SUPERMICRO MBD-H8SGL-O ATX Server Motherboard Socket G34 AMD SR5650 DDR3 1600/1333/1066 CPU Type: AMD Opteron Interlagos 6200 series AMD Opteron 6100 Series 8/12-Core System Bus: HT3.0 Link support South Bridge: AMD SP5100 Number of DDR3 Slots: 8 x 240pin Maximum Memory Supported: 128GB ECC Supported: Yes Registered: Yes PCI Express x16: 1 (@ x8 speed)