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Green 260-pin DDR4 ECC SODIMM module, no heat spreader

OWC

OWC 8GB DDR4 2666 CL19 ECC SODIMM Synology DS1621+ DS1621xs+ memory upgrade

SKU CH-FQ1X-YS56B

An 8 GB DDR4 ECC SODIMM running at 2666 MHz CL19 for Synology DS1621+ and DS1621xs+ NAS units

  • Capacity8GB
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 8GB

  • 8GB DDR4 2666 CL19 ECC SODIMM boosts Synology DS1621+ and DS1621xs+ multitasking
  • JEDEC-standard 1.2V unbuffered module ensures warranty-safe upgrade for NAS reliability
  • Single 8GB 1Rx8 260-pin stick installs easily in compatible DiskStation bays
  • Backward compatible with 2400 and 2133MHz systems for flexible deployment
  • ECC error correction protects data integrity in always-on micro-server environments

8GB DDR4 ECC SODIMM for Synology NAS

This 8GB DDR4 2666 CL19 ECC SODIMM is built specifically for the Synology DS1621+ and DS1621xs+ DiskStation models. It adds error-correcting memory capacity to NAS appliances that require 260-pin unbuffered modules running at 1.2V. The single-rank 1Rx8 design matches the original system specification.

Fits DS1621+ and DS1621xs+ slots directly

The module installs into the existing SODIMM slots without adapters or cable routing. Backward compatibility with 2400MHz and 2133MHz buses lets it work if the system negotiates a lower speed. JEDEC-standard timings mean the NAS firmware recognises the upgrade automatically, freeing the installer from manual configuration.

Sustains ECC integrity under continuous operation

ECC circuitry corrects single-bit errors in real time during long file transfers, backup jobs or virtual-machine workloads. The 1.2V operating voltage keeps thermal output low inside the compact NAS chassis. CL19 latency remains stable across extended duty cycles, preventing the timing drift that can appear on non-validated modules.

Istaknuto

  • 8GB DDR4 2666 CL19 ECC SODIMM boosts Synology DS1621+ and DS1621xs+ multitasking
  • JEDEC-standard 1.2V unbuffered module ensures warranty-safe upgrade for NAS reliability
  • Single 8GB 1Rx8 260-pin stick installs easily in compatible DiskStation bays
  • Backward compatible with 2400 and 2133MHz systems for flexible deployment
  • ECC error correction protects data integrity in always-on micro-server environments

Specifikacije

BrandOWC
Part Number2C6D41R808GB
Capacity8GB
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStationDS1621+
Synology DiskStationDS1621xs+

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What is the CAS latency of this DDR4 2666 module and does it affect sustained throughput?

The module runs at CL19, which is the standard latency for JEDEC DDR4 2666. Under sustained workloads the latency itself does not change; the practical limit becomes the memory controller and total capacity installed in the NAS.

Does the module generate noticeable heat or noise during continuous NAS operation?

It has no heat spreader and operates at the standard 1.2 V. DDR4 SODIMMs of this type run cool and silent; any warmth or fan noise comes from the NAS chassis, not the memory stick itself.

Which Synology models must I already own for this upgrade to work?

The module is validated for the Synology DiskStation DS1621+ and DS1621xs+. Your NAS must be one of those two models and have a free 260-pin SODIMM slot to accept the 8 GB stick.

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