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Green extended ATX server motherboard with dual SP3 sockets, sixteen DDR4 slots, five PCIe x16 slots, two 10GbE ports

GIGABYTE

GIGABYTE MZ72-HB2 dual EPYC 7002/7003 server motherboard 16 DDR4 4TB

SKU CH-R831-FCZA6 MPN MZ72-HB2

Dual-socket SP3 board for AMD EPYC 7002 and 7003 CPUs with 16 DDR4-3200 slots up to 4TB, five PCIe 4.0 expansion slots, dual 10GbE LAN and multiple SATA, SAS and M.2 storage connections

  • CPU Socket TypeSocket SP3
  • CPU TypeAMD EPYC 7002 Series / AMD EPYC 7003 Series
  • Number of Processor Support2
  • CPU FeaturesDual processor, 7nm technology Up to 64 cores, 128 threads p
  • Number of DDR4 Slots16 x 288-pin
  • DDR4 StandardDDR4 3200
  • Dual EPYC 7002/7003 processors deliver up to 64 cores and 128 threads per socket
  • 16 DDR4 slots in eight-channel configuration support up to 4TB registered memory
  • Two 10Gbps LAN ports via Broadcom BCM57416 provide high-speed network connectivity
  • Five PCIe 4.0 expansion slots include three x16 and two x8 for GPU or accelerator cards
  • One M.2 slot with PCIe 4.0 x4 plus five SlimSAS connectors enable Gen4 NVMe and SATA storage

Dual-Socket EPYC Server Board

The GIGABYTE MZ72-HB2 is an Extended ATX motherboard built for dual AMD EPYC 7002 and 7003 series processors in Socket SP3. It targets high-performance computing clusters, virtualisation hosts and data-analytics nodes that need maximum core density and memory capacity in a two-socket design.

PCIe 4.0 Lane Distribution Limits

Five full-length slots provide Gen4 connectivity, but bandwidth depends on which CPU populates them. Three slots run at x16 from CPU_0 and CPU_1, while two operate at x8 from CPU_0. SlimSAS connectors add either Gen4 NVMe or SATA lanes, yet enabling NVMe requires a BIOS change that reassigns those lanes away from SATA.

4TB Eight-Channel DDR4 Ceiling

Sixteen 288-pin slots support registered DDR4-3200 modules across eight channels per socket, reaching 4TB total when fully populated with high-capacity LRDIMMs. Builds using standard RDIMMs or fewer modules will stop well short of this ceiling, so memory planning must match the target capacity from the start.

Highlights

  • Dual EPYC 7002/7003 processors deliver up to 64 cores and 128 threads per socket
  • 16 DDR4 slots in eight-channel configuration support up to 4TB registered memory
  • Two 10Gbps LAN ports via Broadcom BCM57416 provide high-speed network connectivity
  • Five PCIe 4.0 expansion slots include three x16 and two x8 for GPU or accelerator cards
  • One M.2 slot with PCIe 4.0 x4 plus five SlimSAS connectors enable Gen4 NVMe and SATA storage

Specifications

BrandGIGABYTE
ModelMZ72-HB2 Rev 3.x
Part Number9MZ72HB2MR-00-3
CPU Socket TypeSocket SP3
CPU TypeAMD EPYC 7002 Series / AMD EPYC 7003 Series
Number of Processor Support2
CPU FeaturesDual processor, 7nm technology
Up to 64 cores, 128 threads per processor
TDP up to 280W
Number of DDR4 Slots16 x 288-pin
DDR4 StandardDDR4 3200
Maximum Memory Supported4TB
Channel SupportedEight Channel
RegisteredYes
PCI Express 4.0 x16Slot_6: PCIe x16 (Gen4 x16) slot, from CPU_0
Slot_4: PCIe x16 (Gen4 x16) slot, from CPU_0
Slot_3: PCIe x16 (Gen4 x16) slot, from CPU_1
Slot_2: PCIe x16 (Gen4 x8) slot, from CPU_0
Slot_1: PCIe x16 (Gen4 x8) slot, from CPU_1
SATACPU_0: 4 x SATA 6Gb/s ports
CPU_1: 12 x SATA 6Gb/s
SASCPU_0: 2 x SlimSAS connectors for 2 x Gen4 NVMe
CPU_1: *3 x SlimSAS connectors for 3 x Gen4 NVMe or 12 x SATA 6Gb/s
*To enable NVMe support, please navigate to the BIOS Setup section, then proceed to Advances > PCI Subsystem settings.
M.21 x M.2 slot:
- M-key
- PCIe Gen4 x4, from CPU_0
- Supports 2280/22110 cards
Onboard Video ChipsetAspeed AST2600
LAN ChipsetBroadcom BCM57416
LAN Speed10Gbps
Max LAN Speed2 x 10Gbps
Back I/O Ports2 x USB 3.0
1 x VGA
1 x COM
2 x RJ45
1 x MLAN
1 x ID button with LED
Onboard USB1 x USB 3.0 header
1 x USB 2.0 header
Other Connectors1 x 24-pin ATX main power connector
2 x 8-pin ATX 12V power connectors
2 x CPU fan headers
4 x System fan headers
1 x M.2 slot
5 x SlimSAS connectors
4 x SATA connectors
1 x Front panel header
1 x Backplane board header
1 x PMBus connector
1 x IPMB connector
1 x TPM header
Form FactorExtended ATX
Dimensions (W x L)12" x 13"
Package Contents1 x MZ72-HB2
1 x I/O shield
1 x Quick start guide
2 x SATA 6Gb/s cables (500mm)
Shipping weight2.22 kg
Package size406 × 356 × 81 mm

Questions about this item

Which memory configuration reaches the 4 TB maximum on this board?

Populate all 16 DDR4 3200 registered DIMM slots with supported modules; the eight-channel architecture across both CPUs enables the full 4 TB capacity.

What does the 10 Gbps LAN rating deliver in a live server?

Two Broadcom BCM57416 ports each run at 10 Gbps, giving 20 Gbps aggregate throughput for high-speed storage or cluster links.

How do the PCIe 4.0 slots and SlimSAS connectors share the CPU lanes?

CPU 0 provides three x16 slots, one x8 slot, four SATA ports, two SlimSAS for NVMe and one M.2 x4; CPU 1 adds two x16 slots, one x8 slot, twelve SATA ports and three SlimSAS for NVMe or SATA.

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