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Supermicro

Supermicro MBD-X12SPA-TF-B server motherboard LGA 4189 Intel C621A 16 DDR4 3200

SKU CH-KNAW-EMP46 MPN MBD-X12SPA-TF-B

Extended ATX server board with LGA 4189 socket, Intel C621A chipset, 16 DDR4 3200 slots supporting up to 4 TB ECC memory, four PCIe 4.0 x16 slots, eight SATA 6.0 Gb/s ports with RAID 0/1/5/10.

  • ProcessorSupports 3rd Gen Intel Xeon Scalable processors, Intel Xeon
  • Form factorExtended ATX
  • CPU socketLGA 4189
  • Network speed10/100/1000 Mbit/s
  • ChipsetIntel C621A
  • Number of DDR4 slots16 × 288-pin
  • Supports 3rd Gen Intel Xeon Scalable processors via LGA 4189 socket
  • 16 DDR4 3200 slots enable up to 4 TB ECC memory capacity
  • Four PCIe 4.0 x16 plus three PCIe 4.0 x8 slots for high-bandwidth expansion
  • Eight SATA 6.0 Gb/s ports with RAID 0/1/5/10 plus four M.2 PCIe 4.0 x4 interfaces
  • Triple 1 GbE LAN (Intel, Realtek, Marvell) plus Aspeed AST2500 remote management video

LGA 4189 server motherboard with 16 DDR4 slots

The Supermicro MBD-X12SPA-TF-B is an Extended ATX server motherboard built around the Intel C621A chipset. It accepts 3rd Gen Intel Xeon Scalable processors and Intel Xeon W-3300 processors in an LGA 4189 socket. Sixteen 288-pin slots support DDR4-3200 memory with ECC, scaling up to 4 TB using 3DS LRDIMM or RDIMM modules. The board ships in bulk packaging.

Suited for high-core-count compute and dense memory

This platform suits builders assembling multi-socket servers, render farms or database nodes that need maximum core density and large memory capacity. Four PCIe 4.0 x16 slots and three additional PCIe 4.0 x8 lanes provide extensive add-in card bandwidth. Eight SATA 6.0 Gb/s ports with RAID 0, 1, 5, 10 and four M.2 PCIe 4.0 x4 interfaces cover local storage needs. Buyers who require a smaller form factor or fewer memory channels should evaluate alternative platforms.

16 DDR4-3200 slots enabling 4 TB ECC memory

The decisive specification is the sixteen DDR4-3200 slots that allow up to 4 TB of 3DS ECC LRDIMM or RDIMM capacity. This density determines whether the board fits workloads such as in-memory databases, virtualisation hosts or scientific computing. Confirm that the chosen processor and memory kit match the 3DS ECC requirement before purchase.

How it compares

Measured against everything we stock in Server & Workstation Boards, at today’s prices. Recalculated every night.

Price $566.99
Pricier than about 85% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameSUPERMICRO
Model nameMBD-X12SPA-TF-B
Processor
ProcessorSupports 3rd Gen Intel Xeon Scalable processors, Intel Xeon W-3300 Processor
CPU socketLGA 4189
ChipsetIntel C621A
Memory
DDR4 memory supportDDR4 3200
Max supported RAMUp to 4 TB 3DS ECC LRDIMM, DDR4-3200 MHz; Up to 4 TB 3DS ECC RDIMM, DDR4-3200 MHz
ECC supportYes
Storage
SATA ports8 x SATA 6.0Gb/s
SATA and RAID support0/1/5/10
M.2 slotsInterface: 4 PCI-E 4.0 x4
Graphics
Onboard video chipAspeed AST2500
Connectivity
Network speed10/100/1000 Mbit/s
Ethernet controllerIntel I210-AT
Second LAN controllerRealtek RTL8211F PHY
Second LAN speed10/100/1000 Mbit/s
Third LAN chipsetMarvell AQC113
Third LAN speed10/100/1000 Mbit/s
Maximum network speed1 Gbit/s
Ports & slots
Number of DDR4 slots16 × 288-pin
PCIe 4.0 x16 slots4
Rear panel ports1 x COM (Serial Port) / 1 x D-Sub / 1 x USB 3.2 Gen 2 Type-C / 1 x USB 3.2 Gen 2 × 2 Type-C / 2 x USB 2.0/1.1 / 3 x LAN (RJ45) / 4 x USB 3.2 Gen 1
Size & build
Form factorExtended ATX
Width and length12 in × 13 in
Shipping weight1.84 kg
Package size457 × 337 × 89 mm
More details
PCI express x83 x PCI Express 4.0 x8 (in x16 slot)

Questions about this item

How do I install a 3rd Gen Intel Xeon Scalable processor into the LGA 4189 socket and what is the common alignment mistake?

Align the two notches on the processor with the socket keys, lower it straight down without tilting, then close the load plate and secure the lever; the step often missed is verifying both notches match before applying pressure.

What components on the MBD-X12SPA-TF-B will need replacement after extended operation?

The Aspeed AST2500 BMC firmware should be updated periodically, and the four system fan headers should be checked for dust buildup that can reduce cooling efficiency over time.

Which limit appears first when all sixteen DDR4-3200 slots are populated under sustained load?

The memory controller on the Intel C621A chipset may throttle speeds below 3200 MHz when all 16 DIMM slots are filled with 3DS ECC modules during continuous heavy workloads.

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