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Green ATX server board, silver LGA 4189 socket, eight black DDR4 slots, dual 10GbE RJ45 ports

Supermicro

Supermicro MBD-X12SPI-TF-O LGA 4189 ATX server motherboard

SKU CH-EFTA-ND1KS MPN MBD-X12SPI-TF-O

ATX server board for 3rd Gen Intel Xeon Scalable CPUs with eight DDR4-3200 slots, dual 10 GbE, and ten SATA ports

  • CPU Socket TypeLGA 4189
  • CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
  • North BridgeIntel C621A
  • Number of DDR4 Slots8 x 288-pin
  • DDR4 StandardDDR4 3200
  • Maximum Memory Supported2TB
  • Supports 3rd Gen Intel Xeon Scalable processors up to 270W TDP
  • Eight DDR4 3200 slots deliver up to 2TB memory capacity
  • Dual 10Gbps Intel X550 LAN ports for high-speed networking
  • Two PCIe 4.0 x16 plus three PCIe 4.0 x8 expansion slots
  • Ten SATA 6.0Gb/s ports with RAID 0/1/5/10 and M.2 PCIe 3.0 x4

Socket P+ server board

The Supermicro MBD-X12SPI-TF-O is an ATX motherboard for single-socket Intel Xeon Scalable processors using the LGA 4189 socket. It targets builders who need a compact platform for 3rd Gen Xeon CPUs with up to 270 W TDP. The Intel C621A chipset manages I/O across the board. It is not suited for dual-socket configurations or processors that require a different socket.

Eight DDR4 slots and mixed PCIe 4.0 lanes

Eight 288-pin slots accept DDR4 3200 RDIMM or LRDIMM up to 2 TB total, plus Intel Optane Persistent Memory 200 Series. Expansion includes two PCIe 4.0 x16 slots, two PCIe 4.0 x8 slots and one PCIe 4.0 x8 wired into an x16 slot. Storage connectivity covers ten SATA 6.0 Gb/s ports with RAID 0, 1, 5, 10 and one M.2 M-key slot supporting 2280 or 22110 drives on SATA or PCIe 3.0 x4.

Dual 10 GbE and basic video

Networking relies on two Intel X550 controllers delivering two RJ45 ports at 10 Gbps each. Rear I/O adds two USB 2.0 and three USB 3.2 Gen 1 ports, while internal headers provide two more of each. The Aspeed AST2600 provides basic 2D display output for management consoles. The board lacks onboard Wi-Fi, Bluetooth or additional high-speed networking beyond the two 10 GbE links.

Highlights

  • Supports 3rd Gen Intel Xeon Scalable processors up to 270W TDP
  • Eight DDR4 3200 slots deliver up to 2TB memory capacity
  • Dual 10Gbps Intel X550 LAN ports for high-speed networking
  • Two PCIe 4.0 x16 plus three PCIe 4.0 x8 expansion slots
  • Ten SATA 6.0Gb/s ports with RAID 0/1/5/10 and M.2 PCIe 3.0 x4

Specifications

BrandSUPERMICRO
ModelMBD-X12SPI-TF-O
CPU Socket TypeLGA 4189
CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
North BridgeIntel C621A
Number of DDR4 Slots8 x 288-pin
DDR4 StandardDDR4 3200
Maximum Memory Supported2TB
PCI Express 4.0 x162
PCI Express x82 x PCI Express 4.0 x8
1 x PCI Express 4.0 x8 (in x16 slot)
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 X550
LAN Speed10Gbps
Second LAN ChipsetIntel X550
Second LAN Speed10Gbps
Max LAN Speed2 x 10Gbps
RJ452 x RJ45
USB 1.1/2.02 x USB 2.0
USB 3.03 x USB 3.2 Gen 1 ports (2 rear + 1 Type A)
Onboard USB2 x USB 2.0 via headers
2 x USB 3.2 Gen 1 via headers
Form FactorATX
Dimensions (W x L)12.1" x 10"
Shipping weight1.72 kg
Package size460 × 371 × 88 mm

Questions about this item

Will the LGA 4189 socket need any special maintenance when paired with a 270W TDP processor?

The socket itself requires no scheduled maintenance, but a 270W TDP CPU demands robust active cooling and clean airflow to avoid thermal throttling over time.

What is the first limit reached when all eight DDR4 3200 slots are populated with 2TB of memory?

Memory capacity tops out at 2TB across the eight 288-pin slots, so total RAM is the hard ceiling before any other resource is exhausted.

How much heat do the dual Intel X550 10GbE controllers add during all-day operation?

The two X550 controllers draw modest power; combined with the Aspeed AST2600 and PCH, they contribute measurable but manageable heat that standard server chassis airflow handles.

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