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Two green DDR4 ECC SODIMM sticks, 260-pin, no heat spreader

OWC

OWC 16GB (2×8GB) DDR4 2666MHz CL19 ECC SODIMM for DS1823XS+

SKU CH-PJ2G-YSEVR

16 GB dual-channel DDR4 ECC SODIMM kit running at 2666 MHz CL19 for Synology DS1823XS+ NAS

  • Capacity16GB (2 x 8GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB (2 x 8GB)

  • 16GB dual-channel kit expands NAS memory for heavier workloads
  • DDR4 2666MHz CL19 ECC protects data integrity in Synology DS1823XS+
  • JEDEC-standard 1.2V unbuffered modules install without tools or configuration
  • 2×8GB 260-pin SODIMMs fit the factory slots exactly
  • Backward compatible with 2400MHz and 2133MHz systems for flexible deployment

Tailored for Synology DS1823XS+

This 16 GB kit contains two 8 GB DDR4 ECC SODIMM modules built specifically for the Synology DiskStation DS1823XS+. The unbuffered 260-pin design matches the NAS memory slots, and ECC support protects data integrity in always-on storage workloads. It is a direct, warranty-safe upgrade for that platform.

Capacity and headroom

The 16 GB total (2×8 GB) adds usable memory for running multiple Docker containers, virtual machines or heavy file-indexing tasks on the DS1823XS+. Speed is locked to DDR4-2666 CL19 per the system specification, so the kit cannot run faster than the NAS allows. Workloads that exceed 16 GB will still hit the platform ceiling.

Thermals, noise and power

Modules operate at 1.2 V without heat spreaders, drawing minimal power inside the sealed NAS chassis. Passive cooling from the system airflow keeps temperatures in check, and there are no moving parts to add noise. The low-voltage DDR4 design helps the appliance stay within its original thermal envelope.

Highlights

  • 16GB dual-channel kit expands NAS memory for heavier workloads
  • DDR4 2666MHz CL19 ECC protects data integrity in Synology DS1823XS+
  • JEDEC-standard 1.2V unbuffered modules install without tools or configuration
  • 2×8GB 260-pin SODIMMs fit the factory slots exactly
  • Backward compatible with 2400MHz and 2133MHz systems for flexible deployment

Specifications

BrandOWC
Part Number2C6D41R8016P
Capacity16GB (2 x 8GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStationDS1823XS+

Other versions of this model

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Questions about this item

Will these 2666MHz CL19 ECC modules down-clock to run alongside my existing 2400MHz DDR4 SODIMMs in the DS1823XS+?

Yes, the kit is backwards compatible with 2400MHz and 2133MHz systems, so the new 2666MHz sticks will automatically run at the lower speed of your existing memory.

How can I confirm the 16GB ECC upgrade is recognised and error-correcting after installing both 8GB sticks?

Open Synology DSM, go to Control Panel → Info Center, and verify the total memory shows 16GB with ECC status reported as active.

Does the package include only the two 8GB SODIMMs, or are tools and thermal pads also supplied?

The box contains the two 8GB DDR4 2666MHz CL19 ECC SODIMM modules; no installation tools or heat spreaders are included.

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