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Green 260-pin DDR4 ECC SODIMM module, black chips, no heat spreader

OWC

OWC 16GB DDR4 2666 CL19 ECC SODIMM RS822+ RS822RP+ memory upgrade

SKU CH-EC14-5Q39X

16 GB DDR4 2666 ECC SODIMM for Synology RackStation RS822+ and RS822RP+, CL19 1.2 V unbuffered

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB capacity expands Synology RS822+/RS822RP+ NAS memory
  • DDR4 2666 CL19 ECC ensures data integrity for server workloads
  • 2V low voltage reduces power draw in rack environments
  • 260-pin SODIMM fits directly into compatible Synology RackStation slots
  • Backward compatible with 2400MHz and 2133MHz systems

16 GB DDR4 2666 ECC SODIMM for Synology RS822+

This 16 GB DDR4 2666 CL19 ECC unbuffered SODIMM is built for Synology RackStation RS822+ and RS822RP+ systems. It uses a 260-pin form factor and operates at 1.2 V with a 2Rx8 rank configuration. The module meets JEDEC standards and provides error-correcting code protection for data integrity in NAS environments.

Verify your NAS model

Confirm that your unit is an RS822+ or RS822RP+ and that a 260-pin SODIMM slot is available. The memory runs at 2666 MHz and is backward compatible with 2400 MHz and 2133 MHz systems, but the host platform must support ECC unbuffered modules. No heat spreader is fitted, so ensure the chassis airflow is adequate for bare DRAM.

Sustained workloads benefit from ECC

Under continuous operation the ECC function detects and corrects single-bit errors, reducing the risk of silent data corruption during long file transfers or RAID rebuilds. The 1.2 V supply and CL19 timing maintain consistent latency without thermal throttling, as there is no spreader to trap heat. This makes the module suited to 24/7 NAS duty rather than short benchmark runs.

How it compares

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

Price $125.99
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 $7.87 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 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 RackstationRS822+
Synology RackstationRS822RP+

Questions about this item

Does the single 16GB 2Rx8 module fill one slot so I can add another later?

The module is a single 16GB 2Rx8 stick that occupies one 260-pin SODIMM slot, leaving any additional slot free for a future upgrade.

Why choose the 16GB CL19 ECC version over a lower-capacity or non-ECC stick for my RS822+?

This 16GB DDR4 2666 CL19 ECC unbuffered SODIMM matches the RS822+ and RS822RP+ qualified specification and provides error-correcting code protection for data integrity.

Will the 2666MHz PC4-21300 rating actually run at that speed in my Synology RS822RP+?

The module is rated DDR4 2666 PC4-21300 CL19 and is backwards compatible with 2400MHz and 2133MHz, so it will operate at the highest speed the RS822RP+ supports.

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