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Green circuit board with black memory chips, gold edge connectors, no heat spreader

NEMIX RAM

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

SKU CH-839A-2K54K

64 GB DDR5 4800 ECC RDIMM module with CL40 latency, 1.1 V operation and 2Rx4 organisation for SuperMicro GPU SuperServer systems

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB capacity supports large server workloads
  • DDR5 4800 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for Supermicro SYS-421 and SYS-821 series

64GB DDR5 ECC RDIMM for Supermicro servers

This 64GB DDR5 4800 registered DIMM is built for Supermicro GPU SuperServer platforms including the SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT. It targets administrators who need ECC protection and registered signalling in a single high-density module.

Major OEM Samsung Micron Hynix chips tested under

Modules use major OEM DRAM from Samsung, Micron or Hynix and are rigorously stress tested before shipment. The registered buffer and on-die ECC reduce electrical load on the memory controller while correcting single-bit errors, improving stability in multi-DIMM configurations.

64GB capacity at 4800MT/s CL40 1.1V

The 64GB density suits memory-hungry virtualisation, GPU compute and large-database workloads on supported Supermicro systems. Headroom ends when the platform’s maximum DIMM count or total memory limit is reached, or when workloads demand speeds beyond 4800MT/s.

How it compares

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

Price $1,741.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.22 per GB
Pricier than about 76% 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 numberMR38400-924K1
Total capacity64 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 items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 2Rx4 DDR5 ECC RDIMM need a heat spreader added later?

The module ships without a heat spreader; most server chassis provide enough airflow for 1.1 V DDR5 4800 operation, but verify your SuperMicro GPU SuperServer airflow before deciding.

What limits sustained throughput on the CL40 4800 MT/s registered DIMM?

The registered buffer and CL40 latency set the ceiling; the 2Rx4 organisation and 1.1 V supply keep bandwidth at PC5-38400 without further bottlenecks.

How much heat and power does the 64 GB 1.1 V DDR5 RDIMM produce under all-day load?

At 1.10 V the module draws minimal power for 64 GB, and the lack of a spreader means heat stays low provided the SuperMicro server fans maintain normal flow.

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