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Green circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 64GB DDR5-4800 CL40 2Rx4 ECC RDIMM HP Cray XD220v XD225v XD295v XD670

SKU CH-0KJF-RVR2T

Adds 64 GB of DDR5-4800 ECC registered memory to HP Cray XD220v, XD225v, XD295v and XD670 servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC protection for data integrity in servers
  • 64GB capacity extends memory for heavy workloads
  • DDR5 4800 speed with CL40 latency
  • Registered DIMM design for multi-socket stability
  • Validated for HP Cray XD220v XD225v XD295v XD670

System-Specific DDR5 RDIMM

This OWC 64GB DDR5-4800 CL40 ECC Registered RDIMM is built for HP Cray XD220v, XD225v, XD295v and XD670 servers. It delivers 64GB per module at PC5-38400 speed with a 2Rx4 rank structure and 1.1V operation. The 288-pin form factor fits the validated memory slots in these specific platforms. OWC tests every module in-house to meet JEDEC and RoHS standards.

Suited for HP Cray server upgrades

Administrators expanding memory in the listed HP Cray models will find a direct replacement for part numbers P43331-B21, P46970-H21, P50312-B21, P58358-H21 and P62604-B21. Builders of standard desktops or workstations requiring unbuffered or load-reduced DIMMs cannot use this registered ECC module. Systems that do not support DDR5 RDIMM architecture must look elsewhere for compatible memory.

Registered ECC DDR5 at 4800 MT/s

The defining specification is DDR5-4800 registered ECC with CL40 latency in a 2Rx4 64GB density. This combination determines whether the module will initialise and operate correctly in the target HP Cray XD220v, XD225v, XD295v or XD670 platforms. Verify the server memory configurator requires registered ECC RDIMMs before ordering.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,440.99
Pricier than about 64% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $22.52 per GB
Pricier than about 67% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number4R8D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHP Cray XD220v
HP Cray XD225v
HP Cray XD295v
HP Cray XD670

Other versions of this model

5 more in the same range

Questions about this item

What slot type and pin count does this 64GB DDR5 module require?

It uses a standard 288-pin DDR5 RDIMM slot, the same form factor used in the HP Cray XD220v, XD225v, XD295v and XD670 servers.

What is the correct installation sequence for this registered ECC DIMM?

Power down the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then populate channels per the HP Cray service guide.

When should this 2Rx4 ECC registered module be replaced?

Replace it if the system logs uncorrectable ECC errors, fails memory diagnostics, or when upgrading capacity beyond the current 64GB per DIMM configuration.

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