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Green circuit board with gold edge connectors and black memory chips

OWC

OWC 8GB DDR4 2666MHz CL19 ECC SODIMM memory upgrade for Synology DS1522+

SKU CH-0C4M-YMMSC

Adds 8 GB of DDR4 2666 MHz ECC SODIMM memory to the Synology DS1522+ for faster multitasking and larger workloads

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8

Capacity 8GB

  • Boosts NAS responsiveness with 8 GB DDR4 2666 MHz CL19 ECC module
  • Error-correcting code protects data integrity on Synology DS1522+
  • JEDEC-standard 1.2 V SODIMM ensures warranty-safe upgrade
  • Backward compatible with 2400 MHz and 2133 MHz systems
  • Simple 260-pin DIY installation fits micro server and NAS slots

System-specific DDR4 ECC SODIMM for Synology DS1522+

This 8 GB module is built for the Synology DiskStation DS1522+ and carries a 260-pin DDR4 ECC unbuffered design. It runs at 2666 MHz with CL19 latency and 1.2 V operation. The single-rank 1Rx8 layout matches the platform's memory controller requirements. Buyers needing non-ECC or registered DIMMs cannot use this part.

Sustained-load behaviour in a NAS enclosure

ECC circuitry detects and corrects single-bit errors during continuous file-serving, backup and virtualization workloads. JEDEC-standard signalling and 1.2 V power keep thermals steady inside the compact chassis. Backward compatibility with 2400 MHz and 2133 MHz buses allows the module to clock down automatically if the system demands it. No heat spreader is fitted, so airflow across the slots remains the only cooling path.

Capacity and form factor decide fit

The upgrade adds exactly 8 GB per slot in the 260-pin SODIMM form factor. Verify the DS1522+ slot count and maximum supported capacity before purchase. Systems that require registered memory or a different pin count will not accept this module.

How it compares

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

Price $54.99
Cheaper than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB
Lower than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.87 per GB
Cheaper than about 58% of the 20,941 comparable items (median $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 number2C6D41R808 GB
Total capacity8 GB
Product type260-Pin DDR4 ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology DiskStationDS1522+

Other versions of this model

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Questions about this item

How much heat and power does the 1.2V DDR4 2666MHz module draw during continuous NAS operation?

The module runs at the standard DDR4 1.2V with no heat spreader, so power draw and heat output stay low during all-day use in the DS1522+.

What must the Synology DS1522+ already have for this 260-pin ECC SODIMM to work?

The DS1522+ needs an available DDR4 SODIMM slot that accepts 260-pin ECC unbuffered memory; the system ships with such slots ready for this upgrade.

Will the CL19 2666MHz stick run correctly alongside existing 2400MHz or 2133MHz modules in the same NAS?

Yes, the module is backward compatible with 2400MHz and 2133MHz speeds, so it will downclock automatically to match slower sticks already installed.

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