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Green rectangular DDR4 LRDIMM module with black chips on both sides and gold edge connectors

NEMIX RAM

NEMIX RAM 32GB DDR4 2666 ECC LRDIMM 1Rx4 CL19 288-Pin memory upgrade

SKU CH-A4AJ-0E0C7

32 GB DDR4 2666 ECC LRDIMM module with 2Rx4 ranks and CL19 latency for HPE Z840 servers

  • Total capacity2 TB (16 × 128 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V
  • 32 GB capacity expands server memory headroom
  • DDR4 2666 speed delivers high data throughput
  • ECC LRDIMM technology protects data integrity
  • 2Rx4 rank organisation optimises signal loading
  • 2 V operation reduces power consumption

32 GB DDR4 LRDIMM for HPE Z840

This 32 GB DDR4 2666 MHz load-reduced ECC module is built for the HPE Z840 server platform. It targets IT teams that need registered memory with error correction for mission-critical workloads.

Thermals and power in daily use

The module runs at 1.2 V without a heat spreader, relying on chassis airflow for cooling. Load-reduced buffering reduces electrical load on the memory controller, helping keep system power draw stable under sustained demand.

Build and slot implications

A 288-pin LRDIMM form factor fits DDR4 server slots that support load-reduced memory. The 2Rx4 organisation and CL19 latency suit high-capacity configurations, but the module will not work in consumer desktop boards or unbuffered channels.

How it compares

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

Price $210.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 2 TB (16 × 128 GB)
Higher than about 99% of the 20,941 comparable items (median 32 GB).
Price per GB $0.11 per GB
Cheaper than about 99% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineHPE Server/Workstation Compatible Series Memory
Model nameHPE DDR4 2666 MHz ECC LRDIMM Load Reduced Server Memory
Part numberML21300-324K1
Total capacity2 TB (16 × 128 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 rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHPE
In the box
Included items32 GB (1 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory

Questions about this item

How do I install the 288-pin DDR4 LRDIMM in my HPE Z840 server, and which step do people often get wrong?

Align the notch on the module with the slot key, press straight down until both retention clips click, and verify the 2Rx4 rank appears in BIOS; the step often missed is seating the module fully so both clips engage at once.

What maintenance or replacement will the 32GB ECC LRDIMM need during its service life?

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, and the module should only be replaced if the server logs uncorrectable memory errors or a DIMM health alert.

What limit appears first when the 2666 MHz CL19 LRDIMM runs sustained workloads?

The CAS latency of CL19 at 2666 MT/s sets the timing ceiling; sustained throughput will be bound by that latency before thermal or voltage limits are reached.

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