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Green bare circuit board DDR4 RDIMM module 288 pins 64GB 2666 CL19 1.2V

NEMIX RAM

NEMIX RAM 64GB DDR4 2666 ECC RDIMM CL19 2Rx4 1.2V 288-Pin memory upgrade

SKU CH-XHVJ-HRQV8

64GB DDR4 2666 ECC registered RDIMM for ASRock EPYC servers, CL19 2Rx4 1.2V 288-pin module

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 64GB

  • 64GB capacity scales server workloads efficiently
  • ECC registered design protects data integrity
  • DDR4 2666 speed matches platform requirements
  • 2V operation reduces power consumption
  • 2Rx4 288-pin RDIMM fits compatible ASRock EPYC boards

Compatible DDR4 RDIMM for ASRock EPYC systems

This registered ECC module is built for ASRock Rack ROMED8-2T motherboards running AMD EPYC processors. It targets server and workstation builders who need validated memory for mission-critical workloads. The single 64 GB stick simplifies population of available DIMM slots.

Registered ECC with 2Rx4 organisation

The module operates as a registered dual-rank x4 device, delivering error correction and signal buffering required by multi-socket server platforms. CL19 latency at DDR4 2666 ensures compatibility with the platform’s memory controller without overclocking. Voltage is set at the standard 1.20 V for DDR4 server memory.

64 GB capacity per module

One stick provides 64 GB of addressable memory, allowing high-density configurations when multiple slots are filled. Workloads such as virtualisation, database caching and large-scale analytics benefit from the added headroom. Systems requiring more than the per-module limit must populate additional slots with identical registered ECC parts.

How it compares

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

Price $264.99
Cheaper than about 56% 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 $4.14 per GB
Cheaper than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2666 MHz ECC RDIMM Registered Server Memory
Part numberMR21300-924K1
Total capacity64 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (1 × 64 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Other versions of this model

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Questions about this item

How does the 2666 MT/s speed translate once the module is installed in a compatible ASRock EPYC motherboard?

The module runs at DDR4 2666 (PC4-21300) with CL19 latency and 1.20 V, delivering the rated throughput on supported EPYC platforms.

What does the ECC RDIMM registered interface mean for system stability and maximum capacity?

Registered ECC adds error correction and a register buffer, allowing the memory controller to drive higher capacities reliably on server boards.

Will the 288-pin 2Rx4 stick fit the DIMM slots on an ASRock Rack ROMED8-2T without a heat spreader?

Yes — it is a standard 288-pin DDR4 RDIMM with no heat spreader, so it seats directly in the board's DDR4 slots.

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