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Two green DDR5 RDIMM modules, 288-pin, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2×64GB) DDR5 4800 ECC RDIMM CL40 1.1V 2Rx4 288-pin memory upgrade

SKU CH-1YZP-8A3MB

A 128 GB DDR5 ECC registered kit with two 64 GB modules at 4800 MT/s and CL40 for Supermicro GPU SuperServer systems

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity for large server workloads using 2×64 GB modules
  • DDR5 4800 speed with CL40 latency for registered ECC stability
  • 1 V operating voltage reduces power draw in dense configurations
  • 2Rx4 rank organisation on 288-pin RDIMM form factor for Supermicro platforms
  • Major OEM Samsung, Micron or Hynix chips tested under load for reliability

NEMIX RAM 128GB DDR5 ECC RDIMM Kit

This kit delivers 128 GB of DDR5 registered ECC memory in a matched pair of 64 GB modules. It is built for Supermicro GPU SuperServer systems including the SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT platforms. The modules operate at 4800 MT/s with a CAS latency of 40 and a low 1.1 V supply. IT professionals who need validated stability for mission-critical workloads will find this configuration suitable.

Registered ECC design with dual-rank layout

Registered buffering reduces electrical load on the server memory controller, allowing higher capacities per channel. On-die ECC corrects single-bit errors to protect data integrity during sustained compute tasks. The 2Rx4 organisation provides dense 64 GB per module without requiring additional DIMM slots. Samsung, Micron or Hynix major-OEM chips are used, and every kit is stress-tested under load before shipping.

Suited for Supermicro GPU SuperServer upgrades

This memory fits the three listed Supermicro models and other boards that accept DDR5 4800 RDIMM modules with matching rank and voltage. Builders who need unbuffered UDIMM memory, non-ECC modules or speeds above 4800 MT/s should look elsewhere. Systems requiring a different pin count, lower capacity per DIMM or a heat spreader will not be compatible with this kit.

How it compares

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

Price $3,411.99
Pricier than about 74% 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 $26.66 per GB
Pricier than about 74% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz 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
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 2Rx4 RDIMM modules need replacement if I upgrade the CPU later?

The kit uses 2Rx4 registered ECC DDR5 at 4800 MT/s; it will remain compatible with any future CPU that supports the same DDR5 RDIMM specification.

What limit appears first when the 128 GB kit runs at full load continuously?

The registered ECC design and 1.1 V operation keep thermal and signal integrity within spec, so the platform memory controller or workload bandwidth typically saturates before the modules themselves.

How much heat and power do the two 64 GB sticks generate during all-day operation?

Each module runs at 1.1 V with no heat spreader, so power draw stays low and heat output is minimal for a 128 GB DDR5 registered kit.

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