Samsung M386AAG40AM2-CTD 128GB DDR4-2666 ECC LRDIMM Server Memory

Overview

M386AAG40AM2-CTD is a Samsung 128GB DDR4 ECC Load-Reduced DIMM (LRDIMM) rated at 2666 MT/s. It is intended for compatible server-class systems that explicitly support DDR4 LRDIMM memory.

Product Positioning

This module is relevant for memory-dense DDR4 servers where 128GB LRDIMMs are used to increase capacity per populated slot. LRDIMM architecture is used in high-capacity server configurations to reduce the electrical load presented to the memory controller. It should be selected as a qualified server module rather than treated as generic DDR4 RAM.

Basic Technical Information

Typical Application Areas

• Enterprise and data-center servers
• Virtualization and private-cloud hosts
• Database and storage systems
• High-memory-capacity compute platforms
• Server repair, expansion and long-life maintenance

Selection Notes

DDR4 LRDIMM is not interchangeable with standard DDR4 RDIMM or UDIMM simply because the modules share the same DDR generation. Before ordering M386AAG40AM2-CTD, verify that the target server supports LRDIMM, then check supported capacity, data rate, rank organization and DIMM population rules. Exact manufacturer part-number matching is the safest starting point for installed enterprise systems.

Replacement and Sourcing Considerations

If the exact module is unavailable, compare DDR generation, LRDIMM architecture, capacity, supported speed and the server vendor's memory qualification requirements before considering an alternative. Similar capacity and speed alone do not establish compatibility.

RFQ & Sourcing Support

Contact SMC with the required part number, quantity, target price and server platform. We can check stock, suffix availability and technically relevant Samsung, SK hynix or Micron DDR4 LRDIMM sourcing options for maintenance, production and shortage projects.