OWC 256GB (2x128GB) DDR5 4800 CL40 4Rx4 ECC Registered RDIMM Memory Upgrade Kit

Server DDR5 ECC RDIMM Kit

This 256GB kit contains two 128GB DDR5 4800 CL40 registered ECC modules built for HP ProLiant Gen11 servers including the DL325, DL345, DL360, DL365 and DL380. It is designed for workloads that require error-correcting registered memory in a 288-pin form factor. The modules operate at 1.1V and conform to JEDEC PC5-38400 standards. This kit will not work in standard desktop computers or with unbuffered or load-reduced DIMMs.

256GB Capacity For Dense Workloads

Two 128GB 4Rx4 modules deliver 256GB total capacity, suited for virtualisation, large databases and memory-intensive applications on supported Gen11 platforms. The registered buffer and ECC function maintain data integrity under sustained load. Systems that cannot address 4Rx4 registered DIMMs or that require unbuffered memory cannot use this kit. Mixing with other ranks or buffer types is not supported.

Registered 288-Pin Build

Each module is a registered 288-pin DDR5 RDIMM without a heat spreader, relying on server chassis airflow for cooling. The 1.1V operation matches the platform specification for Gen11 ProLiant systems. Installation follows standard DIMM slot population rules for the listed models. Builders needing unbuffered, load-reduced or non-ECC memory must select a different product.