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Two green DDR4 RDIMM sticks with gold contacts and black chips

OWC

OWC 64GB (2x32GB) DDR4 2666 ECC Registered RDIMM

SKU CH-SA3R-STKJ7

64 GB dual-channel DDR4-2666 ECC registered RDIMM kit with CL19 timing and 1.2 V operation for servers and compatible NAS systems

  • Capacity64GB (2 x 32GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 64GB (2 x 32GB)

Rank 2Rx4

  • 64GB dual-channel kit expands server memory capacity
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2666 CL19 1.2V delivers efficient high-speed performance
  • 288-pin RDIMM fits compatible Synology NAS and workstation platforms
  • JEDEC and RoHS compliant for warranty-safe upgrades

64 GB ECC Registered Kit

This 64 GB kit contains two 32 GB DDR4 2666 ECC Registered RDIMM modules designed for servers, workstations and compatible NAS systems. It operates at 1.2 V with CL19 latency and uses a 288-pin form factor. The dual-channel kit is built to JEDEC and RoHS standards for warranty-safe upgrades.

Replaces slower DDR4 modules

The kit replaces existing DDR4 2133 or 2400 memory and runs at the higher 2666 speed when the platform supports it. The jump is worth it when the system can utilise the faster data rate for heavier workloads. It will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced ECC memory.

DDR4 2666 interface limits

The DDR4 2666 interface caps transfer rates at PC4-21300 bandwidth. Backward compatibility allows operation at 2133 and 2400 speeds if the platform requires it. Registered buffering adds a clock cycle of latency but enables the larger capacities needed in multi-socket servers. The 2Rx4 organisation supports dense configurations within the platform's maximum memory limit.

Points forts

  • 64GB dual-channel kit expands server memory capacity
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2666 CL19 1.2V delivers efficient high-speed performance
  • 288-pin RDIMM fits compatible Synology NAS and workstation platforms
  • JEDEC and RoHS compliant for warranty-safe upgrades

Caractéristiques

BrandOWC
Part Number2R6D42R4064P
Capacity64GB (2 x 32GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions sur cet article

Does the 288-pin DDR4 RDIMM fit a Synology FS2017 FlashStation?

Yes, the kit is a direct replacement for Synology D4RD-2666-32G and D4ER01-32G modules used in the FS2017.

What is the correct way to seat both 32 GB modules in a dual-channel server?

Install the pair in the two slots designated for channel A and channel B, pressing each module straight down until the retention clips click on both ends.

Will the ECC registered DIMMs need any firmware updates or periodic replacement?

No firmware is required; the modules are JEDEC-standard 1.2 V parts rated for continuous server operation with a limited lifetime warranty.

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