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Green rectangular DDR5 ECC RDIMM module 288-pin no heat spreader

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 288-pin 1.1V ECC RDIMM HP Cray XD220v XD225v XD295v XD670

SKU CH-KWZE-H4X92

A 128 GB DDR5-4800 CL40 ECC registered DIMM for HP Cray XD220v, XD225v, XD295v and XD670 servers

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

Capacity 128GB

  • 128GB single module expands server memory capacity
  • DDR5 4800 CL40 delivers high-speed registered performance
  • ECC registered design protects data integrity in critical workloads
  • 1V operation reduces power draw per module
  • Validated for HP Cray XD220v XD225v XD295v XD670 systems

OWC 128GB DDR5 ECC RDIMM for HP Cray

This 128GB DDR5 4800 CL40 registered ECC module is built for HP Cray XD220v, XD225v, XD295v and XD670 servers. It targets administrators who need to expand memory capacity in these specific platforms without mixing buffered and unbuffered memory types.

Thermals noise and power draw

The module operates at 1.1V and carries no heat spreader, relying on the server chassis airflow for cooling. Registered buffering and ECC functionality add minimal latency overhead while maintaining signal integrity across four ranks under sustained workloads.

Build quality and daily implications

A single 288-pin DIMM replaces HP part numbers P43334-B21, P46972-H21, P50313-B21, P58360-H21, P62605-B21 and P63345-B21. The 4Rx4 organisation means each slot delivers maximum density, so planners must verify the platform rank limit per channel before populating all sockets.

Privalumai

  • 128GB single module expands server memory capacity
  • DDR5 4800 CL40 delivers high-speed registered performance
  • ECC registered design protects data integrity in critical workloads
  • 1V operation reduces power draw per module
  • Validated for HP Cray XD220v XD225v XD295v XD670 systems

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 Cray XD220v
HP Cray XD225v
HP Cray XD295v
HP Cray XD670

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How do I install this 288-pin DDR5 4800 RDIMM in an HP Cray XD220v and what step is often missed?

Power down the server, open the chassis, align the module key with the slot notch, press firmly until both ejector clips lock, then verify in BIOS that all 128GB are detected at 4800MHz CL40; the step often missed is confirming the memory mode matches the 4Rx4 registered configuration.

What maintenance or replacement will this ECC registered module need over its service life?

No scheduled maintenance is required; the module is covered by OWC's limited lifetime warranty with advanced replacement, so a verified failure results in a direct swap rather than a repair cycle.

What limit appears first when this 1.1V 128GB 4Rx4 kit runs sustained workloads on an XD295v?

The thermal ceiling of the passively cooled RDIMM is reached before any electrical throttle, so sustained throughput depends on chassis airflow keeping the 288-pin modules within JEDEC operating temperature.

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