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Green extended ATX server motherboard with dual CPU sockets and sixteen DDR4 memory slots

GIGABYTE

GIGABYTE MD72-HB3 server motherboard, Dual Socket P+, 16 DDR4 3200 slots, 256GB max

SKU CH-N2QR-8AG44 MPN MD72-HB3

Extended ATX dual-socket board with 16 DDR4 3200 slots for up to 256 GB, four PCIe 4.0 x16 slots, 12 SlimSAS SATA ports and dual 1 GbE LAN

  • CPU Socket TypeDual Socket P+
  • CPU TypeSupports 3rd Generation Intel Xeon Scalable Processors
  • North BridgeIntel C621A
  • Number of DDR4 Slots16 x 288-pin
  • DDR4 StandardDDR4 3200
  • Maximum Memory Supported256GB
  • Dual Socket P+ enables two 3rd Gen Intel Xeon Scalable processors
  • 16 DDR4 3200 slots deliver 256GB maximum memory capacity
  • Four PCIe 4.0 x16 slots provide 64 lanes per CPU
  • Three SlimSAS connectors support 12 SATA 6Gb/s ports
  • Dual Intel I210-AT LAN plus dedicated management port

Dual Socket P+ Xeon platform

The GIGABYTE MD72-HB3 is an Extended ATX server motherboard built for dual 3rd Generation Intel Xeon Scalable processors. It provides sixteen DDR4 3200 slots with a maximum capacity of 256GB and supports Intel Optane Persistent Memory 200 series. Four PCIe 4.0 x16 slots and three SlimSAS connectors give high-throughput paths for GPUs, accelerators and dense storage arrays.

Power and chassis clearance checks

Verify that your chassis accepts the Extended ATX form factor and can route the 24-pin ATX, two 8-pin ATX 12V and one 6-pin PCIe power connectors. Confirm that your CPU coolers match the Socket P+ mounting pattern and that the power supply delivers sufficient current for two processors rated up to 270W each. Ensure back-panel cut-outs align with the two USB 3.0, VGA, COM, dual RJ45, dedicated management LAN and ID button ports.

Thermal, noise and power profile

With two CPUs installed the board draws power through three dedicated 12V connectors plus the main ATX feed, so VRM temperatures scale with the 105-270W processor range. Eight memory channels per socket mean fully populated DIMM slots increase airflow demand across the sixteen slots. The Aspeed AST2600 management controller and dual Intel I210-AT 1GbE ports add minimal heat, while fan headers for both CPUs and system zones allow tuned cooling curves for quieter operation under typical loads.

Highlights

  • Dual Socket P+ enables two 3rd Gen Intel Xeon Scalable processors
  • 16 DDR4 3200 slots deliver 256GB maximum memory capacity
  • Four PCIe 4.0 x16 slots provide 64 lanes per CPU
  • Three SlimSAS connectors support 12 SATA 6Gb/s ports
  • Dual Intel I210-AT LAN plus dedicated management port

Specifications

BrandGIGABYTE
ModelMD72-HB3
CPU Socket TypeDual Socket P+
CPU TypeSupports 3rd Generation Intel Xeon Scalable Processors
North BridgeIntel C621A
Number of DDR4 Slots16 x 288-pin
DDR4 StandardDDR4 3200
Maximum Memory Supported256GB
PCI Express 4.0 x16Slot_6: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_0
Slot_5: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_1
Slot_4: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_1
Slot_3: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_0
Slot_2: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_0
Slot_1: 1 x PCIe x16 (Gen4 x16 bus) slot, from CPU_1
SATA2 x 7-pin SATA 6Gb/s ports
SATA RAID0/1/10/5
SAS3 x SlimSAS with 12 x SATA 6Gb/s ports
M.22 x M.2 slots:
- M-key
- PCIe Gen4 x4 per slot
- Supports NGFF-22110/2280 cards
- From CPU
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel I210-AT
LAN Speed10/100/1000Mbps
Max LAN Speed1Gbps
Back I/O Ports2 x USB 3.0
1 x VGA
1 x COM (RJ45 type)
2 x RJ45
1 x MLAN
1 x ID button with LED
Other Connectors1 x 24-pin ATX main power connector
2 x 8-pin ATX 12V power connectors
1 x 6-pin PCIe power connectors
3 x SlimSAS connectors
2 x 7-pin SATA connectors
2 x M.2 slots
1 x HDD back plane board header
2 x CPU fan headers
5 x System fan headers
1 x USB 3.0 header
1 x TPM header
1 x VROC connector
1 x Front panel header
1 x PMBus connector
1 x IPMB connector
1 x Clear CMOS jumper
1 x BIOS recovery jumper
1 x Case open header
Form FactorExtended ATX
Dimensions (W x L)12" x 13"
Package Contents1 x MD72-HB1
1 x I/O shield
1 x Quick start guide
1 x SlimSAS for 4 x SATAIII 6Gb/s cables
Shipping weight2.27 kg
Package size406 × 356 × 76 mm

Questions about this item

What comes in the box with the MD72-HB3 motherboard and what must be purchased separately?

The board includes the Extended ATX motherboard itself. You must buy two Socket P+ Xeon processors, up to 16 DDR4 3200 RDIMM or LRDIMM modules, storage drives for the SATA or SlimSAS ports, M.2 2280 or 22110 cards, and all required power cables for the 24-pin, 8-pin and 6-pin connectors.

How do I choose between the available memory configurations for the 16 DDR4 slots?

Each processor provides eight channels. Populate all 16 slots with identical DDR4 3200 modules for maximum 256 GB capacity and balanced performance, or use fewer matched pairs per channel if less memory is needed.

What does the 256 GB maximum memory figure mean once the board is installed in a server?

With two processors fitted, the 16 slots can hold up to 256 GB of DDR4 3200 memory, delivering eight channels per CPU for high-throughput workloads.

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