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Four green DDR5 ECC registered RDIMM modules in static bags

OWC

OWC 256GB (4x64GB) DDR5 4800 CL40 2Rx4 ECC Registered RDIMM memory upgrade

SKU CH-G4QQ-7DP5M

A 256 GB DDR5-4800 ECC registered RDIMM kit of four 64 GB modules for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 256GB (4 x 64GB)

  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity in critical systems
  • 1 V operation reduces power draw in dense configurations
  • Validated for HP ProLiant DL320 Gen11 DL380a Gen11 DX320 Gen11

Server-grade capacity

This kit provides 256GB of DDR5 memory across four 64GB registered DIMMs. It is built for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers that require ECC registered modules. Standard desktop systems cannot use this memory.

Low-voltage operation

Each module runs at 1.1V and carries a CL40 latency rating at the 4800 MT/s JEDEC speed. Registered buffering and on-die ECC reduce electrical load on the memory controller while correcting single-bit errors in flight. No heat spreaders are fitted, so airflow across the DIMM rows handles thermal dissipation.

288-pin registered form factor

The 2Rx4 organisation and 288-pin RDIMM layout match the ProLiant Gen11 memory slots exactly. Modules must be installed in matched sets and cannot be mixed with unbuffered or load-reduced DIMMs. JEDEC and RoHS compliance ensures a warranty-safe upgrade path for the supported platforms.

Points forts

  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design protects data integrity in critical systems
  • 1 V operation reduces power draw in dense configurations
  • Validated for HP ProLiant DL320 Gen11 DL380a Gen11 DX320 Gen11

Caractéristiques

BrandOWC
Part Number4R8D52R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant DL320 Gen11
HP ProLiant DL380a Gen11
HP ProLiant DX320 Gen11

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Questions sur cet article

How do I install the four 64 GB DDR5 4800 RDIMMs in my HP ProLiant DL320 Gen11, and what step is often missed?

Power down the server, open the chassis, and seat each 288-pin module firmly until the ejector clips lock; the step most people skip is confirming in iLO that all four 64 GB ranks appear at 4800 MT/s before closing the cover.

What maintenance or replacement will this 256 GB kit need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; replacement is only needed if a DIMM fails, which the limited lifetime warranty covers with an advanced-replacement process.

What limit appears first when the 2Rx4 registered ECC memory runs sustained workloads at 1.1 V?

The registered buffer and 2Rx4 organisation add one cycle of latency, so the CL40 timing ceiling is reached before any thermal or voltage limit under continuous load.

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