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Green rectangular DDR4 LRDIMM module with black chips and gold contacts

NEMIX RAM

NEMIX RAM 64GB DDR4 2666MHz ECC LRDIMM CL19 288-Pin memory upgrade

SKU CH-HV1V-KKENB

A 64 GB DDR4 2666 MHz ECC LRDIMM module with CL19 latency and 1.2 V operation for compatible ASRock server motherboards

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

Capacity 64GB

  • 64GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers PC4-21300 bandwidth
  • ECC LRDIMM design maintains data integrity under load
  • 20V operation reduces power draw per module
  • Validated for ASRock Rack EPYCD8-2T motherboards

Server ECC LRDIMM upgrade

This NEMIX RAM module delivers 64GB of DDR4 2666 ECC Load Reduced memory in a single 288-pin LRDIMM. It operates at 1.2V with CL19 latency and a 4Rx4 rank structure using major OEM DRAM. The kit targets administrators expanding ASRock Rack EPYCD8-2T platforms.

Platform slot and rank limits

Verify that your motherboard accepts 4Rx4 Load Reduced DIMMs at the DDR4 2666 data rate and that the memory controller supports the total capacity you intend to install. Check the vendor documentation for maximum per-slot density and population rules before ordering.

Single-module simplicity

The package contains one 64GB LRDIMM with no heat spreader, allowing direct installation into an available slot. No additional cables, brackets or software licences are included, so the upgrade is limited to the memory capacity itself.

How it compares

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

Price $208.99
Cheaper than about 58% 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 $3.27 per GB
Cheaper than about 88% 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 LRDIMM Load Reduced Server Memory
Part numberML21300-944K1
Total capacity64 GB
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (1 × 64 GB) DDR4 2666 MHz PC4-21300 4Rx4 1.2 V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory

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Questions about this item

Does the package include only the 64GB DDR4 2666MHz ECC LRDIMM module or are extra parts needed?

The box contains one 64GB DDR4 2666MHz PC4-21300 CL19 288-pin ECC LRDIMM module; no additional components are required for installation.

When should I choose the 64GB 4Rx4 LRDIMM over a smaller registered DIMM for my ASRock EPYCD8-2T?

Choose this 64GB 4Rx4 load-reduced module when the platform needs maximum capacity per slot and the memory controller supports LRDIMM topology.

What does the PC4-21300 rating mean once the module is installed in the server?

PC4-21300 confirms a 2666 MT/s data rate at 1.2 V with CL19 latency, delivering the rated throughput when the motherboard runs the memory at its native speed.

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