Samsung M393AAG40M32-CAEBY is a 128GB DDR4 3200MHz ECC Registered DIMM (RDIMM) server memory module built for enterprise and data center environments. Featuring a 2S2Rx4 3D stacked die configuration and PC4-3200AA performance class, it delivers high memory density, strong stability, and reliable error correction for mission-critical workloads.

Pulled from working systems and tested and working.

Key Features

• Model: Samsung M393AAG40M32-CAEBY — 128GB DDR4 3200MHz (PC4-3200AA) ECC RDIMM
• High Density Support: The 3D stacked die (3DS) architecture with 2S2Rx4 configuration enables systems to support maximum memory capacity in a single 288-pin RDIMM slot, ideal for high-density enterprise deployments.
• Data Integrity: Integrated Registered ECC (Error-Correcting Code) functionality helps detect and correct memory errors in real time, ensuring improved system reliability and uptime for mission-critical workloads in data center environments.
• Enterprise-Grade Design: Engineered specifically for server and workstation platforms requiring dependable high-capacity memory. Not compatible with consumer desktops or laptops due to RDIMM architecture and ECC requirements.
• Compatibility: Supports enterprise platforms using standard 288-pin DDR4 RDIMM memory slots, including Dell PowerEdge, HPE ProLiant, Cisco UCS, and Supermicro server systems that specifically support 128GB quad-rank 3DS RDIMM modules. Support for lower-capacity RDIMMs does not guarantee support for this module — verify against your platform's memory QVL.
• Note: You cannot mix RDIMMs with LRDIMMs or UDIMMs in the same system — ensure all installed modules are of the same type.