AMD HDZ965FBGIBOX Phenom II X4 965 3.4GHZ Central Processing Unit (Black) AM3 Socket 140 watts power Cache Memory - L2 = 4 x 512KB / L3 = 6 MB shared 4.0GT/s Hypertransport Memory Controller: Dual Channel PC3-10667U (DDR3-1333) for 2 module, Dual Channel PC3-8500U (DDR3-1066), Dual Channel PC2-8500U (DDR2-1066)