OWC 256GB (4x64GB) DDR5 4800 CL40 ECC Registered RDIMM memory upgrade for PowerEdge R760xd2

Server-grade DDR5 kit

This OWC kit provides 256GB of DDR5 4800 ECC registered memory in four 64GB modules. It is built for the Dell PowerEdge R760xd2 server platform. The modules use a 288-pin RDIMM form factor with 2Rx4 organisation and operate at 1.1V. This memory is intended for workstation, server and NAS environments that require error correction and registered buffering.

Verify registered ECC requirement

Before ordering, confirm your system requires DDR5 ECC registered RDIMMs and not unbuffered or load-reduced variants. The PowerEdge R760xd2 must support 2Rx4 modules at DDR5 4800 with CL40 timing. Mixing this kit with non-registered or non-ECC memory will prevent operation. Check the server documentation for approved population rules and maximum capacity per channel.

Four-module population

The kit fills four DIMM slots with matched 64GB modules, leaving remaining slots available for future expansion if the platform allows. Registered buffering reduces electrical load on the memory controller, helping stability in dense configurations. No heat spreaders are fitted, so ensure adequate chassis airflow over the modules. This upgrade replaces Dell part numbers AC239379 and SNPJ52K5C/64G.