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Green rectangular circuit board with gold contacts and black memory chips, 288-pin DDR5 RDIMM server module

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM Hynix HMCT04AEERA138N memory upgrade

SKU CH-JAP6-5BTVP

A 128GB DDR5 registered ECC module running at 4800MHz with CL40 latency and 1.1V operation for compatible server motherboards

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity supports large datasets
  • DDR5 4800 speed enables fast data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • 4Rx4 288-pin RDIMM fits compatible server boards

NEMIX RAM 128GB DDR5 4800 ECC RDIMM

This module is a 128GB DDR5 4800 registered DIMM with ECC, built for server and workstation boards that require 4Rx4 organisation and 1.1V operation. It delivers 128GB in a single 288-pin slot, suited to high-density memory configurations in compatible enterprise platforms.

Suited for Hynix-compatible servers needing

It fits administrators upgrading Hynix-qualified systems that support DDR5 4800 RDIMMs with CL40 latency and 4Rx4 ranking. It is not for consumer desktop boards that accept only unbuffered UDIMMs, nor for platforms that cannot address a 128GB registered module.

4Rx4 rank and CL40 at 1.1V determine fit

The module uses a 4Rx4 layout with CL40 timings at 1.1V, so the motherboard must explicitly support that rank structure and voltage. Verify the system qualified vendor list for Hynix HMCT04AEERA138N compatibility before purchase.

How it compares

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

Price $4,164.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.54 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineHynix Server/Workstaion Compatible Series Memory
Model nameHynix DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K1
Total capacity128 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHynix
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 4Rx4 registered ECC module need firmware updates or scheduled replacement after extended server use?

The module is a DDR5 4800 CL40 1.1V 288-pin RDIMM with on-die ECC and register buffers; no firmware updates are required and the component has no moving parts, so no scheduled replacement is needed under normal operation.

What limit appears first when the 128GB 4Rx4 stick runs at DDR5 4800 continuously under heavy load?

The registered buffer and 4Rx4 organisation impose the electrical loading limit on the memory channel before thermal throttling becomes a factor at the rated 1.10V.

How much heat and power does the 1.1V 288-pin RDIMM produce when it runs all day in a dense server?

Operating at 1.10V with no heat spreader, the module draws low power per gigabyte and relies on chassis airflow; typical sustained power stays within the standard DDR5 RDIMM thermal envelope for 4Rx4 densities.

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