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Green rectangular circuit board with black chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC Unbuffered SODIMM memory upgrade

SKU CH-1RH8-8DRT6

16 GB DDR4 2666 ECC unbuffered SODIMM for Synology NAS, CL19 1.2 V 260-pin 2Rx8 module

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16GB DDR4 capacity expands NAS storage performance
  • ECC unbuffered design protects data integrity under load
  • 2666MHz CL19 speed matches Synology D4ES01-16G spec
  • 2V low voltage reduces system power draw
  • 260-pin SODIMM form factor fits compatible Synology NAS slots

Synology NAS 16 GB DDR4-2666 ECC SODIMM

This 16 GB DDR4 2666 module adds error-correcting memory to compatible Synology NAS units. It uses a 260-pin SODIMM form factor and runs at 1.2 V with CL19 timing. The unbuffered design suits systems that require non-registered ECC memory.

Replaces lower-capacity or non-ECC SODIMMs

Upgrading from a smaller module or from standard DDR4 without ECC adds both capacity and data-integrity protection. The jump is worth it when the NAS workload includes file serving, virtualization or backup tasks that benefit from corrected single-bit errors.

Limited to DDR4-2666 SODIMM slots with ECC support

The module only works in platforms that accept 260-pin DDR4 ECC unbuffered SODIMMs at 2666 MT/s. Systems restricted to lower speeds, non-ECC memory, or registered DIMMs cannot use this part.

How it compares

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

Price $111.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.00 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 numberMSE21300-628K1
Total capacity16 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 items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx8 1.2 V CL19 260-PIN ECC Unbuffered SODIMM

Questions about this item

Does the 260-pin DDR4 SODIMM fit the memory slot in my Synology NAS?

Yes, the module is a 260-pin DDR4 ECC SODIMM built for Synology systems that accept this form factor.

What is the correct orientation when inserting the module, and which notch alignment do I check?

Align the single key notch on the gold edge with the slot ridge, press firmly until both side clips click into place.

Will the ECC function remain active over the module's lifetime, or does it degrade?

ECC is a hardware feature of the DRAM chips and does not wear out; no maintenance is required.

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