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Green Micro ATX server motherboard with eight DDR4 slots and four rear RJ45 ports

Supermicro

Supermicro MBD-X12SPM-LN4F-O server motherboard

SKU CH-YGTH-MXT64 MPN MBD-X12SPM-LN4F-O

Micro ATX board for a single 3rd Gen Xeon with eight DDR4-3200 slots up to 2 TB, dual PCIe 4.0 x16, one x8, ten SATA, one M.2 and four gigabit LAN ports

  • CPU Socket TypeSocket P+
  • CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
  • North BridgeIntel C621A
  • Number of DDR4 Slots8 x 288-pin
  • DDR4 StandardDDR4 3200
  • Maximum Memory SupportedUp to 2TB 3DS ECC RDIMM, DDR4-3200MHz; Up to 2TB 3DS ECC LRD
  • Supports 3rd Gen Intel Xeon Scalable processors in Socket P+
  • Eight DDR4-3200 slots scale to 2 TB ECC RDIMM or LRDIMM
  • Two PCIe 4.0 x16 and one PCIe 4.0 x8 for high-speed add-in cards
  • Ten SATA 6.0 Gb/s ports with RAID 0/1/5/10 for dense storage arrays
  • Four gigabit LAN ports plus Aspeed AST2600 video for remote management

Micro ATX Xeon Server Board

This Supermicro motherboard uses the Intel C621A chipset and an LGA-4189 Socket P+ for single 3rd Gen Intel Xeon Scalable processors up to 270 W TDP. It fits the Micro ATX footprint of 9.6" x 9.6" and provides eight 288-pin DDR4 slots supporting up to 2 TB of 3200 MHz ECC RDIMM, LRDIMM or Optane Persistent Memory 200 Series. The board is aimed at builders assembling dense 1U or tower servers that need high core counts in a compact chassis.

Not for Dual-Socket or ATX Builds

The single-socket design cannot accommodate dual-processor configurations, so clusters requiring two CPUs per node should choose a different platform. The Micro ATX layout also limits expansion to three PCIe 4.0 slots and omits the extra DIMM channels found on full-size ATX or E-ATX server boards. Buyers needing more than one M.2 slot, 10 GbE onboard, or a larger slot count must look elsewhere.

Eight DDR4 Slots Decide Capacity

Eight 288-pin DDR4-3200 slots set the absolute memory ceiling at 2 TB using 3DS ECC RDIMM, LRDIMM or Intel Optane Persistent Memory 200 Series modules. Population rules for maximum capacity depend on the specific processor SKU and DIMM rank configuration, so verify the CPU memory-controller limits before purchasing memory kits.

Highlights

  • Supports 3rd Gen Intel Xeon Scalable processors in Socket P+
  • Eight DDR4-3200 slots scale to 2 TB ECC RDIMM or LRDIMM
  • Two PCIe 4.0 x16 and one PCIe 4.0 x8 for high-speed add-in cards
  • Ten SATA 6.0 Gb/s ports with RAID 0/1/5/10 for dense storage arrays
  • Four gigabit LAN ports plus Aspeed AST2600 video for remote management

Specifications

BrandSUPERMICRO
ModelMBD-X12SPM-LN4F-O
CPU Socket TypeSocket P+
CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
North BridgeIntel C621A
Number of DDR4 Slots8 x 288-pin
DDR4 StandardDDR4 3200
Maximum Memory SupportedUp to 2TB 3DS ECC RDIMM, DDR4-3200MHz; Up to 2TB 3DS ECC LRDIMM, DDR4-3200MHz
Up to 2TB Intel Optane Persistent Memory 200 Series, in 8 DIMM slots
ECC SupportedYes
PCI Express 4.0 x162
PCI Express x81 x PCI Express 4.0 x8
SATA10 x SATA 6.0Gb/s
SATA RAID0/1/5/10
M.2M.2 Interface: 1 SATA/PCI-E 3.0 x4
Form Factor: 2280, 22110
Key: M-Key
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel I350-AM4
LAN Speed10/100/1000Mbps
Back I/O Ports4 x RJ45 Gigabit Ethernet LAN ports
6 x USB 2.0 ports (2 rear + 4 via headers)
5 x USB 3.2 Gen1 ports (2 rear + 2 via headers + 1 Type A)
1 x VGA port
1 x COM Port (1 header)
TPM Header
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Shipping weight2.27 kg
Package size330 × 330 × 64 mm

Questions about this item

How do I install a 3rd Gen Intel Xeon Scalable processor into the Socket P+ (LGA-4189) without bending pins?

Align the processor triangle with the socket corner, lower it vertically into the LGA-4189 Socket P+ without forcing, close the load plate, then torque the four captive nuts in a cross pattern to the specified pressure.

What maintenance will the M.2 slot and the eight DDR4 DIMM slots need over time?

The M.2 2280/22110 M-Key slot accepts SATA or PCI-E 3.0 x4 drives that may be replaced when capacity or endurance limits are reached; the eight 288-pin DDR4 slots hold 3DS ECC RDIMM or LRDIMM modules that can be upgraded to the 2TB maximum.

Which limit appears first when all four 1GbE ports and ten SATA 6.0Gb/s drives run sustained workloads?

The Intel I350-AM4 controller caps each RJ45 port at 1Gbps, so aggregate network throughput saturates before the ten SATA 6.0Gb/s ports or the two PCI-E 4.0 x16 slots reach their bandwidth ceilings.

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