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Two green DDR5 ECC registered DIMMs with gold contacts

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC Registered RDIMM for HP Cray XD220v XD225v XD295v XD670

SKU CH-TA3M-PVDNY

Dual 32 GB DDR5 4800 CL40 ECC registered RDIMMs at 1.1 V for HP Cray XD220v, XD225v, XD295v and XD670 servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 64GB (2 x 32GB)

  • 64GB kit expands server memory capacity
  • DDR5 4800 speed boosts data throughput
  • CL40 latency supports responsive workloads
  • ECC registered design protects data integrity
  • Validated for HP Cray XD220v XD225v XD295v XD670

64GB DDR5 4800 ECC RDIMM kit

This 64GB kit contains two 32GB DDR5 4800 CL40 registered ECC modules built for HP Cray XD220v, XD225v, XD295v and XD670 servers. It targets administrators expanding memory in those specific platforms where registered ECC DDR5 is required. The modules run at 1.1V and conform to JEDEC PC5-38400 standards. They are not compatible with standard desktop systems or unbuffered memory configurations.

Capacity and headroom for server workloads

The 64GB total capacity adds significant headroom for virtualisation, database caching and large dataset processing on the listed Cray models. Each 32GB 2Rx8 module fills a single 288-pin slot, allowing further expansion up to the platform's maximum supported capacity. Workloads that exceed this kit's capacity will require additional registered ECC modules of the same specification; mixing with unbuffered or load-reduced DIMMs is not supported.

Thermals and power draw in normal use

Operating at 1.1V without heat spreaders, the modules rely on the server's directed airflow for cooling. Registered ECC DDR5 at this voltage typically maintains low power draw per DIMM under sustained load, keeping thermal contribution minimal in a properly ventilated chassis. Acoustic impact is negligible as the modules have no moving parts and depend entirely on system fans.

How it compares

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

Price $1,700.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $26.58 per GB
Pricier than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R8064P
Total capacity64 GB (2 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
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

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Questions about this item

Will the 2Rx8 registered DDR5 4800 modules work with any unbuffered memory already installed in my HP Cray XD225v?

No, registered DIMMs cannot be mixed with unbuffered or load-reduced memory; all slots must use registered ECC modules for the system to operate correctly.

How can I confirm the 64 GB kit is running at DDR5 4800 CL40 after installation?

Check the BIOS memory information or a tool such as dmidecode; it should report 4800 MT/s, CAS latency 40, 1.1 V, ECC registered, and 2Rx8 organisation for each 32 GB module.

Does the 2 x 32 GB kit include any heat spreaders or extra cables, or must I buy them separately?

The modules ship without heat spreaders and no cables are included or required; the kit contains only the two 288-pin RDIMMs.

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