OWC 5R6D54R4128G 128GB DDR5 5600 CL46 4Rx4 ECC Registered RDIMM memory upgrade

Server-grade DDR5 ECC module

This 128GB registered DIMM targets Supermicro SuperServer platforms such as the SSG-121E-NE316R, SSG-121E-NES24R, SSG-221E-NE324R, SYS-111C-NR and SYS-111E-FDWTR. It is built for workloads that require error-correcting memory in workstations, NAS systems, servers and network switches. Standard desktop boards cannot use this module.

128GB single-stick capacity at 5600 MT/s

The module runs at DDR5 5600 (PC5-44800) with a CAS latency of 46 and operates at 1.1V. A single stick delivers 128GB, so maximum system memory depends on the number of slots the server provides. Workloads exceeding that total will need additional DIMMs or a platform with more channels.

288-pin registered design without heat spreader

The 4Rx4 registered layout adds a buffer that stabilises signals in dense configurations, but it cannot be mixed with unbuffered or load-reduced ECC memory. JEDEC and RoHS compliance ensures a warranty-safe upgrade. The bare PCB fits standard 288-pin DDR5 slots, leaving cooling to the chassis airflow.