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Green printed circuit board with black memory chips in a 288-pin DDR4 UDIMM form factor

NEMIX RAM

NEMIX RAM 16GB DDR4 2666 ECC UDIMM CL19 1.2V 288-Pin Synology SA3200D memory upgrade

SKU CH-5QVJ-QT0YJ

Adds 16 GB of DDR4 2666 ECC unbuffered memory to a Synology SA3200D NAS with CL19 latency at 1.2 V

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeUnbuffered
  • Rated voltage1.2 V
  • 16 GB DDR4 2666 MHz ECC UDIMM for Synology SA3200D NAS
  • Error-correcting code protects data integrity in critical workloads
  • Low 1.2 V operation reduces power draw and heat
  • 288-pin unbuffered design installs in minutes without tools
  • Tested with Samsung, Micron or Hynix chips for proven reliability

Synology SA3200D ECC UDIMM upgrade

This 16GB DDR4 2666 module adds ECC-protected memory to the Synology SA3200D NAS. It runs at 1.2V with CL19 latency and uses a 288-pin unbuffered design. The single-rank 2Rx8 organisation fits the platform's validated memory list.

Replacing non-ECC or lower-capacity DIMMs

Swapping standard unbuffered sticks for this ECC UDIMM enables error correction that guards data integrity in RAID rebuilds and long-running services. The jump is worth it when the NAS handles critical file shares, backups or virtual machines that cannot tolerate silent corruption.

16GB capacity for moderate workloads

One module delivers 16GB of headroom for typical multi-user file serving, Docker containers and snapshot tasks. Heavy virtualization clusters or large-scale deduplication will exhaust this capacity and require additional DIMMs to scale further.

How it compares

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

Price $120.99
Cheaper than about 65% 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 $7.56 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

Will this 288-pin DDR4 ECC UDIMM fit the memory slots in my Synology SA3200D NAS?

Yes, the 288-pin DDR4 ECC UDIMM form factor matches the SA3200D memory slots exactly.

What is the correct way to seat the 16GB 2Rx8 module so the ECC function works?

Align the notch with the slot key, press down firmly until both retention clips click, then verify 2666 MHz operation in DSM.

When should I consider replacing this 1.2V DDR4 2666 CL19 stick?

Replace it if DSM reports correctable ECC errors rising over time or the NAS fails memory diagnostics.

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