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Sixteen green DDR4 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 128GB (16x8GB) DDR4 2666 ECC RDIMM CL19 1.2V for Dell PowerEdge R7425

SKU CH-2CS4-3Z5KE

128 GB DDR4 2666 MHz ECC registered server memory kit with sixteen 8 GB modules at CL19 and 1.2 V for Dell PowerEdge R7425

  • Total capacity128 GB (16 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 128GB 16X8GB

Show 8 more
  • 128 GB total capacity from sixteen 8 GB modules
  • ECC registered design detects and corrects data errors
  • DDR4 2666 MHz speed rated at PC4-21300
  • CL19 latency at 1.20 V operating voltage
  • Validated for Dell PowerEdge R7425 server compatibility

Capacity and configuration

This kit delivers 128GB of DDR4 memory in sixteen 8GB registered DIMMs. It targets administrators scaling Dell PowerEdge R7425 servers for virtualization, databases or high-throughput workloads.

Upgrade path

Replacing smaller or mixed-capacity modules with this uniform 16x8GB kit eliminates population gaps and enables full-channel operation at 2666 MT/s. The jump is worthwhile when the platform demands maximum registered ECC capacity per processor.

Build integration

Each 288-pin RDIMM operates at 1.2V with CL19 timing and 1Rx8 organization. The modules require a server board that supports registered ECC DDR4 and enough free slots for all sixteen sticks; no heat spreaders are fitted.

How it compares

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

Price $860.99
Pricier than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (16 × 8 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.73 per GB
Cheaper than about 59% 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 RDIMM Registered Server Memory
Part numberMR21300-818K16
Total capacity128 GB (16 × 8 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items128 GB (16 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

Will the 288-pin RDIMM modules fit the Dell PowerEdge R7425 memory slots?

Yes, the 288-pin DDR4 RDIMM form factor matches the R7425 DIMM slots exactly.

What is the correct population order for the 16 modules across the two CPU sockets?

Fill each processor's channels symmetrically; the R7425 requires balanced DIMM counts per channel for optimal 2666 MT/s operation.

Do these registered ECC modules require any firmware or BIOS updates before installation?

The R7425 generally supports DDR4 2666 RDIMMs natively; verify the system BIOS is current to ensure full 128 GB recognition.

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