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Green printed circuit board with gold edge contacts and black memory chips

OWC

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

SKU CH-PN5K-V6SCJ

32 GB DDR4 ECC registered RDIMM running at 2666 MHz CL19 for servers and workstations

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 32 GB capacity expands server memory headroom
  • DDR4 2666 MHz CL19 delivers responsive throughput
  • ECC registered design protects data integrity
  • 2 V operation reduces power draw
  • 288-pin RDIMM fits compatible server and workstation boards

32GB DDR4 2666MHz ECC RDIMM

This 32GB OWC module runs at DDR4 2666 (PC4-21300) with CL19 latency and 1.2V operation. It uses a 288-pin registered DIMM format with 2Rx4 organisation and on-die ECC. The part is a direct replacement for Supermicro MEM-DR432L-CL05-ER26, MEM-DR432L-HL01-ER26 and MEM-DR432L-HL03-ER26.

Server and workstation upgrades only

Designed for servers, workstations and NAS systems that require registered ECC memory. It will not work in standard desktop computers and cannot be mixed with unbuffered modules. Buyers who need non-ECC memory for consumer platforms should look elsewhere.

Registered ECC with 2Rx4 layout

The registered buffer and 2Rx4 rank configuration are mandatory for compatibility with the target platform. Systems that require unbuffered DIMMs or a different rank organisation will not accept this module.

How it compares

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

Price $191.99
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 $6.00 per GB
Cheaper than about 64% 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 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

What motherboard slot is required for this 288-Pin DDR4 ECC RDIMM?

A server or workstation motherboard with a 288-Pin DDR4 RDIMM slot that supports registered ECC memory.

How does this 2666MHz module behave when installed alongside 2133MHz or 2400MHz DDR4 RDIMMs?

It will downclock to match the slowest installed module speed while maintaining CL19 latency at the lower frequency.

How can I verify the 2Rx4 rank and ECC registered function are active after installation?

Check the system BIOS or OS memory report for 2Rx4 organisation, registered status and ECC enabled at 2666MHz.

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