Supermicro MBD-X12DPI-N6-O dual LGA 4189 server motherboard 18 DDR4 slots 4TB

Dual LGA 4189 server board for memory-heavy

The Supermicro MBD-X12DPI-N6-O is an Extended ATX motherboard that accepts two 3rd Gen Intel Xeon Scalable processors in LGA 4189 sockets. Eighteen 288-pin DDR4 slots support up to 4TB of ECC RDIMM or LRDIMM at 3200 MHz, and two DIMM positions are reserved for Intel Optane Persistent Memory 200 Series. Four PCIe 4.0 x16 slots and two PCIe 4.0 x8 slots provide expansion for accelerators or networking cards.

Check chassis clearance

The board measures 12 by 13 inches and requires an Extended ATX compatible case with matching standoffs. Each CPU socket is rated for up to 270 W TDP, so the power supply and VRM cooling must handle dual high-wattage processors. Verify that your memory kit uses DDR4 3200 ECC modules; other DDR generations will not fit. The single M.2 slot accepts 2280 or 22110 form factors with M-key PCIe 4.0 x4 signalling.

Bundled interfaces add storage density

Fourteen SATA 6.0 Gb/s ports support RAID 0, 1, 5 and 10 without an extra controller. Dual Intel I350 controllers deliver two 1 Gbps Ethernet links for management or data traffic. The Aspeed AST2600 provides VGA output on both rear and front-panel headers plus a serial console. Five USB 3.2 Gen 1 ports and additional USB 2.0 headers simplify peripheral and flash-drive access during deployment.