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Green circuit board SODIMM module with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC SODIMM Synology RS822+ memory upgrade

SKU CH-X1GT-KF6E2

A 16GB DDR4 2666 ECC SODIMM module built for Synology RS822+ NAS upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB DDR4 ECC memory protects data integrity for Synology RS822+
  • 2666 MT/s speed with CL19 latency boosts NAS responsiveness
  • 2 V low-voltage operation reduces power draw and heat
  • 2Rx8 dual-rank design maximises capacity in a single 260-pin SODIMM
  • Built with Samsung, Micron or Hynix chips and stress-tested for reliability

Synology RS822+ ECC SODIMM upgrade

This 16 GB DDR4 2666 ECC SODIMM is built for the Synology RackStation RS822+ NAS. It adds error-correcting memory to a system that relies on data integrity for file services and virtualization. The unbuffered 260-pin module installs directly into the available slot without proprietary trays. IT administrators can expand capacity in minutes using standard tools.

Replaces lower-capacity or non-ECC modules

Swapping the factory 4 GB or 8 GB stick for this 16 GB module doubles or quadruples usable memory while adding ECC protection. The jump is worth it when the NAS runs Docker containers, virtual machines or heavy multi-user file shares that exceed the original memory ceiling. Systems already at 16 GB with ECC will not benefit from this single-module upgrade.

Limited to DDR4 2666 SODIMM slot

The RS822+ accepts only DDR4 2666 unbuffered ECC SODIMMs at 1.2 V with CL19 timing. Faster DDR4 speeds downclock to 2666 MHz, and non-ECC or registered DIMMs are not supported. The single-slot design caps total memory at 16 GB, so larger deployments must use a different Synology model. No DDR5 or 288-pin DIMM will fit this platform.

How it compares

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

Price $128.99
Cheaper than about 64% 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 $8.06 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered SODIMM
Part numberMSE21300-628K1
Total capacity16 GB
Product type260-PIN DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM

Questions about this item

Will the 260-pin SODIMM fit the RS822+ memory slot?

Yes, the module is a 260-pin DDR4 ECC SODIMM built for the RS822+ memory slot.

Do I need to configure anything in DSM after inserting the 16 GB stick?

No, DSM detects the 16 GB DDR4 2666 ECC module automatically on boot.

When should I replace this 1.2 V ECC SODIMM?

Replace it only if memory tests report errors or the NAS becomes unstable.

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