OWC 512GB (4×128GB) DDR5 4800 PC5-38400 CL40 4Rx4 288-pin 1.1V ECC RDIMM Kit

OWC 512GB DDR5 ECC RDIMM Kit

This kit delivers 512GB of DDR5 4800 registered ECC memory across four 128GB modules. It targets administrators upgrading Lenovo ThinkSystem SR635 V3, SR645 V3, SR650 V3, SR655 V3 and SR665 V3 servers. The modules operate at 1.1V with CL40 latency and a 4Rx4 organisation. They are not compatible with standard desktop computers or unbuffered memory configurations.

Capacity and headroom for virtualisation

Four 128GB modules fill four slots to reach 512GB, supporting dense virtualisation, large databases and in-memory analytics. The registered design and ECC protect data integrity under sustained load. Systems requiring more than 512GB or a different rank configuration cannot use this kit. Mixing with load-reduced or unbuffered DIMMs is not supported.

JEDEC compliance and warranty-safe upgrade

The modules meet JEDEC PC5-38400 specifications and are ROHS compliant, ensuring a warranty-safe installation. OWC validates each module in-house and backs the kit with a limited lifetime warranty and an advanced replacement programme. No additional software or accessories are bundled; the value is in the validated compatibility and the replacement service.