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Two green DDR5 RDIMM modules with gold contacts and black chips

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC Registered RDIMM HP Gen11

SKU CH-V6B1-8AH6W

Dual 32 GB DDR5 4800 ECC registered RDIMMs totalling 64 GB 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 servers
  • 64GB kit with two 32GB modules expands memory capacity
  • DDR5 4800 CL40 at 1.1V delivers rated speed
  • Validated for HP ProLiant Gen11 DL385 DL560 DX360 DX365 ML350
  • JEDEC and RoHS compliant for warranty-safe upgrades

HP Gen11 DDR5 Registered Kit

This OWC kit supplies 64GB of DDR5 memory as two 32GB ECC Registered RDIMMs. It is built for HP ProLiant DL385 Gen11, DL560 Gen11, DX360 Gen11, DX365 Gen11 and ML350 Gen11 servers that require registered error-correcting modules. Standard desktop boards cannot use this memory.

Verify registered ECC requirement

Before ordering, confirm that your ProLiant Gen11 system specifies DDR5 4800 registered ECC RDIMMs and that no unbuffered or load-reduced modules are already installed. Mixing registered memory with other ECC types will prevent the server from posting. Check the service guide for the maximum supported capacity per channel.

Sustained server workload behaviour

The modules run at 1.1V with CL40 latency and a 2Rx8 organisation, delivering steady throughput for virtualisation, database and compute tasks. Error correction operates continuously to maintain data integrity during extended operation. JEDEC-standard construction ensures consistent timing without thermal throttling under load.

Highlights

  • ECC registered design protects data integrity in servers
  • 64GB kit with two 32GB modules expands memory capacity
  • DDR5 4800 CL40 at 1.1V delivers rated speed
  • Validated for HP ProLiant Gen11 DL385 DL560 DX360 DX365 ML350
  • JEDEC and RoHS compliant for warranty-safe upgrades

Specifications

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 DL385 Gen11
HP ProLiant DL560 Gen11
HP ProLiant DX360 Gen11
HP ProLiant DX365 Gen11
HP ProLiant ML350 Gen11

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Questions about this item

What comes in the OWC 64GB kit and do I need anything else to install it in an HP ProLiant DL385 Gen11?

The kit contains two 32GB DDR5 4800 CL40 2Rx8 288-pin 1.1V ECC Registered RDIMM modules. No extra parts are required for installation in the listed HP ProLiant Gen11 servers.

Should I choose the 64GB 2x32GB kit or a different capacity for my HP ProLiant DX360 Gen11?

This 64GB kit provides two 32GB registered ECC DIMMs validated for the DX360 Gen11. Select it when your workload needs 64GB in a two-module configuration; choose another OWC kit if you need a different total capacity or module count.

What does the DDR5 4800 CL40 rating mean for real-world performance in an HP ProLiant ML350 Gen11?

The modules run at 4800 MT/s with CAS latency 40 at 1.1V, delivering JEDEC-standard bandwidth and error correction for stable operation in the ML350 Gen11. Actual throughput depends on the server's memory controller and population rules.

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