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Four green DDR5 RDIMM sticks in static bags

OWC

OWC 512GB (4x128GB) DDR5 4800 CL40 4Rx4 ECC Registered RDIMM server RAM

SKU CH-088C-PHMD9

A 512GB quad-channel DDR5 4800 CL40 registered ECC kit for servers and workstations

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 512GB (4 x 128GB)

Voir les 4 autres configurations

Rank 4Rx4

  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM detects and corrects memory errors
  • 1 V operation reduces power draw in dense configs
  • JEDEC and ROHS compliant for warranty-safe upgrades

Capacity and kit layout

This OWC kit delivers 512GB of DDR5 server memory across four 128GB modules. It is built for workstations and servers that require registered ECC RDIMMs and will not function in standard desktop computers.

Registered ECC with 4Rx4 organisation

Each module uses a 4Rx4 rank structure and registered buffering to support high-density configurations. The kit cannot be mixed with unbuffered or load-reduced ECC memory, so the platform must accept registered RDIMMs exclusively.

DDR5 4800 CL40 at 1.1V

The modules run at DDR5 4800 (PC5-38400) with a CAS latency of 40 and operate at 1.1V. This speed and voltage combination determines whether the memory matches the motherboard's qualified vendor list.

Points forts

  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered RDIMM detects and corrects memory errors
  • 1 V operation reduces power draw in dense configs
  • JEDEC and ROHS compliant for warranty-safe upgrades

Caractéristiques

BrandOWC
Part Number4R8D54R4512S
Capacity512GB (4 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Autres versions de ce modèle

5 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

Will the 128 GB 4Rx4 registered modules need any firmware updates or periodic re-seating over time?

No firmware updates or scheduled re-seating are required for these JEDEC-standard 288-pin DDR5 4800 CL40 1.1 V ECC registered DIMMs; they are designed for continuous server operation.

What limit appears first when the 512 GB kit runs at full DDR5 4800 speed under sustained load?

The CL40 latency at 4800 MT/s and the 1.1 V operating voltage define the electrical envelope; thermal limits depend on chassis airflow since the modules have no heat spreaders.

How much power and heat do the four 128 GB sticks produce when the server runs all day?

Each 1.1 V DDR5 4800 registered module draws low power typical for 4Rx4 ECC RDIMMs; total heat scales with all four populated slots, so adequate case airflow is the main cooling consideration.

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