M393AAG40M32-CAE

• 128 GB DDR4 Registered DIMM (RDIMM)
• Data Rate 3200 MT/S at a 1600 MHz Base and 3200 MHz Clock Speed
• Quad-Rank 4R X 4 organisation, (8G X 4) X 36 Component Composition Including ECC Devices
• 288-Pin DDR4 DIMM Edge Connector
• 1.2 V Module Supply Voltage
• Samsung M-Die Revision components, ECCN EAR99

The Samsung M393AAG40M32-CAE is a 128 GB DDR4 RDIMM rated at 3200 MT/s, built as a 4Rx4 quad-rank module on a 288-pin edge connector. It uses M-die components in an (8G x 4) x 36 composition, with the 36-device count including the additional DRAM required for ECC protection. The module operates at 1.2 V, the DDR4 standard supply. Quad-rank construction is how DDR4 platforms reach this capacity per slot.

128 GB RDIMMs are used to build high-capacity DDR4 servers where the goal is maximum memory per socket: in-memory databases, large virtualisation hosts, analytics nodes, and memory-bound HPC and simulation workloads. Typical users include enterprise data centre teams, cloud operators, and integrators specifying or expanding DDR4-generation platforms. Quad-rank modules place a heavier load on the memory controller than dual-rank parts, so platform documentation should be checked for how many quad-rank DIMMs each channel supports and whether populating them reduces the achievable data rate.