ASRock 990FX EXTREME6 Socket AM3+ AMD Quad CrossfireX & Sli SATA3&USB3.0 M.2 A&GbE ATX Motherboard Memory Standard:DDR3 2450(OC) / 2100(OC) / 1600 / 1333 / 1066 Channel Supported:Dual Channel Number of Memory Slots:4240pin Maximum Memory Supported:64GB Brand:ASRock