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Four green DDR5 RDIMM modules with gold contacts, no heat spreaders

OWC

OWC 4R8D54R4512S 512GB (4x128GB) DDR5 4800 CL40 ECC Registered RDIMM

SKU CH-QXZQ-GTDK0

A 512 GB DDR5-4800 ECC registered RDIMM kit of four 128 GB modules for HP ProLiant Gen11 servers

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

Capacity 512GB (4 x 128GB)

  • 512GB kit expands server memory capacity
  • Four 128GB modules populate all channels
  • DDR5 4800 speed matches platform specification
  • ECC registered design protects data integrity
  • 1V operation reduces power draw

Server-grade DDR5 kit

This 512GB kit contains four 128GB DDR5 4800 CL40 ECC Registered RDIMMs built for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers. It delivers 512GB of registered, error-correcting memory for workloads that require data integrity and high capacity.

Installation notes

Modules use the standard 288-pin DDR5 form factor and operate at 1.1V, so they seat in the server's DIMM slots without extra cabling. The kit will not work in standard desktop systems and cannot be mixed with unbuffered or load-reduced ECC memory.

Sustained operation

JEDEC-compliant DDR5 at 4800 MT/s with CL40 latency provides stable throughput for continuous server duties such as virtualization, database caching and large-scale file serving. Registered buffering reduces electrical load on the memory controller during prolonged heavy use.

Highlights

  • 512GB kit expands server memory capacity
  • Four 128GB modules populate all channels
  • DDR5 4800 speed matches platform specification
  • ECC registered design protects data integrity
  • 1V operation reduces power draw

Specifications

BrandOWC
Part Number4R8D54R4512S
Capacity512GB (4 x 128GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant DL320 Gen11
HP ProLiant DL380a Gen11
HP ProLiant DX320 Gen11

Other versions of this model

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Questions about this item

How do I verify the kit is running at DDR5 4800 CL40 with ECC registered after installation?

Enter the server BIOS or use a hardware tool such as IPMI to confirm the memory speed reads 4800 MT/s, CAS latency shows 40, and the module type is reported as ECC Registered RDIMM.

What ships in the box and is anything else required to complete the upgrade?

The package contains four 128GB 288-pin DDR5 ECC Registered RDIMMs totalling 512GB; no additional parts are needed for the listed HP ProLiant Gen11 servers.

Should I choose this 512GB 4Rx4 kit or a different capacity for my HP ProLiant DL320 Gen11?

Select this 512GB (4 × 128GB) 4Rx4 kit when the workload needs maximum registered ECC capacity per channel; choose a smaller kit only if the server's memory slots or budget cannot accommodate the full set.

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