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Green bare circuit board DDR5 ECC RDIMM 288-pin module

OWC

OWC 128GB DDR5 5600 ECC RDIMM 4Rx4 1.1V CL46 memory upgrade

SKU CH-JFYF-KEZ0J

A 128 GB DDR5 5600 ECC registered DIMM for compatible Supermicro SuperServer systems

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS Latency46
  • Voltage1.1V
  • ECCYes

Capacity 128GB

  • ECC registered design protects data integrity in server workloads
  • Single 128GB module delivers high capacity per DIMM slot
  • DDR5 5600 speed with CL46 latency supports demanding applications
  • 1V operation reduces power draw in dense configurations
  • Validated for Supermicro SuperServer SYS-821GE-TNHR and related models

128GB DDR5 5600 ECC RDIMM for Supermicro

This OWC module provides 128GB of DDR5 5600 memory in a 288-pin ECC Registered DIMM form factor. It operates at 1.1V with CL46 latency and a 4Rx4 rank configuration. The part number is 5R6D54R4128G and it is validated for specific Supermicro SuperServer models including SYS-821GE-TNHR and SYS-821GV-TNR.

Suited for server and workstation upgrades only

This memory is designed for compatible Supermicro SuperServer platforms such as the SYS-E403-13E-FRN2T, SYS-F511E2-RT and SYS-F521E3-RTB. It will not function in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or load-reduced ECC modules. Buyers needing non-ECC or unregistered memory should look elsewhere.

4Rx4 registered ECC architecture decides fit

The single 128GB module uses a 4Rx4 organisation with registered ECC buffering. This rank structure and buffering type must match the server memory controller requirements exactly. Verify the platform supports 4Rx4 registered DIMMs before purchase. The module is JEDEC-standard and RoHS compliant.

Highlights

  • ECC registered design protects data integrity in server workloads
  • Single 128GB module delivers high capacity per DIMM slot
  • DDR5 5600 speed with CL46 latency supports demanding applications
  • 1V operation reduces power draw in dense configurations
  • Validated for Supermicro SuperServer SYS-821GE-TNHR and related models

Specifications

BrandOWC
Part Number5R6D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS Latency46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro SuperServer SYS-821GE-TNHR
Supermicro SuperServer SYS-821GV-TNR
Supermicro SuperServer SYS-E403-13E-FRN2T
Supermicro SuperServer SYS-F511E2-RT
Supermicro SuperServer SYS-F521E3-RTB

Other versions of this model

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Questions about this item

Will this 288-pin DDR5 RDIMM fit the memory slots in my Supermicro SuperServer SYS-821GE-TNHR?

Yes. The module uses the standard 288-pin DDR5 RDIMM form factor required by the listed Supermicro SuperServer models.

What is the correct way to seat this 128 GB ECC registered module, and what step is often missed?

Align the notch with the slot key, press down firmly until both side latches click shut, and verify the system detects the full 128 GB capacity at 5600 MT/s.

When should I expect to replace this 1.1 V DDR5 5600 CL46 memory?

DDR5 RDIMMs have no scheduled replacement interval; replace only if diagnostics report uncorrectable ECC errors or the module fails to train at 5600 MT/s.

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