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Green E-ATX server motherboard with dual LGA 4677 sockets and sixteen DDR5 slots

GIGABYTE

GIGABYTE MS73-HB0 E-ATX server motherboard dual LGA 4677 16 DDR5 5600 10G LAN

SKU CH-J96P-S9CEK MPN MS73-HB0

Dual-socket E-ATX board for 4th/5th Gen Intel Xeon Scalable CPUs with 16 DDR5 5600 slots, 10G LAN, and PCIe 5.0 expansion

  • CPU Socket TypeLGA 4677
  • CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
  • Number of Processor Support2
  • CPU FeaturesDual processor, TDP up to 270W Note: If only 1 CPU is instal
  • North BridgeIntel C741
  • Memory Slots16 x DDR5 288-pin
  • Dual Intel Xeon Scalable processors handle heavy workloads
  • 16 DDR5 5600 slots support up to 4TB registered memory
  • PCIe 5.0 x16 slots deliver high bandwidth for accelerators
  • Dual 10Gbps LAN plus 1Gbps management port
  • 3 SlimSAS connectors enable 12 SATA 6Gbps drives

Dual-socket Xeon server board

The GIGABYTE MS73-HB0 is an E-ATX motherboard built for dual LGA 4677 processors. It supports 4th and 5th Gen Intel Xeon Scalable CPUs with a TDP up to 270W each. The Intel C741 chipset provides the platform foundation for compute-intensive workloads.

Sixteen DDR5 slots and high-speed networking

Sixteen 288-pin DDR5 5600 registered DIMM slots deliver up to 4TB of memory across eight channels. Networking includes two 10Gbps ports driven by a Broadcom BCM57416 controller plus two 1Gbps Intel I210-AT ports. Storage connectivity covers two SATA 6.0Gb/s ports, three SlimSAS connectors for twelve SATA drives, and two M.2 slots with PCIe 4.0 x4 from CPU 0 supporting 2280 and 22110 cards.

Five PCIe 5.0 x16 slots for accelerator density

Five full-length PCIe 5.0 x16 slots split between the two CPUs give maximum bandwidth for GPUs or NVMe add-in cards. The Aspeed AST2600 provides basic video output for management. Builders needing more than two processors or requiring onboard Wi-Fi will need a different platform.

Highlights

  • Dual Intel Xeon Scalable processors handle heavy workloads
  • 16 DDR5 5600 slots support up to 4TB registered memory
  • PCIe 5.0 x16 slots deliver high bandwidth for accelerators
  • Dual 10Gbps LAN plus 1Gbps management port
  • 3 SlimSAS connectors enable 12 SATA 6Gbps drives

Specifications

BrandGIGABYTE
ModelMS73-HB2
CPU Socket TypeLGA 4677
CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
Number of Processor Support2
CPU FeaturesDual processor, TDP up to 270W
Note: If only 1 CPU is installed, some PCIe or memory functions might be unavailable.
North BridgeIntel C741
Memory Slots16 x DDR5 288-pin
Memory StandardDDR5 5600
Maximum Memory Supported4TB
RegisteredYes
PCI Express 5.0 x16Slot_6: PCIe x16 (Gen5 x16) slot, from CPU_0
Slot_5: PCIe x16 (Gen5 x16) slot, from CPU_1
Slot_4: PCIe x16 (Gen5 x16) slot, from CPU_1
Slot_3: PCIe x16 (Gen5 x16) slot, from CPU_0
Slot_2: PCIe x16 (Gen5 x16) slot, from CPU_0
Slot_1: PCIe x16 (Gen5 x16) slot, from CPU_1
SATA2 x SATA 6.0Gb/s
SAS3 x SlimSAS connectors for 12 x SATA 6Gb/s
M.22 x M.2 slots:
- M-key
- PCIe Gen4 x4, from CPU_0
- Support 2280/22110 cards
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel X710-AT2
LAN Speed10Gbps
Second LAN ChipsetIntel I210-AT
Second LAN Speed10/100/1000Mbps
Max LAN Speed2 x 10Gbps + 2 x 1Gbps
Back I/O Ports2 x USB 3.2 Gen 1
1 x VGA
1 x RJ45 serial port
4 x RJ45
1 x MLAN
1 x ID button with LED
Onboard USB1 x USB 3.2 Gen1 header
Other Connectors1 x 24-pin ATX main power connector
2 x 8-pin ATX 12V power connectors
2 x 6-pin ATX 12V power connectors
2 x CPU fan headers
4 x System fan headers
2 x M.2 slots
3 x SlimSAS connectors
2 x SATA connectors
1 x VROC connector
1 x Front panel header
1 x Backplane board header
1 x PMBus header
1 x IPMB header
1 x TPM header
Form FactorExtended ATX
Dimensions (W x L)12" x 13"
Package Contents1 x MS73-HB0
1 x I/O shield
1 x Quick start guide
6 x Carriers
1 x SlimSAS to 4 x SATA 6Gb/s cable (600mm)
Shipping weight2.31 kg
Package size406 × 356 × 76 mm

Questions about this item

How does the dual LGA 4677 interface affect maximum CPU power?

Each socket supports 4th or 5th Gen Intel Xeon Scalable processors with a TDP up to 270W, so the platform can handle two high-wattage CPUs simultaneously.

What chassis clearance and mounting pattern does this E-ATX board require?

The board uses the Extended ATX form factor; it needs a case that accepts E-ATX dimensions and standard ATX screw locations.

What is the correct CPU and memory population order for dual-processor operation?

Install both CPUs first, then populate all 16 DDR5 RDIMM slots across the eight channels per CPU; with only one CPU fitted some PCIe and memory functions are unavailable.

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