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Two green DDR4 SODIMM modules with gold contacts and black chips

OWC

OWC 64GB (2x32GB) DDR4 2666 ECC SODIMM Kit RS1221+ RS1221RP+

SKU CH-MNE3-DWHXW

64 GB DDR4 2666 ECC SODIMM kit (2 × 32 GB) validated for Synology RS1221+ and RS1221RP+ NAS systems

  • Capacity64GB (2 x 32GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 64 GB kit doubles NAS capacity for heavy workloads
  • ECC protection guards data integrity in Synology RS1221+ and RS1221RP+
  • DDR4 2666 speed matches system spec for stable operation
  • 2 V modules run cooler and draw less power
  • 260-pin SODIMM form factor fits the NAS memory slots directly

Capacity and fit

This kit provides 64GB of DDR4 ECC memory in two 32GB SODIMM modules rated at 2666MHz with CL19 latency. It is built for Synology DiskStation RS1221+ and RS1221RP+ units that accept 260-pin unbuffered ECC SO-DIMMs running at 1.2V.

Who this suits and who it does not

The modules suit administrators who need to expand the RS1221+ or RS1221RP+ to the full 64GB capacity using validated ECC parts. Buyers who need a different capacity, non-ECC memory, DIMM form factor, or compatibility with other platforms should look elsewhere.

Behaviour under sustained load

The memory operates at the JEDEC-standard 2666MHz speed and 1.2V voltage continuously, with ECC correcting single-bit errors during long file transfers, backup jobs or virtual-machine workloads. Backward compatibility lets the kit run at 2400MHz or 2133MHz if the system requires a lower speed.

Points forts

  • 64 GB kit doubles NAS capacity for heavy workloads
  • ECC protection guards data integrity in Synology RS1221+ and RS1221RP+
  • DDR4 2666 speed matches system spec for stable operation
  • 2 V modules run cooler and draw less power
  • 260-pin SODIMM form factor fits the NAS memory slots directly

Caractéristiques

BrandOWC
Part Number2C6D42R8064P
Capacity64GB (2 x 32GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology DiskStation RS1221+
Synology DiskStation RS1221RP+

Questions sur cet article

Does this kit need a Synology DiskStation RS1221+ or RS1221RP+ to operate?

Yes, the 64GB DDR4 2666 ECC SODIMM kit is validated for Synology DiskStation RS1221+ and RS1221RP+ systems.

Will the 2666MHz modules run with existing 2400MHz or 2133MHz memory in the same NAS?

The modules are backwards compatible with 2400MHz and 2133MHz speeds, so they will clock down to match slower installed memory.

How can I confirm the 64GB ECC kit is recognised and running at CL19 after installation?

Check the Synology DSM Resource Monitor or the system memory report; it should show 64GB total capacity with ECC active at CL19 latency.

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