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Two green DDR4 SODIMM modules, no heat spreader

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR4 2666 ECC SODIMM Synology DS923+

SKU CH-Q0AP-KJ9CP

A 32 GB DDR4 ECC SODIMM kit for Synology DS923+ NAS, running at 2666 MT/s with CL19 latency

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 32 GB kit doubles NAS capacity for heavier workloads
  • ECC protection detects and corrects memory errors automatically
  • 2666 MHz DDR4 speed matches Synology DS923+ specifications
  • Low 1.2 V operation reduces heat and power draw
  • Two 16 GB modules enable dual-channel performance

Synology DS923+ ECC SODIMM kit

This 32 GB kit contains two 16 GB DDR4 2666 ECC unbuffered SODIMM modules built for the Synology DiskStation DS923+. Each stick runs at 1.2 V with CL19 latency and a 2Rx8 organisation. The 260-pin form factor fits the NAS memory slots directly.

Sustained-load behaviour

Modules are stress tested under load to verify stability during continuous NAS workloads such as file serving, backup and virtualization. ECC circuitry detects and corrects single-bit errors to protect data integrity over long operating periods. Unbuffered design keeps latency low for responsive multi-user access.

Deciding specification

ECC unbuffered DDR4 SODIMM at 2666 MT/s is the single requirement for DS923+ compatibility; non-ECC or registered DIMMs will not work in this system. Buyers needing higher capacity per slot or a different memory generation must choose another kit.

How it compares

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

Price $262.99
Cheaper than about 56% 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 $8.22 per GB
Typical for this category: the median of 20,941 items is $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 1.2 V DDR4 2666 kit draw when the DS923+ runs all day?

Each module runs at 1.20 V and the CL19 2666 MT/s rating keeps power draw low, so the 32 GB kit adds minimal heat inside the NAS chassis.

What must already be in the DS923+ for this 260-pin ECC SODIMM kit to work?

The DS923+ needs two free SODIMM slots and a BIOS that accepts 2Rx8 ECC unbuffered DDR4 2666 modules.

Will the CL19 2Rx8 sticks run stably alongside the original memory already installed in the DS923+?

Yes, the kit is validated for the DS923+ and matches the platform's DDR4 2666 ECC unbuffered specification, so it will operate with existing modules at the same speed and timings.

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