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Four green DDR4 ECC UDIMM sticks in static bags

OWC

OWC 64GB (4x16GB) DDR4 2666 ECC UDIMM RS3618xs memory upgrade

SKU CH-KKSD-E02Q5

A 64 GB kit of four 16 GB DDR4 2666 ECC UDIMM modules validated for the Synology RS3618xs

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 64GB (4 x 16GB)

  • 64 GB total capacity from four 16 GB modules
  • ECC protection guards data integrity in Synology RS3618xs
  • JEDEC-standard DDR4 2666 MHz CL19 at 1.2 V
  • Unbuffered 288-pin UDIMM fits the RS3618xs memory slots
  • Backward compatible with 2133 MHz and 2400 MHz systems

Synology RS3618xs 64GB DDR4 ECC kit

This OWC upgrade delivers 64GB of DDR4 2666 ECC UDIMM memory across four 16GB modules. It is built for the Synology RackStation RS3618xs and meets JEDEC and RoHS standards. The kit installs without tools and carries a limited lifetime warranty with free technical support.

NAS administrators needing ECC reliability

The unbuffered ECC design suits the RS3618xs workloads that demand data integrity and 1.2V operation. Builders targeting consumer platforms without ECC support or systems requiring registered DIMMs should select a different module type.

2666MHz CL19 DDR4 2666 speed rating

Each 288-pin DIMM runs at PC4-21300 with CL19 latency and 2Rx8 organisation. The modules are backward compatible with 2133MHz and 2400MHz buses, so the kit will clock down automatically if the host requires a lower frequency.

Points forts

  • 64 GB total capacity from four 16 GB modules
  • ECC protection guards data integrity in Synology RS3618xs
  • JEDEC-standard DDR4 2666 MHz CL19 at 1.2 V
  • Unbuffered 288-pin UDIMM fits the RS3618xs memory slots
  • Backward compatible with 2133 MHz and 2400 MHz systems

Caractéristiques

BrandOWC
Part Number2E6D42R8064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS3618xs

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Questions sur cet article

Should I pick the 64 GB kit or a smaller capacity for my RS3618xs?

The kit supplies 64 GB total across four 16 GB modules and matches the Synology RackStation RS3618xs qualified configuration.

What does the 2666 MHz rating actually deliver inside the NAS?

The modules run at DDR4 2666 with CL19 latency and 1.2 V, giving the rated PC4-21300 bandwidth when installed in the RS3618xs.

Does the DDR4 2666 ECC UDIMM interface limit speed or capacity in this system?

The 288-pin unbuffered ECC DIMMs operate at 2666 MHz and will also run at 2400 MHz or 2133 MHz if the platform requires it.

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