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Four green DDR5 RDIMM modules in a row, no heat spreaders, gold edge connectors visible

NEMIX RAM

NEMIX RAM DDR5 4800 ECC Registered RDIMM 256GB (4x64GB) CL40 1.1V 2Rx4 288-pin memory upgrade

SKU CH-NJ0T-X48KJ

A 256 GB DDR5 server memory kit of four 64 GB Registered ECC RDIMMs running at 4800 MT/s with CL40 latency and 1.1 V operation, validated for the GIGABYTE MZ73-LM2 motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 18 more
  • Registered ECC RDIMM prevents silent data corruption
  • 256GB kit (4 × 64GB) fills every slot at full capacity
  • DDR5-4800 CL40 at 1.10V matches controller specs
  • Verified fit for GIGABYTE MZ73-LM2 motherboard
  • Major OEM chips (Samsung, Micron, Hynix) ensure enterprise stability

Server-grade DDR5 memory kit

This NEMIX RAM kit supplies 256 GB of DDR5-4800 registered ECC memory in four 64 GB modules. It is built for the GIGABYTE MZ73-LM2 motherboard and matches the exact rank, voltage and timing the board's memory controller expects. The 2Rx4 RDIMM format ensures full-capacity recognition when all slots are populated.

Thermals noise and power draw

Modules run at the standard DDR5 voltage of 1.1 V and carry no heat spreaders, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping keep power draw predictable under sustained server workloads. Silent operation is inherent with no moving parts on the DIMMs themselves.

Upgrade path and fitment

The kit replaces partial or mismatched memory configurations that limit total capacity or prevent the board from running at its rated 4800 MT/s. It is not suited for systems that require unbuffered UDIMMs or SODIMMs, nor for boards that cannot accept 2Rx4 registered modules. Verify the motherboard manual for approved population order before installing.

How it compares

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

Price $6,443.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $25.17 per GB
Pricier than about 70% 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 numberMR38400-924K4
Total capacity256 GB (4 × 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 items256 GB 4 × 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

How do I install the 288-pin RDIMM modules on the GIGABYTE MZ73-LM2 motherboard, and what step is often missed?

Power down the server, open the chassis, align each 288-pin RDIMM with the keyed slot, press firmly until both retention clips click, then verify the population order in the MZ73-LM2 manual so all four 64 GB modules are recognised at 4800 MHz.

What maintenance or replacement will the 256 GB DDR5 ECC RDIMM kit need over its service life?

The modules have no moving parts and no heat spreaders to clean; ECC corrects single-bit errors automatically, so the only future action is replacing a DIMM if the server logs report uncorrectable errors.

What limit appears first when the 4×64 GB kit runs sustained workloads at 1.1 V?

The registered buffer and ECC logic keep signal integrity at full 4800 MT/s, so the first practical ceiling is the motherboard's maximum supported capacity rather than thermal or voltage headroom.

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