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Four green DDR4 RDIMM modules, bare black chips, no heat spreaders, 288-pin edge connectors

NEMIX RAM

NEMIX RAM 32GB (4x8GB) DDR4 2666 ECC RDIMM CL19 1.2V 288-pin ASRock EPYC

SKU CH-M1PJ-F9AFR

32 GB DDR4 2666 ECC registered RDIMM kit (4 × 8 GB, CL19, 1.2 V) validated for ASRock EPYC server boards

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 32GB 4X8GB

  • 32 GB total capacity for high-density server workloads
  • DDR4 2666 MT/s speed with CL19 latency for responsive data handling
  • ECC registered RDIMM design protects data integrity in mission-critical systems
  • 2 V operation reduces power draw across all four modules
  • Validated for ASRock EPYC motherboards ensuring drop-in compatibility

DDR4 2666 ECC RDIMM kit

This 32 GB kit contains four 8 GB registered DDR4 modules that run at 2666 MT/s with CL19 latency. It is built for ASRock Rack ROMED8-2T motherboards that support AMD EPYC processors and require ECC registered memory.

32 GB capacity with ECC headroom

Four single-rank 1Rx8 modules provide 32 GB of error-correcting capacity for virtualization, database or file-server workloads. The registered design adds electrical buffering so the memory controller sees one load per module, but the kit stops at 2666 MT/s and CL19 so bandwidth-sensitive tasks may hit a ceiling.

288-pin registered fit for EPYC boards

The modules plug into standard 288-pin DDR4 RDIMM slots and operate at 1.2 V without a heat spreader. They need a motherboard that accepts registered ECC DIMMs and an EPYC-compatible platform; they will not work in consumer desktop boards that require unbuffered non-ECC memory.

How it compares

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

Price $198.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.22 per GB
Cheaper than about 63% 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 numberMR21300-818K4
Total capacity32 GB (4 × 8 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items32 GB (4 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

Will the four 8 GB DDR4 2666 ECC RDIMM modules work alongside existing registered memory in an ASRock EPYC server?

Yes, each 1Rx8 module runs at 1.2 V with CL19 timing, so it will operate with other registered DDR4 ECC DIMMs of the same speed and voltage in the same platform.

How can I verify the kit is running at DDR4 2666 with ECC active after installation?

Check the BIOS memory information or use a tool such as dmidecode; it should report 32 GB total, 2666 MT/s, registered ECC, 1Rx8 organisation and CL19 latency.

What exactly ships in the box and is anything else required to use the memory?

The package contains four 8 GB DDR4 2666 ECC RDIMM modules (part number MR21300-818K4); no additional parts are needed for installation in a compatible ASRock EPYC motherboard.

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