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Four green DDR5 RDIMM modules with gold contacts and black chips

OWC

OWC 64GB (4x16GB) DDR5 5600 CL46 ECC Registered RDIMM Server RAM

SKU CH-VWRZ-AJ2RR

Four 16 GB DDR5 registered ECC modules running at 5600 MT/s with CL46 latency and 1.1 V operation for compatible servers

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS LatencyCL46
  • Voltage1.1V
  • ECCYes

Capacity 64GB (4 x 16GB)

Show 4 more configurations

Rank 1Rx8

  • ECC registered design protects data integrity in critical workloads
  • 5600 MT/s DDR5 speed accelerates server responsiveness
  • 1 V operation reduces power draw per module
  • Four 16 GB modules deliver 64 GB total capacity
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server ECC RDIMM Kit

This OWC kit provides 64 GB of DDR5 memory across four 16 GB registered DIMMs. It is built for workstations and servers that require ECC error correction and registered signal buffering. Standard desktop motherboards cannot use these modules.

DDR5 5600 registered limits

The modules run at DDR5 5600 (PC5-44800) with CL46 latency at 1.1 V. Registered DIMMs add a clock cycle of buffering, so the memory controller must support registered operation. Mixing with unbuffered or load-reduced DIMMs is not supported by the platform.

Platform compatibility check

Verify that your workstation or server motherboard lists DDR5 RDIMM support and accepts 1Rx8 registered modules. Confirm the maximum capacity per slot and the total number of populated channels. The kit contains four DIMMs for dual-channel population.

Highlights

  • ECC registered design protects data integrity in critical workloads
  • 5600 MT/s DDR5 speed accelerates server responsiveness
  • 1 V operation reduces power draw per module
  • Four 16 GB modules deliver 64 GB total capacity
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

BrandOWC
Part Number5R6D51R8064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS LatencyCL46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions about this item

Should I buy the 64GB kit as four 16GB modules or look for a different capacity?

The kit supplies 64GB total across four 16GB DDR5 5600 CL46 registered ECC RDIMMs, giving you dual-channel population with matched modules from one manufacturer.

What does the 5600 MT/s rating actually deliver inside a server?

At DDR5 5600 the modules run at 5600 MT/s with CL46 latency at 1.1V, providing the standard JEDEC bandwidth for registered ECC workloads.

Does the 288-pin RDIMM interface limit speed or capacity in practice?

The 288-pin registered DDR5 form factor caps operation at the JEDEC 5600 MT/s spec and requires a platform that supports registered ECC memory.

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