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Two green DDR5 ECC RDIMM modules, bare circuit boards with gold contacts

OWC

OWC 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM for HP ProLiant Gen11

SKU CH-9TTF-G0XR3

128 GB DDR5 4800 ECC registered dual-rank kit for HP ProLiant Gen11 servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw in compatible ProLiant Gen11 servers
  • JEDEC and RoHS compliant for warranty-safe upgrades

HP ProLiant Gen11 server memory upgrade

This kit provides 128GB of DDR5 ECC registered memory across two 64GB modules. It is built for HP ProLiant DL325, DL345, DL360, DL365 and DL380 Gen11 servers that require registered DIMMs with error correction. The modules run at 4800MHz with CL40 latency and 1.1V operation.

Suits administrators expanding Gen11 server capacity

IT teams adding memory to compatible HP ProLiant Gen11 platforms will find this kit a direct fit. It is not for desktop PCs, workstations that need unbuffered DIMMs, or systems that require load-reduced memory. Mixing with non-registered modules is not supported.

128GB kit handles virtualisation

Two 64GB dual-rank modules deliver substantial headroom for multi-tenant virtualisation, in-memory databases and large container clusters. Capacity limits appear when workloads exceed the total 128GB or when the server's memory slot count restricts further expansion.

Highlights

  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw in compatible ProLiant Gen11 servers
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

BrandOWC
Part Number4R8D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant DL325 Gen11
HP ProLiant DL345 Gen11
HP ProLiant DL360 Gen11
HP ProLiant DL365 Gen11
HP ProLiant DL380 Gen11

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Questions about this item

Will this 288-pin DDR5 ECC RDIMM kit work in a standard desktop motherboard?

No. The kit is registered ECC DDR5 designed for HP ProLiant Gen11 servers and will not function in consumer desktop boards that require unbuffered non-ECC memory.

Can I add these two 64 GB modules to existing DDR5 RDIMMs already installed in my DL380 Gen11?

Yes, provided the installed modules are also DDR5 4800 registered ECC 2Rx4 1.1 V DIMMs; mixing with unbuffered or load-reduced memory is not supported.

How do I confirm the kit is running at 4800 MT/s CL40 after installation?

Check the system BIOS or iLO interface — it will report each DIMM as 64 GB DDR5 4800 PC5-38400 CL40 registered ECC at 1.1 V.

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