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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

  • Capacity64GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS LatencyCL46
  • Voltage1.1V
  • ECCYes

Capacity 64GB

Show 4 more configurations

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.

Highlights

  • 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

Specifications

BrandOWC
Part Number5R6D52R464GB
Capacity64GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS LatencyCL46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

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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