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Two green circuit boards with gold edge connectors and black memory chips

OWC

OWC 16GB (2x8GB) DDR4 2666MHz ECC SODIMM memory upgrade for Synology RS1221+ / RS1221RP+

SKU CH-MPEC-X1QYN

16 GB DDR4 2666 MHz ECC SODIMM kit validated for Synology RS1221+ and RS1221RP+ NAS systems

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

Capacity 16GB (2 x 8GB)

  • 16 GB kit doubles NAS capacity for heavier workloads
  • ECC protection detects and corrects single-bit errors automatically
  • 2666 MHz DDR4 speed matches Synology RS1221+ specifications
  • 2 V low-voltage modules reduce power draw and heat
  • JEDEC and RoHS compliant for warranty-safe installation

Targeted NAS Upgrade

This 16GB kit contains two 8GB DDR4 ECC SODIMM modules built for the Synology RS1221+ and RS1221RP+ rackmount NAS. It adds error-correcting memory to systems that run continuous file, backup or virtualization workloads.

Sustained Workload Behaviour

JEDEC-standard 2666MHz CL19 timing and 1.2V operation keep latency predictable during long backup windows or container migrations. ECC detects and corrects single-bit errors without halting services.

Thermal And Power Profile

Low-voltage unbuffered modules without heat spreaders draw minimal power inside the chassis. Passive cooling in the rackmount enclosure keeps temperatures stable and fan noise unchanged.

Points forts

  • 16 GB kit doubles NAS capacity for heavier workloads
  • ECC protection detects and corrects single-bit errors automatically
  • 2666 MHz DDR4 speed matches Synology RS1221+ specifications
  • 2 V low-voltage modules reduce power draw and heat
  • JEDEC and RoHS compliant for warranty-safe installation

Caractéristiques

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 RackstationRS1221+
Synology RackstationRS1221RP+

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Questions sur cet article

How much power does the 1.2 V DDR4 2666 MHz kit draw when the Synology RS1221+ runs continuously?

Each module operates at 1.2 V, the standard DDR4 voltage, so total power stays low during 24/7 NAS operation and no extra cooling is required.

What must the Synology RS1221RP+ already have inside for these two 8 GB sticks to work?

The rackstation needs two free 260-pin SODIMM slots and a CPU that supports DDR4 ECC unbuffered memory; the kit then installs without tools.

Will the 2666 MHz CL19 modules down-clock reliably if my RS1221+ currently runs 2400 MHz memory?

Yes, the sticks are backward compatible with 2400 MHz and 2133 MHz, so they will run at the lower speed without errors.

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