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Green circuit board SODIMM module with black memory chips and gold edge connectors

OWC

OWC 16GB DDR4 2666 CL19 2Rx8 SODIMM memory upgrade for QNAP TVS-672X/XT/675/872X/XT

SKU CH-Y09J-D6XXP

A 16 GB DDR4 SODIMM running at 2666 MHz CL19 for compatible QNAP NAS models

  • Capacity16GB
  • Type260-Pin DDR4 Non-ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • 16GB single module expands NAS capacity for heavier workloads
  • DDR4 2666 CL19 timing matches QNAP TVS-672X/XT/675/872X/XT specs
  • 2V low-power operation reduces heat in compact enclosures
  • 2Rx8 dual-rank layout maximises density on 260-pin SODIMM
  • JEDEC and RoHS compliant for warranty-safe DIY upgrade

Targeted NAS upgrade

This 16GB DDR4 SODIMM is built for QNAP TVS-672X, TVS-672XT, TVS-675, TVS-872X and TVS-872XT models. It delivers 2666MHz speed with CL19 latency at 1.2V in a 260-pin unbuffered non-ECC package. The single module suits owners who need more memory for virtualization or heavy multi-user workloads on these specific NAS units.

Replaces factory modules

It substitutes the original QNAP RAM-16GDR4T0-SO-2666, RAM-16GDR4K0-SO-2666 and RAM-16GDR4K1-SO-2666 parts with a JEDEC-compliant alternative. The upgrade is worth it when the stock capacity limits concurrent VMs, container density or large file caching. Systems running slower 2133MHz or 2400MHz sticks will also gain bandwidth from the faster PC4-21300 rating.

Sustained operation

The 2Rx8 organisation and standard 1.2V voltage keep thermals predictable inside the NAS chassis during long backup or transcoding sessions. No heat spreader is fitted, relying on the system's own airflow across the bare PCB. JEDEC compliance ensures the module maintains its rated timings without voltage drift over extended uptime.

Highlights

  • 16GB single module expands NAS capacity for heavier workloads
  • DDR4 2666 CL19 timing matches QNAP TVS-672X/XT/675/872X/XT specs
  • 2V low-power operation reduces heat in compact enclosures
  • 2Rx8 dual-rank layout maximises density on 260-pin SODIMM
  • JEDEC and RoHS compliant for warranty-safe DIY upgrade

Specifications

BrandOWC
Part Number2S6D42R816GB
Capacity16GB
Type260-Pin DDR4 Non-ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemQNAP TVS-672X
QNAP TVS-672XT
QNAP TVS-675
QNAP TVS-872X
QNAP TVS-872XT

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Questions about this item

Does the 260-pin SODIMM fit the TVS-872XT memory slot?

Yes, the module uses the standard 260-pin DDR4 SODIMM form factor required by the TVS-872XT and the other listed QNAP models.

What is the correct orientation when inserting the module into the NAS?

Align the notch on the module edge connector with the key in the slot, press firmly until the side clips click, and verify the module sits level.

Will the 2Rx8 rank configuration require a firmware update later?

No firmware update is needed; the JEDEC-standard 2Rx8 layout works with the existing BIOS on all compatible TVS-672X, TVS-675 and TVS-872X series units.

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