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Green circuit board with black chips and gold edge contacts

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM 2Rx8 1.2V memory upgrade for Synology RS820+ RS820RP+

SKU CH-E2ZF-N2B7A

16 GB DDR4 2666 MHz ECC SODIMM adds 16 GB of error-correcting memory to Synology RS820+ and RS820RP+ NAS units

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB capacity expands NAS workload headroom
  • DDR4 2666 MHz CL19 matches Synology RS820+/RS820RP+ specs
  • ECC unbuffered design protects data integrity
  • 2 V operation keeps power draw low
  • 260-pin SODIMM form factor fits the supported RackStation slots

Targeted NAS Memory Upgrade

This 16GB DDR4 SODIMM is built specifically for the Synology RackStation RS820+ and RS820RP+ platforms. It delivers 2666MHz speed with CL19 latency and ECC error correction. The unbuffered 2Rx8 module installs directly into the 260-pin slot without tools. System administrators can expand capacity using a single JEDEC-standard stick.

DDR4 Speed Floor and Compatibility

The module runs at PC4-21300 2666MHz and is backwards compatible with 2400MHz and 2133MHz system buses. If the NAS bus operates at a lower frequency, the memory will down-clock automatically. ECC functionality remains active across supported speeds. Boards that require registered or buffered DIMMs cannot use this unbuffered design.

Low-Profile Build for Dense Racks

No heat spreader is fitted, keeping the module height minimal for tight 1U or 2U chassis spacing. The 1.2V operating voltage matches standard DDR4 power envelopes. Gold-edge contacts on the 260-pin connector resist oxidation in continuous-operation environments. Single-sided component layout eases insertion when adjacent slots are populated.

How it compares

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

Price $110.99
Cheaper than about 66% 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 $6.94 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 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 RackstationRS820+
Synology RackstationRS820RP+

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