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Four green DDR5 RDIMM modules, bare circuit boards with gold contacts, no heat spreaders

OWC

OWC 256GB (4x64GB) DDR5 4800 CL40 ECC Registered RDIMM Memory Upgrade Kit

SKU CH-4Y8Z-XRAE8

256 GB kit of four 64 GB DDR5 4800 CL40 ECC registered RDIMMs for HP Cray XD220v, XD225v, XD295v and XD670 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 across four 64 GB modules
  • DDR5 4800 speed with CL40 latency at 1.1 V
  • ECC registered RDIMM for server data integrity
  • 2Rx4 dual-rank organisation for higher density
  • Validated for HP Cray XD220v XD225v XD295v XD670

OWC 256GB DDR5 ECC RDIMM kit

This OWC kit provides 256GB of DDR5 4800 memory in four 64GB registered DIMMs. It is built for HP Cray XD220v, XD225v, XD295v and XD670 servers that require ECC registered modules. The CL40 2Rx4 modules operate at 1.1V and conform to JEDEC PC5-38400 standards.

Suited for HP Cray server upgrades

System administrators expanding memory in the listed HP Cray models will find the correct form factor, speed and ECC type here. Buyers who need unbuffered memory for workstations or desktop platforms cannot use this kit. It also cannot be mixed with load-reduced DIMMs in the same system.

Registered ECC DDR5 4800 CL40 spec

The modules are 288-pin DDR5 registered DIMMs with ECC, running at 4800 MT/s (PC5-38400) and CL40 latency. This registered ECC specification is the single factor that determines compatibility with the target HP Cray servers. Only systems designed for registered ECC DDR5 at this speed can accept the kit.

Privalumai

  • 256 GB total capacity across four 64 GB modules
  • DDR5 4800 speed with CL40 latency at 1.1 V
  • ECC registered RDIMM for server data integrity
  • 2Rx4 dual-rank organisation for higher density
  • Validated for HP Cray XD220v XD225v XD295v XD670

Specifikacijos

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 Cray XD220v
HP Cray XD225v
HP Cray XD295v
HP Cray XD670

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What DDR5 speed and CAS latency does this 288-pin RDIMM kit run at?

The kit operates at DDR5 4800 (PC5-38400) with CL40 latency.

Will these 288-pin registered DIMMs fit the HP Cray XD220v, XD225v, XD295v and XD670?

Yes, the 288-pin ECC registered RDIMM form factor is designed for those HP Cray models.

How are the four 64 GB modules installed, and what common step is missed?

Install all four 64 GB RDIMMs in the correct server slots; the step often missed is verifying the platform requires registered ECC and cannot mix with unbuffered or load-reduced memory.

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