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Four green DDR5 RDIMM modules in anti-static packaging

OWC

OWC 128GB (4x32GB) DDR5 4800 CL40 ECC Registered RDIMM server RAM

SKU CH-V5E0-VG610

Four 32 GB DDR5 4800 CL40 ECC registered RDIMMs totalling 128 GB for server or workstation upgrades

  • Capacity128GB (4 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity in critical tasks
  • JEDEC and ROHS compliant for warranty-safe upgrades
  • Low 1.1 V operation reduces power draw per module

128GB DDR5 ECC Registered Kit

This kit provides 128GB of DDR5 memory across four 32GB modules. It is built for workstations and servers that require error-correcting registered DIMMs. Standard desktop computers cannot use this memory type. Buyers needing unbuffered or consumer-grade modules should look elsewhere.

Sustained Operation With Registered ECC

Registered buffering and on-die ECC maintain data integrity during continuous workloads. The 1.1V operating voltage and JEDEC-standard timing keep power draw predictable under load. Modules lack heat spreaders, so adequate chassis airflow is required for long sessions.

Verify Platform Compatibility First

Confirm the motherboard supports DDR5 4800 registered ECC RDIMMs in a four-module population. Mixing with unbuffered or load-reduced DIMMs is not supported. All slots should be filled with identical modules for optimal stability.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity in critical tasks
  • JEDEC and ROHS compliant for warranty-safe upgrades
  • Low 1.1 V operation reduces power draw per module

Specifications

BrandOWC
Part Number4R8D52R4128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

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Questions about this item

How much power does the 1.1V DDR5 4800 kit draw under sustained server workloads?

Each 32GB module runs at 1.1V, matching the JEDEC DDR5 4800 standard; total power scales with the four-module load and your platform's memory-controller efficiency.

What must the motherboard provide for these 288-pin ECC Registered RDIMMs to function?

A DDR5 RDIMM slot wired for registered ECC operation, a chipset or CPU memory controller that supports 2Rx4 organisation at 4800 MT/s, and a BIOS that enables ECC and registered modes.

Can I mix this 2Rx4 CL40 kit with existing 1Rx4 or 2Rx8 registered ECC modules in the same server?

OWC advises using identical capacity, speed, rank and manufacturer for optimal performance; mixing different ranks or latencies may force the controller to down-clock or disable ECC.

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