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Green circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC UDIMM CL19 1.2V 288-pin memory upgrade

SKU CH-081R-99GCJ

16 GB DDR4 2666 ECC UDIMM for Synology NAS with CL19 latency and 1.2 V operation

  • 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 guards data integrity under load
  • DDR4 2666 speed matches Synology D4EU01-16G spec
  • Low 1.2 V voltage reduces power draw
  • 288-pin UDIMM form factor fits supported bays

NEMIX RAM 16GB DDR4 2666 ECC UDIMM

This NEMIX RAM module provides 16GB of DDR4 2666 memory with ECC error correction. It is built as an unbuffered UDIMM for compatible Synology NAS systems. The single-rank design uses major OEM chips from Samsung, Micron or Hynix.

Check your Synology model and slot count

Verify that your Synology NAS supports DDR4 2666 ECC unbuffered UDIMMs before ordering. Confirm the maximum memory capacity per slot and the total number of available 288-pin slots. The module operates at 1.2V with a CAS latency of CL19.

Suits Synology NAS owners needing ECC reliability

This upgrade suits administrators who need 16GB of validated ECC memory for a supported Synology device. It is not for systems that require registered or buffered DIMMs. Buyers needing non-ECC memory or a different speed grade should look elsewhere.

How it compares

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

Price $133.99
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 $8.37 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 UDIMM
Part numberME21300-628K1
Total capacity16 GB
Product type288-Pin DDR4 ECC UDIMM
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 288-PIN ECC Unbuffered UDIMM

Questions about this item

Does the package include more than the single 16GB module or any extra parts?

The package contains one 16GB DDR4 2666 ECC UDIMM and nothing else.

Should I choose a different capacity or speed for my Synology NAS?

This module is 16GB at 2666MHz CL19; select a different kit only if your NAS needs more capacity or a different speed.

Will the 2666MHz rating run at that speed in my Synology system?

The module is rated 2666MHz PC4-21300 CL19 at 1.2V and will operate at that speed when the platform supports it.

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