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Four green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM MR38400-9624K4 384GB (4x96GB) DDR5-4800 CL40 ECC Registered RDIMM memory upgrade

SKU CH-WCQH-QX0B2

384 GB DDR5-4800 ECC registered RDIMM kit (4 × 96 GB, CL40, 1.1 V) validated for the Gigabyte MZ73-LM1 motherboard

  • Total capacity384 GB (4 × 96 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 384GB 4X96GB

Show 18 more
  • 384GB total capacity with four 96GB modules for maximum server memory density
  • DDR5-4800 CL40 timing matches the GIGABYTE MZ73-LM1 controller for rated speed operation
  • Registered ECC architecture offloads the controller and corrects single-bit errors automatically
  • 1V DDR5 voltage reduces power draw while maintaining full 4800MHz performance
  • 288-pin RDIMM form factor fits the motherboard's required slot type and population rules

Exact-match DDR5-4800 kit for GIGABYTE MZ73-LM1

This 384 GB kit delivers four 96 GB DDR5-4800 RDIMMs built to the exact rank, voltage and timing the MZ73-LM1 memory controller expects. Registered ECC architecture lets every slot run fully populated at rated speed while correcting single-bit errors on the fly. The modules install directly into the board's 288-pin DDR5 slots without adaptation.

Thermals and power at rated load

Each module operates at 1.1 V, the standard DDR5 voltage, keeping power draw predictable in dense server configurations. No heat spreaders are fitted, so airflow through the chassis determines module temperature under sustained workloads. Registered buffering reduces electrical load on the memory controller, helping maintain stability when all four slots are populated.

Replaces mismatched or lower-capacity RDIMMs

This kit upgrades systems running smaller or mixed-capacity DDR5 RDIMMs that force the controller to down-clock or leave slots empty. The jump is worth it when the workload demands the full 384 GB at native DDR5-4800 with ECC protection. It is not for boards that require UDIMM or SODIMM form factors, nor for platforms that do not support 2Rx4 registered modules at this density.

How it compares

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

Price $11,668.99
Pricier than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (4 × 96 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $30.39 per GB
Pricier than about 87% 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 numberMR38400-9624K4
Total capacity384 GB (4 × 96 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 items384 GB 4 × 96 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 four 96GB RDIMMs in the GIGABYTE MZ73-LM1 and which slot order do people get wrong?

Populate all four 288-pin DDR5 RDIMM slots following the MZ73-LM1 manual's population sequence; the common mistake is skipping the prescribed order, which prevents the 384GB kit from being recognised at full capacity.

Will the Samsung, Micron or Hynix chips on these modules need any firmware updates or thermal-pad replacements later?

No firmware updates or thermal-pad changes are required; the registered ECC RDIMMs run at 1.10V without heat spreaders and are designed for continuous server operation without user-serviceable parts.

At what point does the CL40 latency at 4800 MT/s become the bottleneck during sustained all-core workloads?

The CL40 timing at DDR5-4800 (PC5-38400) is the first limit reached under sustained heavy traffic, as the memory controller waits the full 40 cycles for each column access before issuing the next command.

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