4X77A81443-AX Axiom 128GB PC5-38400 DDR5-4800MHz ECC Registered CL40 288-Pin Memory Module

4X77A81443-AX Overview

The Axiom 4X77A81443-AX is a 128GB DDR5-4800MHz ECC Registered DIMM (RDIMM) built for Lenovo ThinkSystem servers and other enterprise-grade platforms requiring extreme memory density and rock-solid stability. Operating at PC5-38400 speeds (4800MT/s), it delivers the high bandwidth needed for virtualization clusters, in-memory databases, AI/ML workloads, and HPC environments.Featuring a quad-rank design, this module enables large memory footprints and maximizes channel efficiency in multi-DIMM server configurations. Its CL40 CAS latency ensures consistent, low-latency performance for demanding parallel workloads and memory-intensive applications.With ECC (Error-Correcting Code) support, it automatically detects and corrects single-bit memory errors, helping protect against data corruption and reducing downtime.