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Two green DDR4 RDIMM sticks with gold contacts and black chips, no heat spreader

OWC

OWC 32GB (2x16GB) DDR4 2666 ECC Registered RDIMM for Synology SA3400 SA410 SA3600 SA3610 server RAM

SKU CH-7HWS-DXWAD

A 32 GB dual-channel kit of DDR4 2666 ECC registered RDIMMs for Synology SA3400, SA410, SA3600 and SA3610 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

Rank 2Rx4

  • ECC registered design protects data integrity in server workloads
  • 32 GB dual-channel kit (2 × 16 GB) expands NAS memory capacity
  • DDR4 2666 MHz CL19 at 1.2 V matches Synology SA3400, SA410, SA3600, SA3610 specs
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

32GB DDR4 ECC Registered kit for Synology servers

This 32GB kit contains two 16GB DDR4 2666 PC4-21300 CL19 modules. It is built for Synology SA3400, SA410, SA3600 and SA3610 NAS systems that require ECC registered RDIMMs. Standard desktop computers cannot use this memory type.

Registered DDR4 limited to 2666

The modules run at 2666 MHz and also operate at 2133 or 2400 MHz when the platform demands a lower speed. Registered buffering and ECC are mandatory on these systems; unbuffered or load-reduced DIMMs will not work alongside them.

Dual-channel kit installs in matched pairs

The two 288-pin DIMMs are sold as a matched set for dual-channel operation. Installation follows normal server DIMM procedure. Mixing with non-registered or non-ECC memory will prevent the system from booting.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $206.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $6.47 per GB
Cheaper than about 59% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2R6D42R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 32 GB kit or a single 16 GB module for my Synology SA3400?

The 32 GB kit contains two matched 16 GB modules that run in dual-channel mode, giving the SA3400 full bandwidth; a single module would operate in single-channel and halve throughput.

What does the 2666 MHz rating deliver inside a Synology SA3610?

The modules run at 2666 MHz CL19, providing PC4-21300 bandwidth for the SA3610’s memory controller; the system will clock them down to 2133 MHz or 2400 MHz if the platform requires a lower speed.

How does the DDR4 288-pin ECC registered interface limit what I can install?

The 288-pin DDR4 ECC registered DIMMs are keyed for server and NAS platforms only; they will not fit or function in standard desktop boards that accept unbuffered non-ECC memory.

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