Cpu amd am3 fxphenom iiathlon iisempron 100 series processors supports am3 32 nm cpu supports cpu up to 8 cores supports cpu up to 140 w amd cool n quiet technology chipset amd 990fxsb950 memory 4 x dimm max 32gb ddr3 2400oc2133oc2000oc1800oc160013331066 mhz ecc non ecc un buffered memory dual channel memory architecture refer to wwwasuscom or user manual for the memory qvl qualified vendors lists due to os limitation when installing total memory of 4