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Four green DDR5 RDIMM modules in anti-static tray

OWC

OWC 128GB (4x32GB) DDR5 4800 CL40 ECC Registered RDIMM for HP ProLiant DL320 Gen11 DL380a Gen11 DX320 Gen11

SKU CH-W9G8-QGJRH

128GB kit of four 32GB DDR5 4800 CL40 ECC registered RDIMMs for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers

  • 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 across four 32 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation meets JEDEC standard for power efficiency
  • Validated for HP ProLiant DL320 Gen11 DL380a Gen11 DX320 Gen11

Server Memory Upgrade Kit

This OWC kit supplies 128GB of DDR5 registered ECC memory in four 32GB modules. It is built for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers that require registered DIMMs. Workstations or desktops needing unbuffered memory cannot use these modules.

288-Pin Registered DIMM Format

Each module uses the standard 288-pin DDR5 RDIMM form factor with a 2Rx8 organisation. The registered buffer reduces electrical load on the server memory controller, allowing the four modules to operate together at the rated speed. No heat spreader is fitted, so airflow in the server chassis handles cooling directly.

DDR5 4800 at 1.1V Operation

The modules run at DDR5 4800 (PC5-38400) with CL40 latency at the JEDEC-standard 1.1V. ECC circuitry corrects single-bit errors in real time, protecting data integrity during continuous workloads. Lower voltage and the absence of a spreader keep power draw and acoustic contribution minimal in normal server operation.

Highlights

  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation meets JEDEC standard for power efficiency
  • Validated for HP ProLiant DL320 Gen11 DL380a Gen11 DX320 Gen11

Specifications

BrandOWC
Part Number4R8D52R8128S
Capacity128GB (4 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemHP ProLiant DL320 Gen11
HP ProLiant DL380a Gen11
HP ProLiant DX320 Gen11

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Questions about this item

What DDR5 speed and CAS latency does this 288-pin RDIMM kit run at?

The four 32 GB modules operate at DDR5 4800 with a CL40 latency, delivering PC5-38400 bandwidth.

Which physical slot type and voltage do these 288-pin ECC Registered DIMMs require?

They fit standard 288-pin DDR5 RDIMM slots and run at 1.1 V.

How are the four 32 GB 2Rx8 sticks installed in an HP ProLiant DL320 Gen11, and what common step is missed?

Populate all four channels in the order shown in the server's service guide; the step often missed is enabling ECC Registered mode in BIOS before boot.

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