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Green rectangular circuit board with black memory chips on both sides and gold edge contacts

NEMIX RAM

NEMIX RAM 64GB DDR4 2666MHz CL19 4Rx4 ECC LRDIMM 1.2V 288-Pin Dell PowerEdge XR2 memory upgrade

SKU CH-1X5C-CYC9H

A 64 GB DDR4 2666 MHz ECC LRDIMM module with CL19 latency, 1.2 V operation and 4Rx4 organisation for Dell PowerEdge XR2 servers

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V
  • High-capacity 64GB module expands Dell PowerEdge XR2 memory
  • Load-reduced ECC design maintains data integrity under heavy server workloads
  • DDR4 2666MHz speed with CL19 latency delivers responsive enterprise performance
  • 2V operation reduces power draw in dense rack configurations
  • 288-pin LRDIMM form factor ensures direct compatibility with Dell XR2 slots

Dell PowerEdge XR2 Server Memory Upgrade

This 64GB NEMIX RAM module is built for Dell PowerEdge XR2 rack servers needing ECC load-reduced DDR4 memory. It targets IT administrators who maintain or expand these specific Dell platforms in enterprise environments.

4Rx4 ECC Load-Reduced DDR4 2666MHz Configuration

The single decisive specification is the 4Rx4 ECC LRDIMM organisation running at DDR4 2666 (PC4-21300) with CL19 latency. Only systems that accept this exact rank, voltage and registered buffer type will recognise the full 64GB capacity.

1.2V Operation Without Heat Spreader

Rated at 1.2V, the module draws standard DDR4 server power and relies on chassis airflow rather than an integrated heat spreader. In a properly ventilated Dell PowerEdge XR2 the memory runs within thermal limits without adding audible fan noise.

How it compares

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

Price $225.99
Cheaper than about 57% 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 $3.53 per GB
Cheaper than about 87% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell 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 systemsDell
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

Questions about this item

How does the 2666 MHz speed translate to real-world throughput in the PowerEdge XR2?

The DDR4 2666 rating corresponds to PC4-21300 bandwidth, so the module can sustain up to 21300 MB/s when the memory controller runs at the rated frequency.

What does the LRDIMM load-reduced design mean for the server's memory controller?

The 4Rx4 load-reduced DIMM presents a single electrical load per rank, letting the PowerEdge XR2 populate more slots without exceeding the controller's drive strength limits.

Will the 288-pin form factor and 1.2 V operation fit the XR2's DIMM slots without modification?

Yes — the module uses the standard 288-pin DDR4 LRDIMM keying and runs at 1.20 V, matching the slot specification for the Dell PowerEdge XR2.

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