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Two green DDR4 ECC UDIMM sticks, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2666 ECC UDIMM memory upgrade for Synology RS2818RP+

SKU CH-FH67-JC1E1

A 32 GB kit of two 16 GB DDR4 2666 ECC UDIMM modules validated for Synology RS2818RP+

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

  • Boosts NAS responsiveness with 32 GB (2 × 16 GB) DDR4 2666 ECC UDIMM kit
  • Protects data integrity using ECC error-correction on every module
  • Runs cool and efficient at 1.2 V standard voltage
  • Ready for Synology RS2818RP+ with 288-pin unbuffered DIMM form factor
  • Backward compatible with 2133 MHz and 2400 MHz systems

Synology RS2818RP+ 32GB ECC kit

This OWC kit adds 32GB of DDR4 2666 ECC UDIMM memory to the Synology RackStation RS2818RP+. Two 16GB modules bring the NAS to a higher capacity for virtualization, heavy file sharing or surveillance workloads. The unbuffered ECC design matches the system's native memory architecture. Builders needing registered DIMMs or a different form factor cannot use this kit.

Sustained throughput with ECC integrity

At DDR4 2666 CL19 the modules deliver steady bandwidth during long backup windows or multi-user database access. ECC corrects single-bit errors on the fly, preventing silent data corruption that can accumulate under continuous load. The 1.2V operating voltage keeps power draw modest inside a rack chassis. Systems requiring faster speeds or lower latency than PC4-21300 will not benefit from this grade.

Tool-free DIMM installation

The 288-pin UDIMMs slot directly into the RS2818RP+ memory sockets without adapters or cables. OWC validates each stick at 2666, 2400 and 2133MHz, so the kit posts at the highest speed the platform supports. Installers must populate the correct channel pair; mixing with existing non-ECC or different-rank modules will prevent boot. No heat spreader is fitted, so airflow over the PCB is essential.

Points forts

  • Boosts NAS responsiveness with 32 GB (2 × 16 GB) DDR4 2666 ECC UDIMM kit
  • Protects data integrity using ECC error-correction on every module
  • Runs cool and efficient at 1.2 V standard voltage
  • Ready for Synology RS2818RP+ with 288-pin unbuffered DIMM form factor
  • Backward compatible with 2133 MHz and 2400 MHz systems

Caractéristiques

BrandOWC
Part Number2E6D42R8032P
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS2818RP+

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Questions sur cet article

How much power does the 1.2V DDR4 kit draw when the RS2818RP+ runs continuously?

Each module operates at 1.2V, the standard DDR4 voltage, so total power scales with the 32GB capacity and the NAS workload rather than exceeding JEDEC limits.

Does the Synology RS2818RP+ need any specific firmware or BIOS setting to recognise the 2Rx8 ECC UDIMMs?

The kit is validated for the RS2818RP+ and follows JEDEC PC4-21300 CL19 timings, so the NAS detects the 2 x 16GB modules at 2666MHz without extra configuration.

Will the 2666MHz CL19 sticks downclock reliably if the chassis still has 2133MHz or 2400MHz modules installed?

Yes — the modules are backward compatible with 2133MHz and 2400MHz speeds, allowing mixed-speed operation at the lowest common frequency.

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