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Green rectangular DDR4 RDIMM module with black memory chips and gold contacts

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC RDIMM CL19 2Rx8 1.2V 288-pin Dell PowerEdge R240 memory upgrade

SKU CH-DG5H-V7W04

16 GB DDR4 2666 ECC registered RDIMM for Dell PowerEdge R240 server upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection prevents data corruption in critical workloads
  • Registered design improves signal integrity for server stability
  • 16 GB capacity expands Dell PowerEdge R240 memory
  • 2666 MHz DDR4 speed matches system specifications
  • 2 V operation reduces power draw and heat

Dell PowerEdge R240 server memory

This 16 GB DDR4 2666 ECC registered DIMM is built for the Dell PowerEdge R240 rack server. It targets administrators who need to add a single 288-pin module to expand capacity on that platform. The registered design and error-correcting code suit always-on workloads where data integrity matters.

Installation and common issues

The module fits a standard 288-pin DDR4 slot and installs in minutes; Dell’s service manual shows the exact population order for the R240. Problems usually arise when mixing registered ECC with unbuffered non-ECC DIMMs or when the firmware expects a different rank layout, so follow the vendor’s configuration guide.

Capacity, speed and rank constraint

The single rank 2Rx8 organisation at 2666 MT/s CL19 and 1.2 V determines whether the memory controller accepts the module. If your R240 configuration requires a different rank count, voltage or latency the system will not post.

How it compares

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

Price $111.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.00 per GB
Cheaper than about 57% 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 numberMR21300-628K1
Total capacity16 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 rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How can I verify the 16GB DDR4 2666 ECC RDIMM is operating correctly after installing it in a Dell PowerEdge R240?

The server POST will display the new 16GB capacity and 2666 MT/s speed; ECC status appears as "Enabled" in the BIOS memory configuration, and iDRAC or OpenManage will report zero correctable errors during initial stress testing.

What is included in the package and what additional components are required for installation in the R240?

The box contains one 16GB 2Rx8 CL19 288-pin DDR4 RDIMM; no extra cables, brackets or tools are needed — the module seats directly into an available DDR4 DIMM slot on the R240 motherboard.

Which capacity and rank configuration should I select if I need a single module to expand a Dell PowerEdge R240?

Choose the 16GB 2Rx8 variant (part number MR21300-628K1); it matches the R240's supported DDR4 2666 registered ECC specification and installs as a single 16GB DIMM.

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