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Two green DDR4 SODIMM sticks, black chips, no heat spreader

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 ECC Unbuffered SODIMM Synology RS822+

SKU CH-CWJ7-XZAZX

A 32 GB dual-channel DDR4 2666 ECC unbuffered SODIMM kit built for Synology RS822+ NAS systems

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protection guards data integrity during critical NAS operations
  • 32GB kit (2×16GB) expands Synology RS822+ memory capacity
  • DDR4 2666 speed matches system specification for stable performance
  • 2V low-voltage modules reduce power draw and heat
  • Unbuffered SODIMM design fits RS822+ slots without registration overhead

Synology RS822+ 32 GB DDR4 ECC kit

This 32 GB kit contains two 16 GB DDR4 2666 ECC unbuffered SODIMM modules built for the Synology RackStation RS822+. Each stick runs at 1.20 V with CL19 timing and uses a 260-pin layout. The modules are validated for NAS workloads that require error-correcting memory.

NAS owners adding ECC capacity

The kit suits administrators who need to expand an RS822+ to its supported memory limit with guaranteed compatibility. Builders working on non-Synology platforms or systems that require registered DIMMs should choose a different module type.

2Rx8 dual-rank organisation

Each 16 GB module uses a 2Rx8 configuration that the RS822+ memory controller recognises without manual setup. Single-rank or registered alternatives will not provide the same density in this chassis.

How it compares

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

Price $225.99
Cheaper than about 57% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $7.06 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 lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC Unbuffered SODIMM
Part numberMSE21300-628K2
Total capacity32 GB (2 × 16 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 items32 GB (2 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM KIT

Questions about this item

How much power does the 1.2V DDR4 2666 kit draw when the NAS runs continuously?

Each 16GB module operates at 1.2V, the standard DDR4 voltage, so the pair adds minimal power draw to the RS822+ during all-day operation.

Does the Synology RS822+ need any firmware update or extra bracket before I install these 260-pin SODIMMs?

No extra bracket or firmware is required; the 260-pin ECC unbuffered SODIMMs slot directly into the RS822+ memory sockets.

Will the CL19 2Rx8 modules work alongside the original 8GB stick that came with my RS822+?

The RS822+ has two SODIMM slots, so the factory 8GB module must be removed to fit this 32GB (2x16GB) kit.

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