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Green circuit board with black memory chips, no heat spreader, gold edge connectors

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC SODIMM Synology DS923+ memory upgrade

SKU CH-3VDE-7S8R4

Adds 8 GB of DDR4 2666 ECC SODIMM memory to a Synology DS923+ NAS for data-integrity protection

  • Capacity8GB
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • ECC protection guards data integrity for NAS reliability
  • 2666 MHz DDR4 speed matches DS923+ specifications
  • 2 V operation reduces power draw and heat
  • 260-pin SODIMM form factor fits Synology memory slots
  • Single-rank 1Rx8 layout ensures broad compatibility

Synology DS923+ memory upgrade

This 8 GB DDR4 2666 ECC SODIMM is built for the Synology DiskStation DS923+ NAS. It adds capacity for virtual machines, containers and heavy file workloads. The unbuffered design fits the platform without registration overhead. IT teams choose it for reliable expansion in mission-critical storage.

Low-voltage operation at 1.2 V

The module runs at standard DDR4 voltage with no heat spreader, drawing minimal power inside the NAS chassis. CL19 latency and single-rank 1Rx8 organisation keep signal integrity clean. Passive cooling is sufficient because the stick produces little thermal load. Silent operation is maintained in noise-sensitive rooms.

Validated compatibility removes guesswork

Every stick is stress-tested under load before shipping to confirm stability in the DS923+. The package contains only the SODIMM itself; no cables, brackets or software are included. System-specific tuning means the NAS recognises the module immediately at 2666 MT/s. Buyers needing non-ECC memory or a different form factor should look elsewhere.

Highlights

  • ECC protection guards data integrity for NAS reliability
  • 2666 MHz DDR4 speed matches DS923+ specifications
  • 2 V operation reduces power draw and heat
  • 260-pin SODIMM form factor fits Synology memory slots
  • Single-rank 1Rx8 layout ensures broad compatibility

Specifications

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC Unbuffered SODIMM
Part NumberMSE21300-818K1
Capacity8GB
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type260-PIN DDR4 ECC SODIMM
Rank1Rx8
FeaturesDDR4 ECC Unbuffered SODIMM Motherboard Compatible
Package Content8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM

Questions about this item

How do I install this 260-pin DDR4 ECC SODIMM in my Synology DS923+ and what step do people often miss?

Power off the NAS, remove the cover, insert the module at an angle until the gold contacts are hidden, then press down until the side clips click; the step often missed is fully seating both clips so the ECC module makes firm contact.

What maintenance or replacement will this 1Rx8 1.20 V ECC module need over time?

No scheduled maintenance is required; the module is designed for continuous operation, and replacement is only necessary if a memory error appears in DSM logs or the NAS fails to boot.

What limit appears first when this CL19 2666 MHz ECC SODIMM runs sustained workloads on a DS923+?

The DS923+ memory controller caps the data rate at 2666 MHz, so the module cannot exceed its rated speed; thermal throttling is unlikely because the unbuffered SODIMM runs at 1.20 V without a heat spreader.

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