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Green circuit board with black memory chips, 260-pin SODIMM form factor, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM 1.2V 2Rx8 memory upgrade for Synology FS1018

SKU CH-15DB-BBEQK

16 GB DDR4 ECC SODIMM at 2666 MHz CL19, 1.2 V, validated for Synology FS1018 NAS

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB single module expands Synology FS1018 capacity
  • DDR4 2666MHz CL19 speed matches system spec
  • ECC unbuffered design protects data integrity
  • 2V low voltage reduces power draw
  • 260-pin SODIMM form factor fits FS1018 slot

Synology FS1018 memory upgrade

This 16GB DDR4 ECC SODIMM is built specifically for the Synology Flashstation FS1018. It adds capacity to the NAS so the system can hold more data in memory at once. The module is unbuffered and follows JEDEC PC4-21300 timing at CL19. It targets administrators who need a straightforward capacity increase for that platform.

Thermals and power in normal use

The stick runs at the standard 1.2V DDR4 voltage and has no heat spreader. Power draw stays within the normal range for a 2666MHz ECC SODIMM. No active cooling is required and the module adds no audible noise. It is rated for continuous operation inside the FS1018 chassis.

What the bundle changes

The package contains only the single 16GB module; no tools, cables or software are included. Installation is a manual DIMM swap that does not void the NAS warranty. Backward compatibility with 2400MHz and 2133MHz systems means the same stick can be used if the platform is moved to a slower bus.

How it compares

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

Price $118.99
Cheaper than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (1 × 16 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $7.44 per GB
Cheaper than about 55% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2C6D42R816 GB
Total capacity16 GB (1 × 16 GB)
Product type260-Pin DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology FlashstationFS1018

Questions about this item

How do I install this 16GB DDR4 2666MHz CL19 ECC SODIMM into my Synology FS1018, and what step do people often miss?

Power off the NAS and unplug it. Open the chassis, locate the 260-pin DDR4 SODIMM slot, align the notch on the module, insert at an angle, then press down firmly until both side clips click. The step often missed is verifying the module is fully seated by checking both clips are locked.

What maintenance or replacement will this 1.2V 2Rx8 ECC Unbuffered module need over time?

No routine maintenance is required for this DDR4 SODIMM. It has no heat spreader or moving parts. Replacement is only needed if a memory error appears in DSM logs or the NAS fails to boot, which is rare for JEDEC-compliant ECC modules tested for the FS1018.

What limit appears first on this 16GB PC4-21300 CL19 module during sustained heavy workloads on the FS1018?

The primary limit is the single 16GB capacity ceiling. Under sustained heavy workloads, the FS1018 will exhaust available RAM before the 2666MHz CL19 speed or 1.2V thermal envelope becomes a bottleneck, triggering swap to slower storage.

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