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Green rectangular DDR5 ECC RDIMM module with black chips on both sides, no heat spreader, 288 gold pins along bottom edge

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM 1.1V 288-pin memory upgrade

SKU CH-YN9M-HR7YV

128 GB DDR5 4800 CL40 ECC registered RDIMM for HP ProLiant Gen11 servers

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

Capacity 128GB

  • 128GB capacity fits large workloads in a single module
  • DDR5 4800 speed delivers high bandwidth for server tasks
  • ECC registered design protects data integrity under load
  • 1V operation reduces power draw per module
  • Validated for HP ProLiant DL385 Gen11 DL560 Gen11 DX360 Gen11 DX365 Gen11 ML350 Gen11

Server memory module

This 128 GB DDR5 4800 CL40 4Rx4 ECC registered RDIMM operates at 1.1 V and uses a 288-pin form factor. It is built for HP ProLiant DL385 Gen11, DL560 Gen11, DX360 Gen11, DX365 Gen11 and ML350 Gen11 servers. The module replaces several HP part numbers and meets JEDEC and RoHS standards. It will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced ECC memory.

Thermals and power

The module draws power at the rated 1.1 V without a heat spreader, relying on server chassis airflow for cooling. Registered buffering and ECC circuitry add minimal overhead to the power budget. In normal operation the DIMM runs within JEDEC thermal limits, producing no audible noise of its own. System fan curves will determine the acoustic profile in a populated chassis.

Sustained load behaviour

Under continuous workloads the registered design helps maintain signal integrity across all four ranks at 4800 MT/s. ECC correction operates transparently during extended data transfers. The single 128 GB density fills one slot, leaving remaining channels available for further expansion. Compatibility is limited to the listed ProLiant Gen11 platforms; other servers or workstations are not supported.

Privalumai

  • 128GB capacity fits large workloads in a single module
  • DDR5 4800 speed delivers high bandwidth for server tasks
  • ECC registered design protects data integrity under load
  • 1V operation reduces power draw per module
  • Validated for HP ProLiant DL385 Gen11 DL560 Gen11 DX360 Gen11 DX365 Gen11 ML350 Gen11

Specifikacijos

BrandOWC
Part Number4R8D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
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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How do I install this 288-pin DDR5 ECC RDIMM in my HP ProLiant DL385 Gen11 and what step is often missed?

Power down the server, open the chassis, align the notch on the module with the slot key, press firmly until both ejector clips click, then enable ECC in BIOS — skipping the BIOS step leaves error correction inactive.

What maintenance or replacement will this 128GB 4Rx4 module need later?

No routine maintenance is required; the module has no heat spreader or moving parts. Replace it only if memory diagnostics report uncorrectable errors or if you upgrade to a higher capacity configuration.

What limit appears first when this CL40 1.1V RDIMM runs sustained workloads on a DL560 Gen11?

The CAS latency of 40 cycles and fixed 1.1V voltage set the timing and thermal ceiling; sustained heavy loads will hit latency-bound throughput before any other module limit is reached.

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