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Two green DDR4 RDIMM modules with gold contacts and black chips

NEMIX RAM

NEMIX RAM MR21300-624K2 32GB (2x16GB) DDR4 2666 ECC RDIMM memory upgrade

SKU CH-9CEK-G093J

32 GB kit of DDR4 2666 ECC registered DIMMs for Synology FlashStation FS3410 NAS

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection prevents data corruption in Synology FS3410 NAS
  • Registered DDR4 2666 delivers stable server-grade performance
  • 32 GB kit (2×16 GB) expands capacity for heavy workloads
  • 2 V operation reduces power draw and heat output
  • CL19 latency with 2Rx4 organisation optimises throughput

Synology FlashStation FS3410 kit

This 32 GB kit contains two 16 GB DDR4 2666 ECC registered DIMMs validated for the Synology FlashStation FS3410 NAS. Each module runs at 1.2 V with CL19 latency and uses a 2Rx4 organisation. The kit targets IT teams expanding memory in that specific appliance.

288-pin RDIMM form factor

Modules plug directly into the server-grade DIMM slots of the compatible Synology system without adapters. Registered buffering reduces electrical load on the memory controller, freeing the platform to populate all available slots. ECC circuitry corrects single-bit errors to protect data integrity in continuous operation.

32 GB total capacity

Two ranks per module provide density for virtualisation workloads and large file caches. The 2666 MT/s rate matches the platform specification, so throughput scales linearly with each populated channel. Workloads exceeding the installed 32 GB will trigger paging to storage, reducing responsiveness.

How it compares

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

Price $190.99
Cheaper than about 59% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $5.97 per GB
Cheaper than about 66% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSynology Compatible Series NAS Memory
Model nameSynology DDR4 2666 MHz ECC RDIMM Registered Server Memory
Part numberMR21300-624K2
Total capacity32 GB (2 × 16 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 items32 GB (2 × 16 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the CL19 latency become a bottleneck during sustained heavy workloads?

The modules run at CL19 timings and 2666 MT/s; latency is fixed by the JEDEC profile and does not change under load.

How much heat do the 1.2 V registered DIMMs produce when running continuously?

Operating at 1.2 V without heat spreaders, the RDIMMs generate typical DDR4 server heat; ensure your NAS chassis provides adequate airflow.

Which Synology NAS models accept this 288-pin ECC RDIMM kit?

The kit is validated for the Synology FlashStation FS3410; other models must support DDR4 2666 ECC registered memory.

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