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Green circuit board memory stick with black chips, no heat spreader, 260-pin SODIMM form factor

NEMIX RAM

NEMIX RAM 8GB DDR4 2666 ECC SODIMM Synology DS723+

SKU CH-WE4C-NC5XY

Adds 8 GB of DDR4-2666 ECC SODIMM memory to a Synology DS723+ NAS for data-integrity protection

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • ECC protects data integrity in NAS workloads
  • 2666 MHz DDR4 speed matches DS723+ specification
  • 20 V low voltage reduces power draw
  • 260-pin SODIMM form factor fits Synology slot
  • 1Rx8 single-rank layout ensures broad compatibility

NEMIX RAM 8GB DDR4 2666 ECC SODIMM

This 8GB DDR4 2666MHz ECC unbuffered SODIMM is validated for the Synology DS723+ NAS. It operates at 1.2V with CL19 latency and uses a 260-pin form factor. The module is built with major OEM chips from Samsung, Micron or Hynix and is rigorously stress tested for stability in mission-critical environments.

IT professionals upgrading a Synology DS723+

This single 8GB stick suits administrators adding capacity to a compatible Synology DiskStation that supports DDR4 2666 ECC SODIMMs. Buyers needing non-ECC memory, higher speeds, larger single-module capacities or modules for other platforms should look elsewhere.

260-pin DDR4 ECC SODIMM interface

The module requires a 260-pin DDR4 ECC SODIMM socket matching the PC4-21300 specification. Compatibility is limited to systems that accept unbuffered ECC SODIMMs at this exact pin count and voltage.

How it compares

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

Price $59.99
Cheaper than about 75% 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 $7.50 per GB
Cheaper than about 54% of the 20,941 comparable items (median $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 numberMSE21300-818K1
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

Does the 8 GB DDR4 2666 CL19 ECC SODIMM come alone or with extra items?

The package contains one 8 GB DDR4 2666 CL19 1.2 V 260-pin ECC unbuffered SODIMM and nothing else.

Should I pick the single 8 GB module or add a second stick for the DS723+?

The DS723+ has two slots; one 8 GB stick works, but two identical modules enable dual-channel bandwidth.

What does the PC4-21300 rating deliver inside the Synology DS723+?

PC4-21300 confirms 2666 MT/s throughput at CL19 latency with ECC error correction active.

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