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Two green DDR5 ECC RDIMM modules with black heat spreaders and gold contacts

NEMIX RAM

NEMIX RAM 64GB (2 x 32GB) DDR5 6400MHz PC5-51200 2Rx8 1.1V 288-PIN ECC RDIMM server RAM

SKU CH-YM9V-R4EDG

A 64 GB DDR5 server memory kit with two 32 GB ECC registered modules at 6400 MHz and 1.1 V

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latency52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB total capacity from two 32 GB modules
  • DDR5 6400 MHz speed rated at PC5-51200
  • ECC and registered design protects data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Built with major OEM Samsung, Micron, Hynix chips

Server ECC RDIMM Kit

This kit provides 64 GB of DDR5 server memory in two 32 GB registered DIMMs. It is built for systems that require ECC error correction and registered signalling at 6400 MT/s. The modules are not compatible with standard desktop or laptop platforms.

Thermals and Power

Each module operates at 1.1 V, keeping power draw low for high-density server configurations. The registered design adds a small buffering load but does not change the voltage requirement. No active cooling is included, so chassis airflow must handle the thermal load.

Build and Connectors

The 288-pin RDIMM form factor fits server boards that support DDR5 registered memory with 2Rx8 organisation. CAS latency is rated at 52 cycles at the rated speed. The kit uses major OEM DRAM from Samsung, Micron or Hynix. Buyers needing unbuffered UDIMMs or non-ECC memory for workstation boards cannot use this kit.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $2,583.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
CAS latency 52
Higher than about 90% of the 439 comparable items (median 40).
Price per GB $40.37 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Model namePart#: MR51200-328K2-SM-AS-1015CS-TNR
Part numberPart#: MR51200-328K2-SM-AS-1015CS-TNR
Total capacity64 GB (2 × 32 GB)
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latency52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.1 V

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules and what step is often missed?

Align the notch on each 288-pin module with the slot key, press firmly until both retention clips click, and ensure the server BIOS recognises the registered ECC configuration at 1.1 V.

What maintenance or replacement will the 64 GB kit need over time?

The modules have no moving parts; replacement is only required if a DIMM fails ECC error correction or the server platform is upgraded beyond DDR5 6400.

What limit appears first when the 2Rx8 RDIMMs run at 6400 MHz under sustained load?

The CAS latency of 52 cycles becomes the primary timing bottleneck before thermal or voltage thresholds are reached.

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