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Green printed circuit board with black memory chips and gold edge connectors on a 288-pin DDR5 RDIMM module

NEMIX RAM

NEMIX RAM 64GB DDR5 6400 ECC RDIMM 2Rx4 CL52 1.1V memory upgrade

SKU CH-P7TX-QYMHX

64GB DDR5 6400 ECC registered DIMM with CL52 timing and 1.1V operation for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards

  • Total capacity64 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB

Show 4 more
  • 64 GB DDR5 6400 speed rated at PC5-51200 for full server bandwidth
  • CL52 latency with 1.1 V operation keeps power draw low per module
  • Registered 2Rx4 architecture offloads the memory controller for stable fully populated slots
  • On-die ECC detects and corrects single-bit errors to prevent silent data corruption
  • 288-pin RDIMM form factor matches ASRock Rack GNRD16DNO and GNRD16QM3-NL requirements

Exact-match server upgrade

This 64GB DDR5 6400 RDIMM is built for administrators expanding ASRock Rack GNRD16DNO or GNRD16QM3-NL platforms. Registered ECC architecture and CL52 timing at 1.10V match the board's memory controller requirements so every slot is recognised at full rated speed. It is not suited for workstations or desktops that accept only unbuffered UDIMM modules.

Capacity and headroom

A single 64GB 2Rx4 module delivers high-density capacity for virtualisation hosts, database nodes or compute clusters running memory-bound workloads. Registered buffering offloads the controller, allowing full population without signal degradation, while on-die ECC corrects single-bit errors before they reach the OS. Systems limited to lower maximum DIMM densities or slower DDR5 speeds cannot use this module at its rated specification.

Build integration

The 288-pin RDIMM form factor fits only server boards wired for registered memory; it will not seat in UDIMM or SODIMM slots. No heat spreader is fitted, so airflow across the DIMM row must be sufficient for sustained 1.10V operation. Buyers must verify the motherboard manual for approved population order and maximum supported capacity per channel before installation.

How it compares

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

Price $1,985.99
Pricier than about 68% 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 $31.03 per GB
Pricier than about 89% of the 20,941 comparable items (median $8.19 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
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-924K1
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 2Rx4 rank and 1.10V voltage let this 64GB DDR5 6400 module run at full speed in all slots of my ASRock Rack GNRD16DNO?

Yes, the 2Rx4 registered ECC design matches the motherboard's memory-population rules so every populated slot operates at the rated DDR5 6400 speed with CL52 timing.

How can I confirm the module is operating at DDR5 6400 with ECC active after installation?

Check the BIOS memory information screen or run a tool such as dmidecode to verify the speed reads 6400 MT/s, the voltage shows 1.10V, and ECC status is reported as enabled.

Does the package contain only the 64GB RDIMM or are any extra parts such as a heat spreader included?

The box includes the single 64GB 288-pin DDR5 RDIMM; no heat spreader or additional accessories are supplied.

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