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Green rectangular SODIMM module with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 2666MHz ECC Unbuffered SODIMM 2Rx8 CL19 1.2V 260-pin Synology DS2419+II memory upgrade

SKU CH-PYR0-4VHKZ

16 GB DDR4 2666 MHz ECC unbuffered SODIMM for Synology DS2419+II NAS upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB capacity expands NAS storage headroom
  • ECC protection detects and corrects data errors
  • 2666 MHz DDR4 speed matches DS2419+II spec
  • 2 V operation reduces power draw
  • 260-pin SODIMM form factor fits Synology slot

16GB DDR4 ECC SODIMM for Synology DS2419+II

This 16 GB DDR4 2666 MHz ECC unbuffered SODIMM is built for the Synology DiskStation DS2419+II. It adds error-correcting memory to a NAS that runs 24/7 workloads such as file serving, backup and virtualization. The module uses major OEM chips from Samsung, Micron or Hynix and carries part number MSE21300-628K1. It targets administrators who need validated compatibility rather than generic consumer memory.

Thermals noise and power at 1.2 V

Operating at 1.20 V, the module draws minimal power and produces little heat inside the sealed NAS chassis. No heat spreader is fitted, so airflow from the system fans passes directly over the DRAM packages. The low voltage and unbuffered design keep acoustic impact negligible during sustained read and write cycles. Power consumption stays within the platform's standard memory budget without extra cooling requirements.

Single module packaging and validated compatibility

The package contains one 260-pin SODIMM rated CL19 2Rx8 with no additional cables, tools or software. Compatibility is verified for the DS2419+II, reducing the risk of POST failures or data corruption that can occur with unqualified sticks. Installers simply insert the module into an available slot following the NAS manual. No firmware updates or configuration utilities are supplied or required.

How it compares

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

Price $132.99
Cheaper than about 64% 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 $8.31 per GB
Typical for this category: the median of 20,941 items is $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 numberMSE21300-628K1
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

How is the 260-pin SODIMM installed in the Synology DS2419+II, and what step is often missed?

Power off the NAS, remove the cover, align the notch on the 260-pin module with the slot key, press firmly until the side clips click, then replace the cover before powering on; the step often missed is fully seating the module so both clips engage.

What maintenance or replacement will this 16GB DDR4 ECC module need over time?

No routine maintenance is required; the module has no heat spreader and runs at 1.20V, so only a future capacity upgrade or a rare failure would prompt replacement.

What limit appears first when the DS2419+II runs sustained workloads with this CL19 2666MHz memory?

The memory controller caps throughput at the 2666MHz JEDEC rating, so sustained heavy workloads hit that bandwidth ceiling before thermal or voltage limits become a factor.

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