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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB 2x64GB DDR5 4800 CL40 2Rx4 ECC RDIMM GIGABYTE MZ73-LM2 memory upgrade

SKU CH-GNZY-E4BP5

128GB DDR5 4800 ECC registered RDIMM kit validated for the Gigabyte MZ73-LM2 server motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 18 more
  • 128 GB total capacity from a matched 2 × 64 GB kit
  • DDR5-4800 speed with CL40 latency at 1.1 V
  • Registered ECC design corrects single-bit errors and buffers the memory bus
  • 288-pin RDIMM form factor built for the GIGABYTE MZ73-LM2 motherboard
  • 2Rx4 dual-rank organisation enables full-capacity population across all slots

Exact-Match DDR5 Server Upgrade

This 128 GB kit delivers two 64 GB DDR5 RDIMMs built for the GIGABYTE MZ73-LM2 motherboard. Registered ECC design meets the board's population rules so every slot runs at its rated 4800 MT/s without manual tuning. It targets administrators who need guaranteed recognition at full capacity.

Capacity and Headroom

Dual-rank 2Rx4 organisation lets the memory controller address the full 128 GB across both modules at 1.1 V. CL40 latency and PC5-38400 bandwidth suit virtualisation hosts and database nodes that scale horizontally. Workloads demanding higher per-thread bandwidth or lower latency will saturate this kit first.

Registered ECC Over Unbuffered

The RDIMM form factor replaces standard UDIMMs that lack buffering and error correction. Registered architecture offloads the controller so all slots stay stable when fully populated, while ECC corrects single-bit errors before they reach production. Builders needing consumer UDIMM pin-outs or non-ECC operation cannot use this kit.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $3,119.99
Pricier than about 73% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $24.37 per GB
Pricier than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGIGABYTE
In the box
Included items128 GB 2 × 64 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 2Rx4 registered ECC DDR5-4800 modules run at full speed alongside existing DDR5-4800 RDIMMs in my Gigabyte MZ73-LM2?

Yes, this kit matches the board's DDR5-4800 PC5-38400 spec, 1.1V voltage, CL40 timing and 2Rx4 registered ECC layout, so fully populated slots will operate at rated speed.

How can I confirm the 128 GB kit is recognised at full capacity and running at DDR5-4800 CL40 after installation?

Check the BIOS memory information screen — it should show 128 GB total, DDR5-4800 (PC5-38400) frequency, CL40 latency and ECC registered status for each 64 GB module.

Does the package contain only the two 64 GB RDIMMs or are any cables, brackets or tools included?

The box contains only the two 64 GB DDR5-4800 CL40 2Rx4 ECC registered RDIMMs; no cables, brackets or tools are supplied.

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