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Supermicro dual-socket LGA-4677 EATX server motherboard, green PCB with silver sockets and heatsinks

Supermicro

Supermicro MBD-X13DEI-T-O dual-socket LGA-4677 EATX server motherboard

SKU CH-NA9C-91KEN MPN MBD-X13DEI-T-O

Dual-socket EATX server board with 16 DDR5 slots, four PCIe 5.0 x16 slots and dual 10 GbE LAN

  • Processor4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
  • Form factorExtended ATX
  • CPU socketLGA 4677
  • Network speed10 Gbit/s
  • Supported CPU count2
  • Processor detailsUp to 350 W TDP
  • Dual Xeon sockets scale to 350W TDP each
  • 16 DDR5 slots support 4TB ECC memory
  • Four PCIe 5.0 x16 plus two x8 slots
  • Dual 10Gbps LAN with Broadcom BCM57416
  • Ten SATA 6Gb/s ports with RAID 0/1/5/10

Dual-socket Xeon server board

The Supermicro MBD-X13DEI-T-O is an Extended ATX motherboard built for dual LGA 4677 processors. It accepts 4th and 5th generation Intel Xeon Scalable CPUs with a combined thermal design power of up to 350 watts per socket. The Intel C741 chipset manages platform connectivity across the board.

Sixteen DDR5 slots and CXL support

The board provides sixteen 288-pin DDR5 slots running at 5600 MT/s with ECC, allowing up to 4 terabytes of registered memory. CXL capability is included for cache-coherent device attachment. Expansion consists of four PCIe 5.0 x16 slots and two PCIe 5.0 x8 slots for high-bandwidth add-in cards.

Dual 10 GbE and dense storage options

Networking is handled by a Broadcom BCM57416 controller delivering two 10 gigabit per second ports. Storage connectivity includes ten SATA 6 Gb/s ports with RAID 0, 1, 5 and 10 plus two M.2 slots using PCIe 4.0 x2 in 2280 and 22110 form factors. Aspeed AST2600 graphics provide basic display output for management.

How it compares

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

Price $773.99
Pricier than about 91% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameSUPERMICRO
Model nameMBD-X13DEI-T-O
Processor
Processor4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
CPU socketLGA 4677
Supported CPU count2
Processor detailsUp to 350 W TDP
ChipsetIntel C741
Memory
RAM slots16 x DDR5 288-pin
Supported memoryDDR5 5600
Max supported RAM4 TB
ECC supportYes
Storage
SATA ports10 x SATA 6.0Gb/s
SATA and RAID support0/1/5/10
M.2 slotsInterface: 2 PCIe 4.0 x2
Form Factor: 2280/22110
Key: M-Key
Graphics
Onboard video chipAspeed AST2600
Connectivity
Network speed10 Gbit/s
Ethernet controllerBroadcom BCM57416
Maximum network speed2 × 10 Gbit/s
Ports & slots
PCIe 5.0 x16 slots4 x PCIe 5.0 x16
Rear panel ports1 x COM (Serial Port) / 1 x D-Sub / 1 x USB 2.0/1.1 / 2 x LAN (RJ45) / 4 x USB 3.0
Size & build
Form factorExtended ATX
Width and length12.1 in × 13.05 in
Shipping weight2.31 kg
Package size432 × 330 × 89 mm
More details
PCI express x82 x PCIe 5.0 x8
BIOSAMI 32 MB AMI UEFI
ACPI 6.4
SMBIOS 2.8/3.5
UEFI 2.8A
Plug and Play (PnP)
PCI FW 3.2

Questions about this item

What chassis clearance and mounting pattern does the EATX form factor require?

The board uses the Extended ATX layout, so the case must provide EATX mounting holes and enough depth for the larger PCB footprint.

How are the two LGA-4677 processors seated, and what step is often missed?

Install each CPU into its LGA-4677 socket, then apply thermal interface material and attach a cooler rated for up to 350W TDP per socket; the step often missed is verifying both coolers are firmly secured before power-on.

Which memory modules will need replacing if capacity is expanded later?

The board has 16 DDR5 288-pin slots supporting DDR5-5600 ECC RDIMMs up to 4TB total; adding capacity means populating empty slots with matching DDR5-5600 ECC RDIMMs.

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