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Four green DDR4 LRDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR4 2666 CL19 ECC LRDIMM memory upgrade

SKU CH-TEVF-0N74Q

256 GB DDR4 ECC load-reduced server kit with four 64 GB modules at 2666 MT/s, CL19, 1.2 V for Dell PowerEdge R7425

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeLoad Reduced
  • Rated voltage1.2 V

Capacity 256GB 4X64GB

Show 8 more
  • 256 GB total capacity from four 64 GB modules
  • DDR4 2666 speed rated at PC4-21300 for server workloads
  • ECC and load-reduced design protects data integrity
  • 2 V operation keeps power draw low
  • Validated for Dell PowerEdge R7425 systems

256GB DDR4 ECC LRDIMM kit

This NEMIX RAM kit provides 256GB of DDR4 2666 memory in four 64GB modules. It uses Load Reduced ECC LRDIMM technology with CL19 latency and 1.2V operation. The 288-pin modules are validated for Dell EMC PowerEdge R7425 servers and built with major OEM DRAM chips.

Suited for Dell R7425 capacity upgrades

The kit targets administrators expanding memory in compatible Dell PowerEdge R7425 servers where ECC and load-reduced signalling are required. It is not for consumer desktops, workstations needing standard RDIMM or UDIMM modules, or systems that cannot accept 4Rx4 LRDIMM population rules.

Four-slot kit for matched population

The four-module package fills a matched channel set, simplifying installation without mixing ranks or speeds. It requires a platform supporting DDR4 LRDIMM at 2666 MT/s and 4Rx4 organisation. The kit frees procurement from sourcing individual validated modules and ensures uniform 1.2V operation across all slots.

How it compares

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

Price $922.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $3.61 per GB
Cheaper than about 86% 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 numberML21300-944K4
Total capacity256 GB (4 × 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 systemsDell
In the box
Included items256 GB (4 × 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

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Questions about this item

Does the Dell EMC PowerEdge R7425 need a specific BIOS revision before installing four 64 GB 2666 MT/s LRDIMMs?

The modules run at 1.2 V with CL19 timing; the server’s firmware must recognise 4Rx4 LRDIMMs at 2666 MT/s for the 256 GB kit to initialise correctly.

Will these 288‑pin LRDIMMs work in the same R7425 slots that currently hold standard RDIMMs?

Load‑reduced and registered DIMMs cannot be mixed in the same channel; all slots in a channel must use the same 4Rx4 LRDIMM type for the kit to operate.

How can I confirm the 256 GB kit is running at the rated 2666 MT/s with ECC active after installation?

Check the BIOS memory information or OS tools such as dmidecode — they should report 2666 MT/s, 4Rx4 organisation, ECC enabled and a total of 256 GB across the four modules.

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