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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 RDIMM 2Rx4 CL19 1.2V Synology FS3410 memory upgrade

SKU CH-PD4G-0T80T

16GB DDR4 2666 ECC RDIMM module built for Synology FS3410 NAS expansion

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection guards data integrity on Synology FS3410
  • Registered DDR4 2666 MHz handles heavy NAS workloads
  • 16 GB single module expands capacity without mixing ranks
  • 2 V operation keeps power draw low in 24/7 service
  • 288-pin RDIMM fits FS3410 slots for simple upgrade

Synology FS3410 DDR4 ECC RDIMM

This 16 GB DDR4 2666 MHz registered DIMM adds ECC-protected capacity to a Synology FlashStation FS3410 NAS. It operates at 1.2 V with CL19 latency and uses a 2Rx4 organisation on a 288-pin module. The stick is built with major OEM DRAM and validated for the target platform.

IT buyers needing registered ECC memory

The module suits administrators expanding a compatible Synology NAS where registered ECC RDIMMs are required. It will not work in systems that accept only unbuffered non-ECC UDIMMs or that require a different DDR generation, speed or voltage. Builders needing higher densities per slot or lower latencies should look elsewhere.

16 GB single-module capacity

One stick provides 16 GB of addressable memory with ECC overhead for data integrity under sustained workloads. The dual-rank x4 layout helps populate channels efficiently on supported boards. Headroom ends at the module's 16 GB limit; larger configurations require additional DIMM slots and matching modules.

How it compares

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

Price $106.99
Cheaper than about 67% 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 $6.69 per GB
Cheaper than about 59% of the 20,941 comparable items (median $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 RDIMM Registered Server Memory
Part numberMR21300-624K1
Total capacity16 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology
In the box
Included items16 GB (1 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the FS3410 require any specific BIOS setting or firmware version to recognise this 2666 MHz ECC RDIMM?

The module is validated for the FS3410; the NAS firmware will detect the 2666 MHz speed and CL19 timings automatically during POST.

Will this registered ECC stick operate alongside non‑ECC unbuffered DIMMs already installed in the FS3410?

The FS3410 memory slots accept only registered ECC RDIMMs, so mixing with unbuffered non‑ECC modules is not supported.

After installation, how can I confirm the FS3410 is using the full 16 GB at 2666 MHz with ECC active?

In DSM open Control Panel → Info Center → Memory; it will show 16 GB, 2666 MHz, ECC enabled and the MR21300‑624K1 part number.

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