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Two green DDR5 ECC registered DIMMs with gold contacts

OWC

OWC 64GB (2x32GB) DDR5 4800 ECC RDIMM memory upgrade for HP ProLiant Gen11

SKU CH-D5B1-R2S1F

A 64 GB DDR5 ECC registered dual-rank kit running at 4800 MT/s for HP ProLiant Gen11 servers

  • Capacity64GB (2 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 64GB (2 x 32GB)

  • ECC registered design protects data integrity in critical workloads
  • 64GB kit (2×32GB) expands server capacity for virtualization
  • DDR5 4800 speed delivers high throughput for demanding applications
  • 1V operation reduces power draw in dense deployments
  • Validated for HP ProLiant DL320, DL380a and DX320 Gen11

Server ECC DDR5 upgrade

This OWC kit delivers 64 GB of DDR5 4800 ECC registered memory in two 32 GB modules for HP ProLiant Gen11 servers. It targets administrators who need error-correcting registered DIMMs to maintain data integrity in DL320, DL380a or DX320 Gen11 systems. The modules follow JEDEC PC5-38400 CL40 specifications at 1.1 V.

Thermals and power draw

Registered DDR5 at 1.1 V runs within standard server DIMM power envelopes, so the existing ProLiant cooling and power infrastructure handles the load without extra provisioning. No heat spreaders are fitted, relying on chassis airflow for thermal management. Acoustic impact is unchanged because the memory adds no moving parts.

Compatibility constraints

The registered ECC design prevents use in standard desktops or workstations that accept only unbuffered memory, and it cannot be mixed with load-reduced DIMMs. JEDEC and RoHS compliance ensure the upgrade keeps the original server warranty intact. Buyers needing unbuffered or consumer DDR5 modules should look elsewhere.

Points forts

  • ECC registered design protects data integrity in critical workloads
  • 64GB kit (2×32GB) expands server capacity for virtualization
  • DDR5 4800 speed delivers high throughput for demanding applications
  • 1V operation reduces power draw in dense deployments
  • Validated for HP ProLiant DL320, DL380a and DX320 Gen11

Caractéristiques

BrandOWC
Part Number4R8D52R8064P
Capacity64GB (2 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 sur cet article

How do I install the 288-pin DDR5 RDIMMs in my HP ProLiant Gen11, and what step do people often miss?

Power down the server, open the chassis, align each 288-pin module with the slot key, press firmly until both ejector tabs click, then verify in BIOS that all 64 GB are recognised at 4800 MT/s; the step often missed is seating both tabs fully so the register engages.

What maintenance or replacement will this 2Rx8 ECC registered kit need later?

No scheduled maintenance is required; if a module fails the limited lifetime warranty covers replacement, but you must replace the failed 32 GB stick with an identical 2Rx8 DDR5 4800 CL40 1.1 V registered DIMM to keep ECC and rank matching.

What limit appears first when the kit runs sustained workloads in a Gen11 server?

The 1.1 V JEDEC voltage and CL40 latency set the thermal and timing ceiling; sustained heavy traffic will hit the 4800 MT/s data-rate limit before any higher speed profile can be applied.

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