Asus M4A79 DELUXE Socket AM2+ AM3/ AMD 790FX/ Quad CrossFireX/A&GbE/ATX Motherboard Form Factor - ATX Form Factor (12 in. x 9.6 in.) CPU - AMD AM3/AM2+/AM2 ;Phenom II /Athlon II /Phenom / Athlon /Sempron Processors; Support 45nm Phenom II CPU Chipset - AMD 790FX/SB750 System Bus - Up to 5200 MT/s HyperTransport 3.0 interface for AM3 / AM2+ CPU; 2000 / 1600 MT/s for AM2 CPU Memory - 4 x DIMM, Max. 16 GB, DDR2 1300(O.C.)/1200(O.C.)/1066/800/667 ECC,Non-ECC,Un-buffered Memory (Dual Channel memory architecture)