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Two green DDR5 RDIMM modules, bare chips, no heat spreader, 288-pin edge connectors

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400MHz CL52 2Rx4 1.1V ECC RDIMM Supermicro SYS-822GS-NB3RT memory upgrade

SKU CH-C5WS-84XTD

A 256 GB dual-rank DDR5 ECC registered memory kit with two 128 GB modules at 6400 MHz CL52 for the Supermicro SYS-822GS-NB3RT

  • Total capacity256 GB (2 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank2Rx4
  • ECC protection safeguards data integrity in server workloads
  • Registered DDR5 design supports 256GB capacity across two modules
  • 6400MHz speed with CL52 latency delivers responsive throughput
  • 1V operation reduces power draw for dense configurations
  • Validated for Supermicro SYS-822GS-NB3RT SuperServer compatibility

System-specific DDR5 server memory

This 256 GB kit contains two 128 GB DDR5 ECC registered DIMMs built for the Supermicro SuperServer SYS-822GS-NB3RT. Each module runs at 6400 MHz with a CAS latency of 52 and operates at 1.1 V. The 288-pin RDIMM form factor and 2Rx4 organisation match the platform’s memory architecture.

ECC and registered buffering

Error-correcting code detects and corrects single-bit errors while the registered buffer reduces electrical load on the memory controller. Together they protect data integrity and allow the server to populate all supported slots without signal degradation. No heat spreader is included, relying on the chassis airflow design.

Capacity headroom for virtualisation workloads

The dual-rank configuration delivers 256 GB total capacity, providing ample room for large virtual-machine fleets, in-memory databases or container clusters. Workloads that exceed this limit or require higher memory frequencies will need a platform with greater DIMM-slot count or faster memory support.

How it compares

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

Price $9,055.99
Pricier than about 86% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $35.37 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 numberMR51200-724K2
Total capacity256 GB (2 × 128 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 items256 GB (2 × 128 GB) DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 2Rx4 DDR5 ECC RDIMM modules need any firmware updates or thermal-pad replacement later?

The modules are 288-pin DDR5 ECC RDIMMs with no heat spreader; they rely on server airflow and have no user-serviceable firmware or pads.

What is the first limit reached when the 256 GB kit runs at 6400 MHz CL52 continuously?

The CAS latency of CL52 at 6400 MHz sets the timing boundary; sustained loads will hit that latency ceiling before bandwidth saturates.

How much heat and power do the 1.1 V 128 GB sticks produce under all-day load?

Each 128 GB module operates at 1.10 V, so total kit draw stays low and heat output is modest without a spreader.

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