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Two green DDR5 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400MHz CL52 2Rx4 1.1V ECC RDIMM Supermicro SYS-242B-NR memory upgrade

SKU CH-Q00P-D6B3J

A 128 GB registered DDR5 ECC kit with two 64 GB modules running at 6400 MHz and CL52 latency for the Supermicro SYS-242B-NR server

  • Total capacity128 GB (2 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • ECC protection guards data integrity with registered DDR5 modules
  • 128 GB total capacity from two 64 GB DIMMs
  • 6400 MHz speed rating for high-throughput server workloads
  • CL52 latency at 1.1 V for efficient operation
  • Validated for Supermicro SYS-242B-NR SuperServer systems

128GB DDR5 6400 ECC RDIMM kit for Supermicro

This 128GB kit contains two 64GB DDR5 6400MHz PC5-51200 modules built for the Supermicro MP SuperServer SYS-242B-NR. Each module is a 288-pin ECC RDIMM with a 2Rx4 organisation and CL52 latency. Registered buffering and on-die ECC protect data integrity in multi-socket server workloads.

Sustained throughput with registered ECC at 1.1V

Registered DDR5 modules keep signal integrity stable across all populated slots during continuous operation. The 1.1V operating voltage reduces power draw per gigabyte while the ECC logic corrects single-bit errors without halting the pipeline. CL52 timing is maintained across the full 128GB capacity under prolonged load.

Replaces smaller RDIMM sets when capacity limits

Upgrading from a lower-capacity registered kit removes the need to swap modules between slots to reach working-set size. The jump is worthwhile when virtual machines, in-memory databases or container clusters exceed the previous memory ceiling and the SYS-242B-NR memory controller supports the full 6400MHz data rate.

How it compares

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

Price $4,588.99
Pricier than about 79% 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 $35.85 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
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 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much power does the 1.1V DDR5 kit draw under continuous load?

The modules run at 1.1V standard DDR5 voltage; registered ECC RDIMMs at this speed typically draw a few watts per stick, so the pair adds minimal heat to a server chassis with normal airflow.

What must the Supermicro SYS-242B-NR already have for this 288-pin RDIMM kit to work?

The motherboard needs free DDR5 RDIMM slots that support registered ECC memory and a BIOS that recognises 2Rx4 64GB modules at 6400MHz.

Will the 2Rx4 64GB sticks work alongside existing 1Rx4 or 2Rx8 modules in the same server?

Mixing ranks is possible if the platform's memory controller supports it; populate each channel with identical rank configurations for best stability.

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