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Green circuit board memory stick with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC SODIMM Synology RS822+ memory upgrade

SKU CH-0K1V-S48G6

8GB DDR4 2666 ECC SODIMM module tested for Synology RS822+ NAS compatibility

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protection guards data integrity with built-in error correction
  • 2666 MHz DDR4 speed matches Synology RS822+ specifications
  • 2 V operation keeps power draw low in NAS enclosures
  • 260-pin SODIMM form factor fits the RS822+ memory slots
  • 1Rx8 single-rank layout simplifies installation and compatibility

Synology RS822+ DDR4 ECC SODIMM

This 8 GB DDR4 2666 ECC SODIMM is built for the Synology RackStation RS822+ NAS. It targets administrators who need to expand memory capacity in that specific rack-mounted system. The module is unbuffered and operates at 1.20 V. It is not suited for desktops or laptops that require non-ECC memory.

2666 MT/s CL19 single-rank specification

The decisive specification is the DDR4 2666 (PC4-21300) speed with CL19 latency in a 1Rx8 organisation. This exact combination matches the RS822+ memory controller requirements. A different speed, latency or rank configuration would prevent the NAS from booting or cause instability. The 260-pin form factor ensures physical compatibility with the system's SODIMM slots.

Single module enables incremental upgrades

The package contains one 8 GB stick, allowing you to add capacity in 8 GB steps up to the platform limit. No heat spreader is included, which keeps the module height low for dense rack environments. There is no bundled software; the upgrade takes effect once the module is seated and the NAS is powered on.

How it compares

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

Price $53.99
Cheaper than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.75 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 lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered SODIMM
Part numberMSE21300-818K1
Total capacity8 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 rank1Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items8 GB (1 × 8 GB) DDR4 2666 MHz PC4-21300 1Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM

Questions about this item

What does the 2666 MT/s rating mean once the module is installed in a Synology RS822+?

The module runs at DDR4 2666 (PC4-21300) speed, delivering the rated bandwidth inside the RS822+ NAS.

How does the ECC SODIMM interface affect data integrity in this NAS?

ECC Unbuffered operation detects and corrects single-bit errors on the fly, protecting stored data without adding latency.

Will the 260-pin SODIMM fit the RS822+ memory slot without a heat spreader?

Yes, the 260-pin DDR4 ECC SODIMM form factor matches the RS822+ slot and the low-profile design clears the chassis.

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