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Green extended ATX server motherboard with dual LGA 6096 sockets and twenty-four DIMM slots

GIGABYTE

GIGABYTE MZ73-LM1 server motherboard dual EPYC 9004/9005 24 DIMM 10G LAN

SKU CH-053Z-G7QMS MPN MZ73-LM1

E-ATX server board for dual AMD EPYC 9004/9005 CPUs with 24 DDR5 DIMM slots and dual 10Gbps LAN

  • ProcessorAMD EPYC 9004 Series
  • Form factorExtended ATX
  • CPU socket2 x LGA 6096
  • Network speed10 Gbit/s
  • Supported CPU count2
  • Max supported RAM3DS RDIMM modules up to 256 GB supported

Model MZ73-LM1

  • Dual AMD EPYC 9004/9005 processors deliver up to 192 cores total
  • 12-channel DDR5 memory with 24 DIMM slots supports 3DS RDIMM modules up to 256GB each
  • Two 10Gbps LAN ports via Broadcom BCM57416 enable high-speed network connectivity
  • Four PCIe Gen4 x16 expansion slots provide extensive add-in card capacity
  • Dual SlimSAS 8i connectors with PCIe Gen4 x8 or SATA plus one SlimSAS 4i SATA connector offer flexible storage options

Dual-socket SP5 server board for EPYC 9004 and 9005

The GIGABYTE MZ73-LM1 is an Extended ATX motherboard built for two AMD EPYC processors using the LGA 6096 socket. It targets data-centre workloads that demand high core counts and large memory capacity. The board ships new and supports cTDP up to 400W per processor.

12-channel DDR5 with 24 DIMM slots

Memory scales to 256GB per 3DS RDIMM across 24 slots, delivering 12 channels per CPU. Four PCIe Gen4 x16 slots provide add-in card bandwidth, while two SlimSAS 8i connectors each carry PCIe Gen4 x8 or SATA, and a single SlimSAS 4i adds SATA. One M.2 slot runs at PCIe Gen4 x4.

Dual 10GbE LAN and Aspeed AST2600 management

Two Broadcom BCM57416 ports give 10Gbps Ethernet without an extra card. The Aspeed AST2600 controller handles remote management and basic video output. Two USB 3.2 Gen1 ports and the E-ATX form factor at 304.8mm by 335.2mm fit standard server chassis. Builders needing more than two network links or a different form factor should look elsewhere.

How it compares

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

Price $845.99
Pricier than about 91% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameGIGABYTE
Model nameMZ73-LM1
Part numberMZ73-LM1
Processor
ProcessorAMD EPYC 9004 Series
CPU socket2 x LGA 6096
Supported CPU count2
Memory
Max supported RAM3DS RDIMM modules up to 256 GB supported
Graphics
Onboard video chipAspeed AST2600
Connectivity
Network speed10 Gbit/s
Number of LAN2
Ethernet controllerBroadcom® BCM57416
Maximum network speed10 Gbit/s
Ports & slots
USB 3.22 x USB 3.2 Gen1
Power
Built-in batteryNo
Size & build
Form factorExtended ATX
Width and length304.8 W × 335.2D (mm)
Shipping weight2.27 kg
Package size361 × 356 × 76 mm

Other versions of this model

2 more in the same range

Questions about this item

Should I choose the 9004 or 9005 series EPYC processors for this dual-socket board?

Both the 9004 and 9005 series are supported on the SP5 socket. The 9005 series uses a 3nm process with Zen 5 and Zen 5c cores, offering up to 192 cores and 512MB L3 cache for higher compute density and efficiency.

What does the 12-channel DDR5 memory architecture deliver in a populated system?

With 24 DIMM slots across two processors, the board supports 12 memory channels per CPU. Using 3DS RDIMM modules up to 256GB each, this architecture maximises bandwidth and capacity for memory-intensive workloads.

How does the PCIe Gen4 interface on the SlimSAS and M.2 connectors limit storage performance?

The 2 x SlimSAS 8i connectors run at PCIe Gen4 x8 or SATA, the SlimSAS 4i is SATA only, and the M.2 slot uses PCIe Gen4 x4. These lane allocations cap maximum drive throughput to Gen4 speeds.

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