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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

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

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.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $2,936.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $22.95 per GB
Pricier than about 84% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R4128S
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

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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