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

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC UDIMM CL19 1.2V 288-pin memory upgrade for Synology RS2423RP+

SKU CH-B2FS-NY7Y3

16 GB DDR4 2666 ECC UDIMM CL19 1.2 V 288-pin module for Synology RS2423RP+ NAS

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB DDR4 capacity expands Synology RS2423RP+ memory
  • ECC protection guards data integrity in NAS workloads
  • 2666 MHz speed matches system-rated PC4-21300 performance
  • 2 V low voltage reduces power draw and heat
  • 288-pin UDIMM form factor fits Synology Rackstation slots

Synology RS2423RP+ 16 GB DDR4 ECC UDIMM

This NEMIX RAM module adds 16 GB of DDR4 2666 memory with ECC protection to the Synology RackStation RS2423RP+. It runs at 1.2 V with CL19 timing and uses a 288-pin unbuffered design validated for that specific NAS platform.

Suited for RS2423RP+ owners needing ECC capacity

The stick targets administrators expanding a single RS2423RP+ unit. Builders working with other NAS models, desktop boards or servers that require registered DIMMs, different speeds or non-ECC memory should look at alternatives.

Fits the RS2423RP+ DIMM slots directly

No heat spreader means standard clearance inside the rack chassis. The 2Rx8 organisation works with the system memory controller, leaving any remaining slots free for further identical modules if the platform supports them.

How it compares

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

Price $129.99
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 $8.12 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 Synology RS2423RP+ need any specific BIOS setting or firmware version to recognise the 2666 MHz DDR4 ECC UDIMM?

The module is built to the Synology DDR4 2666 specification and installs without extra configuration; the NAS firmware detects the 2Rx8 ECC UDIMM automatically.

Can I mix this 16 GB 2666 MHz CL19 ECC stick with the factory 4 GB or 8 GB modules already in my RS2423RP+?

Yes, the NAS supports mixed capacities; the 2Rx8 1.2 V CL19 module will run at the lowest common speed alongside existing DDR4 ECC UDIMMs.

How do I confirm the new 16 GB DDR4 2666 ECC UDIMM is active and error-correcting after installation?

Open DSM Control Panel → Info Center → Memory; the total should show the added 16 GB and the status will list ECC as enabled.

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