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Green rectangular DDR5 memory module with gold edge contacts and black chips, no heat spreader

NEMIX RAM

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

SKU CH-2NJB-YR3S6

64 GB DDR5 4800 ECC registered DIMM, CL40 1.10 V, 2Rx4, for Supermicro SYS-111C-NR and SYS-521C-NR servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64GB capacity supports heavy server workloads
  • DDR5 4800 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1V operation reduces power consumption
  • Validated for SuperMicro SYS-111C-NR and SYS-521C-NR

64GB DDR5 ECC RDIMM for Supermicro servers

This 64GB DDR5 4800 registered DIMM adds error-correcting memory to compatible Supermicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems. The 2Rx4 organisation and CL40 latency suit workloads that require data integrity over raw throughput. It operates at the standard 1.1V DDR5 voltage.

Sustained-load behaviour with registered ECC

The registered buffer reduces electrical load on the memory controller, allowing stable operation when all slots are populated under continuous server workloads. ECC corrects single-bit errors on the fly, preventing silent data corruption during long-running compute or storage tasks. Samsung, Micron or Hynix major-brand DRAM chips provide consistent timing at 4800 MT/s.

Straightforward DIMM installation.

The 288-pin module seats in standard DDR5 RDIMM slots without tools; most technicians complete the swap in minutes. Systems that require matched ranks or specific slot-filling orders may reject a single 64GB stick if the platform expects paired modules. Buyers needing larger total capacity should verify the motherboard's maximum supported density per channel before ordering.

How it compares

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

Price $1,773.99
Pricier than about 67% 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 $27.72 per GB
Pricier than about 77% 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

How much power does the 1.1 V DDR5 4800 module draw under sustained server loads?

The module operates at 1.10 V, the standard voltage for DDR5 4800, which keeps power draw lower than previous DDR generations while delivering 38400 MB/s bandwidth.

What motherboard slot and chipset are required to run this 288-pin ECC RDIMM?

A Supermicro motherboard with DDR5 RDIMM slots — such as the X13SEDW-F or the UP SuperServer SYS-111C-NR and SYS-521C-NR — is needed; the registered design and ECC function require a compatible server chipset.

Can I mix this 64 GB 2Rx4 CL40 stick with existing DDR5 4800 modules of different rank or latency?

Mixing ranks or CAS latencies is not recommended; for stability, populate all channels with identical 2Rx4 CL40 modules at 4800 MT/s.

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