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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

  • CPU Socket TypeLGA 4677
  • CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
  • Number of Processor Support2
  • CPU FeaturesUp to 350W TDP
  • North BridgeIntel C741
  • Memory Slots16 x DDR5 288-pin
  • 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.

Highlights

  • 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

Specifications

BrandSUPERMICRO
ModelMBD-X13DEI-T-O
CPU Socket TypeLGA 4677
CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
Number of Processor Support2
CPU FeaturesUp to 350W TDP
North BridgeIntel C741
Memory Slots16 x DDR5 288-pin
Memory StandardDDR5 5600
Maximum Memory Supported4TB
ECC SupportedYes
PCI Express 5.0 x164 x PCIe 5.0 x16
PCI Express x82 x PCIe 5.0 x8
SATA10 x SATA 6.0Gb/s
SATA RAID0/1/5/10
M.2M.2 Interface: 2 PCIe 4.0 x2
Form Factor: 2280/22110
Key: M-Key
Onboard Video ChipsetAspeed AST2600
LAN ChipsetBroadcom BCM57416
LAN Speed10Gbps
Max LAN Speed2 x 10Gbps
Back I/O 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
Other Connectors3 MCIO PCIe 5.0 x8
BIOS FeatureAMI 32MB AMI UEFI
ACPI 6.4
SMBIOS 2.8/3.5
UEFI 2.8A
Plug and Play (PnP)
PCI FW 3.2
Form FactorExtended ATX
Dimensions (W x L)12.1" x 13.05"
Shipping weight2.31 kg
Package size432 × 330 × 89 mm

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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