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Two green 260-pin DDR4 ECC SODIMM modules, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2666 CL19 ECC SODIMM for Synology DS3617xs/II

SKU CH-TRXY-BG2GB

32 GB dual-channel DDR4 ECC SODIMM kit at 2666 MHz CL19 for Synology DS3617xs and DS3617xsII NAS units

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8

Capacity 32GB (2 x 16GB)

  • 32 GB capacity for larger workloads
  • Dual 16 GB modules enable dual-channel bandwidth
  • DDR4 2666 CL19 matches system timing
  • ECC protection guards data integrity in NAS
  • JEDEC and RoHS compliant for warranty-safe upgrade

System-specific kit for Synology NAS

This 32GB kit contains two 16GB DDR4 2666 CL19 ECC SODIMM modules built for the Synology DiskStation DS3617xs and DS3617xsII. It targets administrators who need to expand memory in those exact appliances.

ECC unbuffered 260-pin DDR4 at 2666 MT/s

The modules run at PC4-21300 speed with CL19 latency and 1.2V operation. ECC protection is the single specification that matches the NAS requirement; non-ECC memory will not work in these systems.

32GB total capacity with backward compatibility

The dual-rank 2Rx8 layout provides headroom for virtual machines, large file caches and concurrent users. Modules down-clock to 2400MHz or 2133MHz if the platform requires it. Buyers needing more than 32GB or a different form factor cannot use this kit.

How it compares

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

Price $251.99
Cheaper than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $7.87 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

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Specifications

Product
Brand nameOWC
Part number2C6D42R8032P
Total capacity32 GB (2 × 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 DiskStationDS3617xs
Synology DiskStationDS3617xsII

Other versions of this model

5 more in the same range

Questions about this item

What does the 2666 MHz rating actually deliver inside a Synology DS3617xs or DS3617xsII?

The modules run at DDR4 2666 (PC4-21300) with CL19 latency, giving the NAS its rated memory bandwidth for file serving and virtualization workloads.

How does the DDR4 SODIMM interface limit speed in these DiskStation models?

The 260-pin DDR4 SODIMM slot caps at 2666 MHz; the kit will also run at 2400 MHz or 2133 MHz if the system requires a lower speed.

What physical space and slot layout does the 32 GB kit need to fit?

Two 260-pin DDR4 ECC SODIMM slots are required; each 16 GB module is unbuffered, 2Rx8, 1.2 V and has no heat spreader.

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