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Green circuit board with black memory chips in a single row, gold edge connector, no heat spreader

OWC

OWC 128GB DDR5 4800 PC5-38400 CL40 4Rx4 288-pin 1.1V ECC Registered RDIMM server RAM

SKU CH-EP0Z-473K6

A single 128GB DDR5 4800 ECC registered RDIMM with CL40 latency and 1.1V operation for compatible servers and workstations

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

Capacity 128GB

Ver 4 configuraciones más

Rank 4Rx4

  • 128 GB capacity supports heavy virtualization workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • CL40 latency provides responsive data access
  • 1 V operation reduces server power draw
  • ECC registered design protects data integrity in critical applications

Server-grade DDR5 ECC RDIMM

This module delivers 128GB of DDR5 4800 memory in a single 288-pin registered DIMM. It targets administrators upgrading or expanding select workstations and servers that require error-correcting, buffered memory. The CL40 latency and 1.1V operation follow JEDEC-standard specifications for reliable enterprise workloads. It is not compatible with standard desktop platforms or consumer motherboards.

Build integration and compatibility

The RDIMM installs directly into DDR5 RDIMM slots on qualified server or workstation boards that support 4Rx4 registered modules. It cannot be mixed with unbuffered or load-reduced ECC memory in the same system. Using identical capacity, speed and vendor modules across all populated channels ensures optimal stability. The registered buffer reduces electrical load on the memory controller, freeing headroom for larger total system capacities.

Thermals noise and power draw

Operating at the standard 1.1V DDR5 voltage, the module draws minimal power per gigabyte during typical server workloads. No heat spreader is fitted, so airflow across the PCB handles thermal dissipation in chassis designed for registered memory. Passive cooling remains silent, contributing no audible noise in rack or tower environments. Power consumption scales linearly with the number of populated DIMM slots.

Puntos fuertes

  • 128 GB capacity supports heavy virtualization workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • CL40 latency provides responsive data access
  • 1 V operation reduces server power draw
  • ECC registered design protects data integrity in critical applications

Especificaciones

BrandOWC
Part Number4R8D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo

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Preguntas sobre este artículo

What is the first limit that appears under sustained use with this 128GB DDR5 4800 CL40 4Rx4 registered module?

The JEDEC-standard 1.1 V operating voltage and CL40 latency define the electrical and timing boundaries that the memory controller enforces during continuous operation.

How much heat or noise does a 1.1 V registered 4Rx4 module add when running all day?

The module has no heat spreader and no moving parts, so it adds only the heat inherent to a 128 GB DDR5 4800 registered DIMM at 1.1 V; system airflow handles the thermal load.

What must the buyer already own for this 288-pin DDR5 ECC RDIMM to work?

A workstation or server motherboard with DDR5 RDIMM slots that supports 4Rx4 registered ECC modules at 4800 MT/s and 1.1 V.

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