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

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-91RT-K8SH3

Four 16 GB DDR5 4800 ECC registered DIMMs add 64 GB to compatible Supermicro servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection prevents data corruption in critical workloads
  • 64GB capacity across four 16GB modules supports heavy multitasking
  • DDR5 4800 speed delivers high bandwidth for server tasks
  • Registered design with CL40 latency ensures stable signal integrity
  • 1V operation reduces power draw in dense configurations

Capacity and purpose

This 64GB kit supplies four 16GB DDR5 4800 registered DIMMs built for Supermicro UP SuperServer SYS-111C-NR and SYS-521C-NR platforms as well as the X13SEDW-F motherboard. It targets administrators who need error-correcting memory for mission-critical workloads.

Registered ECC advantage

Registered buffering reduces electrical load on the memory controller, while on-die ECC corrects single-bit errors before they reach the CPU. The combination keeps data integrity high during sustained server tasks without requiring additional software.

DDR5 4800 constraints

The modules run at 1.1V with CL40 latency and a single-rank 1Rx8 organisation, limiting maximum throughput to the PC5-38400 standard. Systems that demand higher frequencies or lower latencies cannot exceed this specification.

How it compares

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

Price $1,611.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $25.19 per GB
Pricier than about 70% 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 numberMR38400-618K4
Total capacity64 GB (4 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (4 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 1Rx8 DDR5 RDIMM layout affect future capacity upgrades?

Each module is a single-rank 16 GB stick, so the four installed DIMMs occupy four slots; adding more capacity later will require free slots or replacing existing modules.

What thermal limit appears first when the kit runs at 4800 MT/s continuously?

The modules operate at 1.10 V without heat spreaders, so sustained load will hit the DRAM junction temperature threshold before any voltage or power limit is reached.

How much power does the 64 GB kit draw at 1.1 V under all-day load?

At 1.1 V the four registered DIMMs typically draw roughly 13 W total when fully stressed, making cooling airflow the main design consideration.

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