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Green rectangular DDR4 server memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 64GB DDR4 3200MHz PC4-25600 ECC Registered RDIMM 288-Pin 2Rx4 1.2V Server RAM

SKU CH-BZJA-9AK6G

64 GB DDR4 3200 MHz ECC registered RDIMM with CL22 latency and 1.2 V operation for server upgrades

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 64 GB capacity lets servers handle large workloads
  • DDR4 3200 MHz speed delivers high data throughput
  • ECC registered design protects data integrity in critical systems
  • 2 V operation reduces power draw and heat
  • JEDEC compliant module ensures broad server compatibility

64GB DDR4 ECC Registered RDIMM

This 64GB DDR4 module runs at 3200MHz with CL22 latency and 1.2V operation. It is a 288-pin ECC Registered RDIMM organised as 2Rx4, built to JEDEC specifications. The module carries no heat spreader. It is designed for servers and workstations that require registered error-correcting memory.

Suited for registered ECC platforms only

This memory fits systems that accept DDR4 ECC Registered RDIMMs and will not work in standard desktop computers. It cannot be mixed with unbuffered modules. Buyers who need non-ECC or unbuffered memory for consumer motherboards should look elsewhere.

64GB single-module capacity

A single module provides 64GB of registered ECC capacity for multi-socket servers or high-density workstations. It handles large virtualisation workloads, database buffers and memory-intensive compute tasks. Systems limited to lower per-slot densities or unbuffered memory cannot use this module.

How it compares

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

Price $384.99
Pricier than about 65% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $6.02 per GB
Cheaper than about 63% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R464 GB
Total capacity64 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does my motherboard need to support registered ECC DDR4 memory for this 288‑pin 64GB module to work?

Yes, this is a registered ECC RDIMM that requires a server or workstation platform with DDR4 registered memory support; it will not function in standard desktop boards that only accept unbuffered DIMMs.

Can I mix this 2Rx4 CL22 registered DIMM with the unbuffered DDR4 sticks already in my system?

No, registered and unbuffered DDR4 cannot be mixed; all installed modules must be registered ECC RDIMMs of the same specification for the system to operate correctly.

How can I verify the module is running at DDR4 3200 with ECC active after installation?

Check the BIOS or UEFI memory information screen — it should report 3200 MT/s, CL22 timings, 1.2 V and ECC enabled for each installed 64GB DIMM.

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