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

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.