CPU AMD Socket AM3 ;PhenomII /AthlonII /Sempron 100 Series Processors AMD 140W CPU Support AMD Cool 'n' Quiet Technology Supports 45nm CPU Chipset AMD 870 / SB850 System Bus Up to 5200 MT/s ; HyperTransport 3.0 interface Memory 4 x DIMM, Max. 16 GB, DDR3 2000(O.C.)/1600/1333/1066 ECC,Non-ECC,Un-buffered Memory ...