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Four green DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 32GB (4x8GB) DDR4 2666 CL19 ECC Registered RDIMM server RAM

SKU CH-T277-W311E

32GB quad-channel kit of 2666MHz DDR4 ECC registered RDIMMs for servers and workstations

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (4 x 8GB)

Show 7 more

Rank 1Rx4

  • ECC registered design prevents data corruption in critical workloads
  • 32GB quad-channel kit expands server memory capacity efficiently
  • DDR4 2666 CL19 timing balances speed and stability for enterprise use
  • 2V operation reduces power draw and heat in dense configurations
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

OWC 32GB DDR4 2666 ECC Registered Kit

This OWC kit provides 32GB of DDR4 server memory across four 8GB registered DIMMs. It operates at 2666MHz with CL19 latency and 1.2V voltage. The modules feature ECC error correction and a 1Rx4 rank configuration for stable operation in compatible systems.

For Servers and Workstations Requiring Registered

This memory suits servers, workstations, and NAS systems that require registered ECC DDR4 DIMMs. It is not compatible with standard desktop computers or motherboards that only accept unbuffered non-ECC modules. Builders needing unbuffered memory or consumer-platform compatibility should look elsewhere.

32GB Capacity with 2666MHz Speed Headroom

The 32GB total capacity handles virtualization, database workloads, and multi-user file services comfortably. Speed scales down to 2400MHz and 2133MHz platforms automatically. Systems requiring higher frequencies, lower latencies, or larger per-module densities will exceed what this kit provides.

How it compares

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

Price $293.99
Pricier than about 60% of the 6,523 comparable items (median $188.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $9.19 per GB
Pricier than about 64% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number2R6D41R4032S
Total capacity32 GB (4 × 8 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
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

Does my system need DDR4 288-pin ECC registered DIMM slots to use these modules?

Yes, these modules require a server, workstation or NAS motherboard with DDR4 288-pin ECC registered DIMM slots; they will not fit or function in standard desktop unbuffered slots.

Will the kit run at 2133 MHz or 2400 MHz if my platform only supports those speeds?

The kit is backward compatible with 2133 MHz and 2400 MHz platforms and will automatically operate at the highest speed the system allows.

How can I confirm the kit is running as ECC registered memory after installation?

Check the BIOS or OS memory report for 32 GB total capacity, 2666 MT/s (or the platform's supported speed), CL19 timings, 1.2 V voltage and ECC registered status.

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