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Two green 288-pin DDR4 RDIMM modules in static bags

OWC

OWC 64GB (2x32GB) DDR4 2666 CL19 ECC Registered RDIMM memory upgrade

SKU CH-F7QD-94G3Y

64GB dual-channel DDR4-2666 ECC registered RDIMM kit for Synology ActiveProtect DP7200 and DP7400

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latency19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (2 x 32GB)

  • ECC registered design prevents data corruption in servers
  • 64GB kit with two 32GB modules expands memory capacity
  • DDR4 2666 speed with CL19 latency delivers responsive performance
  • 2V low voltage reduces power draw in compatible systems
  • Validated for Synology ActiveProtect DP7200 and DP7400 appliances

Capacity and Form Factor

This OWC kit provides 64GB of DDR4 memory in two 32GB registered DIMMs. Each module uses a 288-pin layout and runs at 1.2V with a CL19 latency rating. The 2Rx4 organisation and ECC registered design target server and workstation platforms.

Suited Systems and Limitations

The modules are validated for Synology ActiveProtect DP7200 and DP7400 appliances. They also operate in systems rated for 2133MHz or 2400MHz DDR4. Standard desktop computers cannot use registered ECC memory, and mixing these sticks with unbuffered or load-reduced DIMMs is not supported.

Decisive Specification

The registered ECC attribute is the single factor that decides compatibility. Only platforms designed for registered DDR4 ECC RDIMMs will accept this kit; consumer motherboards and unbuffered server boards will not.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $431.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 19
Lower than about 70% of the 483 comparable items (median 22).
Price per GB $6.75 per GB
Cheaper than about 59% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R6D42R4064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latency19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSynology ActiveProtect DP7200
Synology ActiveProtect DP7400

Other versions of this model

3 more in the same range

Questions about this item

Does the 288-pin DDR4 RDIMM fit the memory slots on the Synology ActiveProtect DP7200 and DP7400?

Yes, the 288-pin DDR4 2666 registered DIMM is built to the JEDEC standard for those models and installs directly into their RDIMM slots.

What is the correct way to seat both 32 GB modules so the system recognises the full 64 GB?

Power off the unit, open the chassis, align each module's notch with the slot key, press firmly until both side clips click, then power on and verify 64 GB in the Synology DSM memory report.

When should the ECC registered modules be replaced to keep the NAS running reliably?

Replace them if DSM reports correctable ECC errors that climb over time, if the system fails memory self-test at boot, or after a confirmed DIMM fault in the hardware log.

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