SUPERMICRO MBD-X8DTH-6F-O Dual LGA 1366 Intel 5520 Extended ATX Dual Intel Xeon Server Motherboard CPU Type: Supports up to two Intel 64-bit Xeon processor(s) of the same type below: Intel Xeon Processor 5600 Series (Westmere) Intel Xeon Processor 5500 Series (Nehalem-EP) QPI: Up to 6.4 GT/s South Bridge: Intel ICH10R Other Chipset: 2 x IOH-36D Number of DDR3 Slots: 12 x 240pin Maximum Memory Supported: Supports up to 192 GB 1333 / 1066 / 800MHz DDR3 ECC Registered memory Supports up to 48 GB 1333 / 1066 / 800MHz DDR3 ECC / Non ECC Unbuffered memory ECC Supported: Yes Registered: Yes