Gigabyte GA-P35-DS3P Core2 P35 DDR2 Dual Channel DIMM Audio LAN Raid PCI&PCIE Motherboard Supports Intel Core 2 Extreme/Quad/2 Duo, Pentium D/4/Extreme processors, 1333/1066/800MHz system bus in the LGA775 package 4 x 240-pin DIMM, support max 8GB DDR2 1066/800/667MHz 2 x PCI Express x16 slot 3 x PCI Express x4 slot 2 x PCI slot