ASUS RS120-E5/PA2 Barebone System - Intel 3200 - Socket T - Core 2 Duo (Dual-core), Xeon (Dual-core), Core 2 Extreme (Dual-core), Core 2 Extreme (Quad-core), Core 2 Quad (Quad-core), Xeon (Quad-core) - 1333MHz, 1066MHz, 800MHz Bus Speed - 8GB Memory Suppo: