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Green 288-pin DDR4 ECC registered DIMM module, bare circuit board with black chips, no heat spreader

OWC

OWC 32GB DDR4 2666MHz ECC Registered RDIMM CL19 1.2V 2Rx4 server RAM

SKU CH-3VVX-7NYX2

32GB DDR4 2666MHz ECC Registered RDIMM for servers and workstations with CL19 latency and 1.2V operation

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 32GB capacity extends server memory headroom for virtualization workloads
  • ECC registered design detects and corrects single-bit errors to protect data integrity
  • 2666MHz DDR4 speed with CL19 latency delivers responsive throughput for database tasks
  • 2V operation reduces power draw and heat in dense rack environments
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Server-grade ECC RDIMM

This 32GB DDR4 2666MHz module is built for servers, workstations and NAS systems that require registered ECC memory. It replaces Dell part numbers SNPTN78YC/32G, SNPTN78YC/32VXR and TN78Y with identical specifications. The module will not work in standard desktop computers and cannot be mixed with unbuffered memory.

JEDEC DDR4 2666 limits

The module operates at 2666MHz CL19 under the PC4-21300 standard and is backward compatible with 2133MHz and 2400MHz systems. ECC registered operation adds a clock cycle for address and command buffering, which improves signal integrity at the cost of slightly higher latency. It runs at the standard 1.2V DDR4 voltage and conforms to JEDEC specifications.

288-pin 2Rx4 registered build

A 288-pin RDIMM form factor with 2Rx4 organisation fits server DIMM slots that expect registered modules. The lack of a heat spreader keeps the profile low for dense chassis and allows direct airflow over the DRAM. Each module is tested in-house and backed by OWC's advanced replacement program and limited lifetime warranty with free technical support.

How it compares

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

Price $224.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $7.03 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

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Specifications

Product
Brand nameOWC
Part number2R6D42R432 GB
Total capacity32 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Which capacity should I pick for my server upgrade?

This module provides 32GB of DDR4 ECC Registered memory in a single 288-pin RDIMM.

What does the 2666MHz rating deliver in a live system?

The module runs at DDR4 2666 (PC4-21300) with CL19 latency at 1.2V, and will down-clock to 2400MHz or 2133MHz if the platform requires it.

Will the 288-pin RDIMM interface work with my motherboard?

It fits standard DDR4 288-pin RDIMM slots for servers, workstations and NAS systems; it cannot be used in unbuffered desktop slots.

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