SUPERMICRO MBD-H8DCL-6F-O ATX Server Motherboard Dual Socket C32 AMD SR5690 DDR3 1600/1333/1066 CPU Type: 2 x AMD Opteron 4000 Series (4300 ready) System Bus: HT3.0 Link support South Bridge: AMD SP5100 Number of DDR3 Slots: 8 x 240pin Maximum Memory Supported: 256GB Channel Supported: Dual Channel ECC Supported: Yes Registered: Yes