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Green rectangular DDR5 RDIMM module with black chips and gold edge connector

OWC

OWC 64GB DDR5 5600 CL46 2Rx4 1.1V ECC RDIMM server RAM

SKU CH-0TJJ-1Z0J4

Single 64GB DDR5 5600 CL46 ECC registered RDIMM at 1.1V for workstation or server upgrades

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

Show 4 more

Rank 2Rx4

  • 64GB capacity lets servers handle larger workloads
  • DDR5 5600 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design detects and corrects memory errors
  • JEDEC-standard 1.1V operation reduces power draw per module
  • Single 2Rx4 rank 288-pin DIMM simplifies upgrade planning

ECC RDIMM for workstations and servers

This 64GB DDR5 5600 module is an ECC registered DIMM built for select workstations and servers. It is not compatible with standard desktop computers and cannot be mixed with unbuffered or load-reduced memory. The single 2Rx4 stick runs at 1.1V with CL46 latency.

Check platform and memory rules before ordering

Verify that your system supports DDR5 ECC registered RDIMMs and that the motherboard accepts 2Rx4 modules at this speed. Do not combine this module with unbuffered or load-reduced DIMMs. OWC recommends using identical capacity, speed and manufacturer across all populated slots.

Standard voltage and no heat spreader

The module operates at the JEDEC-standard 1.1V without a heat spreader. Registered buffering and on-die ECC add minimal overhead in typical server workloads. Power draw and thermals remain within normal DDR5 registered DIMM limits for the rated speed.

How it compares

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

Price $1,725.99
Pricier than about 85% 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 $26.97 per GB
Pricier than about 88% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latencyCL46
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

Does the OWC 64GB DDR5 5600 module ship alone or as part of a kit, and are any additional components required for installation?

The module is sold as a single 64GB DDR5 5600 PC5-44800 CL46 2Rx4 288-pin 1.1V ECC Registered DIMM. No extra parts are needed beyond a compatible server or workstation slot.

Should I choose this 64GB 2Rx4 CL46 registered ECC stick or look for a different capacity or rank configuration for my server?

Select this 64GB 2Rx4 CL46 registered ECC module when your platform requires DDR5 5600 registered memory at 1.1V. Match capacity, speed, rank and voltage exactly across all slots for best stability.

What does the DDR5 5600 (PC5-44800) rating actually deliver once the module is installed in a supported system?

The module runs at the JEDEC-standard 5600 MT/s data rate with CL46 latency at 1.1V, providing error-correcting registered performance for compatible workstations and servers.

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