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Green bare DDR5 ECC RDIMM module with black chips and gold contacts

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 288-pin 1.1V ECC RDIMM Dell R6625 R760 R7615 R7625

SKU CH-T347-EN05J

128 GB DDR5 4800 CL40 ECC registered RDIMM for Dell PowerEdge R6625, R760, R7615 and R7625 servers

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB

  • 128GB single-module capacity lets you maximise server memory density with fewer slots
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects data errors to protect critical operations
  • 1V operating voltage reduces power draw in dense configurations
  • Validated for Dell PowerEdge R6625, R760, R7615 and R7625 servers

System-Specific Server Memory Upgrade

This OWC DDR5 module delivers 128GB of registered ECC memory in a single 288-pin RDIMM. It is built for Dell PowerEdge R6625, R760, R7615 and R7625 servers that require DDR5 4800 registered DIMMs. The module will not work in standard desktop computers or systems needing unbuffered or load-reduced memory.

Thermals Noise and Power Draw

Operating at 1.1V, the module runs at the standard DDR5 voltage for registered server memory. No heat spreader is fitted, so airflow through the server chassis provides cooling. Registered buffering adds minimal latency while maintaining signal integrity across fully populated memory channels.

Registered ECC DDR5 Compatibility Requirement

The module uses 4Rx4 organisation with CL40 timing at PC5-38400 speed. It replaces Dell part numbers AC449974 and SNPMMWR9C/128G. Buyers must verify their server requires registered ECC RDIMMs, as this module cannot be mixed with unbuffered or load-reduced DIMMs in the same system.

Highlights

  • 128GB single-module capacity lets you maximise server memory density with fewer slots
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects data errors to protect critical operations
  • 1V operating voltage reduces power draw in dense configurations
  • Validated for Dell PowerEdge R6625, R760, R7615 and R7625 servers

Specifications

BrandOWC
Part Number4R8D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge R6625
Dell PowerEdge R760
Dell PowerEdge R7615
Dell PowerEdge R7625

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Questions about this item

How do I install this 288-pin DDR5 RDIMM in a Dell PowerEdge R760 and what step is often missed?

Power down the server, open the chassis, align the module notch with the slot key, press firmly until both latches click, then verify in BIOS that the 4Rx4 rank is recognised; the step often missed is confirming the registered ECC type matches the slot population rules for the R760.

What maintenance or replacement will this 128GB module need over its service life?

No routine maintenance is required; if a memory error occurs the module is covered by a limited lifetime warranty with advanced replacement, so the only future action would be a warranty swap using the same 1.1V 4800 CL40 specification.

What limit appears first when this RDIMM runs at sustained load in a Dell PowerEdge R7625?

The JEDEC-rated 4800 MT/s speed and CL40 latency at 1.1V set the performance ceiling; thermal throttling is unlikely because the module has no heat spreader and server airflow is designed for registered DIMMs.

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