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Green circuit board SODIMM with black memory chips, 260 pins, no heat spreader

OWC

OWC 16GB DDR4 2666MHz CL19 ECC SODIMM 2Rx8 1.2V for Synology Deep Learning NVR DVA3219 DVA3221 memory upgrade

SKU CH-PD4Q-Q02J4

16 GB DDR4 2666 MHz ECC SODIMM for Synology DVA3219 and DVA3221 NAS upgrades

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16 GB DDR4 ECC SODIMM boosts Synology DVA3219 and DVA3221 NVR capacity
  • 2666 MHz CL19 timing delivers responsive multitasking for deep learning workloads
  • ECC unbuffered design protects data integrity in 24/7 surveillance recording
  • 2 V low voltage reduces power draw and heat in compact NAS chassis
  • JEDEC and RoHS compliant module ensures warranty safe upgrade for supported systems

Synology NVR Memory Upgrade

This OWC module adds 16GB of DDR4 ECC SODIMM memory to Synology Deep Learning NVR models DVA3219 and DVA3221. It runs at 2666MHz with CL19 latency and operates at 1.2V. The unbuffered 2Rx8 design fits the 260-pin slots in these appliances.

Replaces Lower-Capacity DDR4 ECC SODIMMs

The upgrade is worthwhile when the NVR runs multiple analytics tasks or virtual machines and the installed memory limits concurrent workloads. Backward compatibility with 2400MHz and 2133MHz systems allows use in older slots, though the module will downclock to the bus speed.

Sustained Load Behaviour

ECC circuitry corrects single-bit errors during continuous operation, protecting data integrity in always-on recording and inference jobs. The JEDEC-standard 1.2V voltage keeps power draw steady under load. Without a heat spreader, airflow in the NVR chassis manages thermals during extended sessions.

How it compares

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

Price $132.99
Cheaper than about 64% 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 $8.31 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 Deep Learning NVRDVA3219
Synology Deep Learning NVRDVA3221

Questions about this item

Will the 260-pin DDR4 SODIMM fit the memory slots in my Synology DVA3219?

Yes, this module uses the standard 260-pin DDR4 SODIMM form factor required by the DVA3219 and DVA3221.

Is there a specific orientation or slot order I must follow when installing this single 16GB stick?

Align the notch on the module with the key in the slot, press firmly until the side clips click, and use the primary slot first if the bay is empty.

Does the ECC unbuffered design require any firmware updates or periodic re-seating over time?

No firmware update is needed for the ECC unbuffered module; it runs at 1.2V and is designed to remain seated for the system's life.

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