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Green bare circuit board DDR4 RDIMM memory module 288-pin 32GB

NEMIX RAM

NEMIX RAM 32GB DDR4 2666MHz ECC RDIMM CL19 2Rx4 1.2V 288-Pin Synology FS3400 Memory Upgrade

SKU CH-9NH1-0Y90K

32 GB DDR4 2666 MHz ECC registered DIMM with CL19 latency, 1.2 V operation, 2Rx4 organisation and 288 pins for Synology FS3400 NAS upgrades

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • ECC protection guards data integrity in Synology FS3400
  • Registered DDR4 architecture supports stable server workloads
  • 32 GB capacity extends NAS memory for heavier tasks
  • 2666 MHz speed matches Synology FS3400 specifications
  • 2 V low voltage reduces power draw and heat

Synology FS3400 DDR4 ECC RDIMM

This 32 GB DDR4 2666 MHz ECC RDIMM is built for the Synology FlashStation FS3400 NAS. The registered design adds signal integrity for multi-module server boards. ECC protects stored data against single-bit errors during intensive workloads. It targets administrators who need validated capacity expansion for this platform.

Thermals noise and power draw

Operating at 1.20 V the module draws minimal power inside a populated NAS chassis. No heat spreader is fitted so airflow across the bare PCB manages thermals. Registered buffering reduces electrical loading on the memory bus during sustained transfers. Silent passive cooling suits the rackmount environment.

Build quality and daily implications

The 288-pin RDIMM keying prevents insertion into incompatible desktop slots. 2Rx4 organisation fits the FS3400 memory controller without configuration changes. Major OEM chips from Samsung Micron or Hynix are stress tested under load before shipping. Single-module packaging allows staggered upgrades across available slots.

How it compares

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

Price $199.99
Cheaper than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $6.25 per GB
Cheaper than about 63% 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 numberMR21300-324K1
Total capacity32 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 (1 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install this 288-pin DDR4 RDIMM in a Synology FS3400, and what step is commonly missed?

Power down the NAS, open the chassis, align the module notch with the slot key, press firmly until both retention clips lock, then verify the 32GB capacity in DSM before closing the case.

What maintenance or replacement will this 32GB ECC RDIMM need over time?

No scheduled maintenance is required; the module is validated for continuous operation and carries a lifetime replacement guarantee if a fault ever develops.

What limit appears first when this CL19 2666MHz registered memory runs sustained workloads?

The CAS latency of 19 cycles at 2666 MT/s sets the baseline response time, so latency-sensitive tasks hit that timing ceiling before bandwidth saturates.

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