAX-8GB DDR2 Atx 4PCIE 2PCI X-fi Aud Esata Support Socket 775 for Intel Core 2 Quad, Core 2 Extreme, Core 2 Duo, Pentium 4 (Prescott, P4EE), Pentium D, Pentium XE/Celeron D processors in LGA 775 package, 1333 / 1066 / 800 / 533 MHz system bus Four 240-pin DIMM sockets, designed to support up to 8 GB of DDR2 800/667/533 MHz Dual channel memory NV RAID supports 5 x SATA II 3.0 Gb/s ports RAID 0 or 1, 0+1, 5, JBOD is supported 1 x Ultra DMA 100 / 66 for up to 2 PATA devices