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Green bare circuit board DDR5 RDIMM with black memory chips and gold edge contacts

OWC

OWC 64GB DDR5 5200 CL42 2Rx4 1.1V ECC Registered RDIMM server RAM

SKU CH-25TR-7J83A

A 64 GB DDR5 ECC registered RDIMM running at 5200 MT/s with CL42 latency and 1.1 V operation for compatible workstations and servers

  • Total capacity64 GB
  • Rated speedDDR5 5200 (PC5 41600)
  • CAS latencyCL42
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

Show 4 more

Rank 2Rx4

  • ECC registered design protects data integrity in critical workloads
  • 64GB capacity in a single module maximises slot efficiency
  • DDR5 5200 speed with CL42 latency supports high-throughput server tasks
  • 1V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible workstation and server boards

64 GB DDR5 5200 ECC RDIMM

This module provides 64 GB of DDR5 memory rated at 5200 MT/s with CL42 latency and 1.1 V operation. It uses a 288-pin registered DIMM form factor with ECC and a 2Rx4 organisation. The part is designed for server and workstation platforms that require registered ECC memory.

Suited for ECC registered servers and workstations

This memory fits systems that specifically support DDR5 registered ECC RDIMMs. It will not work in standard desktop computers or in platforms that only accept unbuffered or load-reduced ECC modules. Builders needing unbuffered DDR5 or non-ECC memory should choose a different product.

Single module for registered DDR5 slots

The stick installs directly into a 288-pin DDR5 RDIMM slot without a heat spreader. It complies with JEDEC and RoHS standards for warranty-safe upgrades. The registered buffer reduces electrical load on the memory controller, allowing larger total capacities in compatible multi-slot configurations.

How it compares

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

Price $1,907.99
Pricier than about 86% 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 $29.81 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R2D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5200 (PC5 41600)
Memory
CAS latencyCL42
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

What motherboard slot and DDR generation must my system have to accept this 288-pin DDR5 registered ECC module?

The system must provide a 288-pin DDR5 RDIMM slot that supports ECC registered memory at 1.1 V; standard desktop boards with unbuffered slots will not work.

Can this CL42 registered ECC module run alongside other registered ECC DIMMs of different speeds or ranks in the same server?

Mixing is possible only if every installed DIMM is ECC registered; the memory controller will run all modules at the lowest common speed and supported rank configuration.

How can I confirm the module is operating at the rated 5200 MT/s and CL42 after installation?

Check the system BIOS or a hardware utility such as CPU-Z; it should report DDR5-5200 (PC5-41600) with CAS latency 42 for the installed DIMM.

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