We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green 288-pin DDR4 LRDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR4 2666 PC4-21300 4Rx4 CL19 288-Pin ECC LRDIMM memory upgrade

SKU CH-XCX7-7NSFD

Two 64 GB DDR4-2666 ECC LRDIMM modules add 128 GB of registered server memory at 1.2 V with CL19 latency

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 128GB 2X64GB

  • 128 GB total capacity with two 64 GB modules
  • DDR4 2666 speed rated at PC4-21300 for server workloads
  • ECC and load-reduced design protects data integrity
  • 20 V operation reduces power draw per module
  • 288-pin LRDIMM form factor fits compatible ASRock server boards

NEMIX RAM 128GB DDR4 2666 ECC LRDIMM kit

This NEMIX RAM kit provides 128 GB of DDR4 2666 memory in two 64 GB LRDIMM modules. It operates at 1.20 V with CL19 latency and includes on-die ECC with a 4Rx4 organisation. The load-reduced design lowers electrical loading on the server memory bus.

Suited for ASRock EPYCD8-2T server upgrades

The modules are validated for the ASRock Rack EPYCD8-2T motherboard and similar enterprise platforms that require registered ECC LRDIMMs. Builders needing standard UDIMMs, non-ECC memory, or higher-frequency DDR4 should select a different kit.

4Rx4 load-reduced organisation

Each 64 GB module uses a 4Rx4 rank structure that reduces the number of electrical loads presented to the memory controller. This allows the platform to populate more slots at the rated 2666 MT/s speed without signal degradation.

How it compares

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

Price $449.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $3.52 per GB
Cheaper than about 87% 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 lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2666 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML21300-944K2
Total capacity128 GB (2 × 64 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 items128 GB (2 × 64 GB) DDR4 2666 MHz PC4-21300 4Rx4 1.2 V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

What does the DDR4 2666 speed mean for actual throughput in a server?

DDR4 2666 runs at 2666 MT/s, giving each 64 GB module a PC4-21300 peak transfer rate; real-world bandwidth depends on the platform's memory controller and channel population.

How does the LRDIMM load-reduced design affect the memory bus?

The 4Rx4 LRDIMM buffers both data and address lines, reducing electrical load so the motherboard can populate more slots at the rated 2666 speed.

Will the 288-pin modules fit the ASRock Rack EPYCD8-2T DIMM slots?

Yes, the kit uses standard 288-pin DDR4 LRDIMM form factor and is validated for the ASRock Rack EPYCD8-2T motherboard.

More in Model-Specific Memory Upgrades

Similar items