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Green circuit board with gold edge connectors and black memory chips

OWC

OWC 16GB DDR4 2666MHz ECC UDIMM CL19 2Rx8 1.2V 288-Pin memory upgrade

SKU CH-HVKX-K6J39

16GB DDR4 2666MHz ECC UDIMM CL19 1.2V for Synology SA3200D NAS upgrades

  • Total capacity16 GB (1 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 16GB DDR4 ECC UDIMM adds reliable capacity to Synology SA3200D
  • 2666MHz CL19 speed matches system spec for stable operation
  • JEDEC and ROHS compliant module keeps warranty intact
  • Unbuffered 2Rx8 1.2V design fits standard 288-pin slots
  • Backward compatible with 2133MHz and 2400MHz systems

OWC 16GB DDR4 ECC UDIMM for Synology SA3200D

This single 16GB DDR4 2666MHz ECC unbuffered DIMM is built for the Synology RackStation SA3200D. It targets administrators who need error-correcting memory to protect data integrity in NAS, server or workstation workloads.

Fits 288-pin DDR4 slots and runs at 1.2V CL19

The module uses the standard 288-pin UDIMM form factor and operates at 1.2 volts with CL19 latency. It requires a platform that supports DDR4 ECC unbuffered memory and frees a slot by delivering 16GB in one stick.

Replaces 2133MHz or 2400MHz DDR4 ECC UDIMMs

Backward compatibility with 2133MHz and 2400MHz modules means this 2666MHz kit can upgrade slower ECC memory. The jump is worth it when the system can run at the higher speed and the workload benefits from extra bandwidth.

How it compares

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

Price $121.99
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 $7.62 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 number2E6D42R816 GB
Total capacity16 GB (1 × 16 GB)
Product type288-Pin DDR4 ECC UDIMM
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 RackstationSA3200D

Questions about this item

What is the CAS latency of the DDR4 2666MHz ECC UDIMM under sustained load?

The module runs at CL19 latency, which remains constant during continuous operation.

How much power does the 1.2V 16GB ECC UDIMM draw when the NAS runs all day?

It operates at the standard DDR4 voltage of 1.2V, keeping heat output low in a Synology RackStation SA3200D.

Which specific Synology model must I already own for this 288-pin 2Rx8 DIMM to work?

This upgrade is validated for the Synology RackStation SA3200D.

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