Asus P9X79 [Extra Memory Capacity Up To 64GB]
8 x DDR3 Slots (1066MHz-2400MHz) Up To 64GB
2 x SATA3 Ports, 4 x SATA2 Ports
3 x PCIe 3.0 x16 Slots
4 x USB 3.0 Ports, 14 x USB 2.0 Ports
Supports Quad AMD CrossFireX & nVidia SLI