M393A2K40CB2-CTD Samsung 1x16GB DDR4 RDIMM ECC RAM

High-Density DDR4 Registered ECC RDIMM Memory Expansion with the M393A2K40CB2-CTD

The M393A2K40CB2-CTD is a Samsung 16GB DDR4 Registered ECC RDIMM designed to extend capacity and maintain signal integrity in mainstream enterprise server platforms. By using registered buffering and 72-bit ECC, the module supports stable operation under multi-DIMM population, helping CPU memory controllers sustain predictable performance in virtualized and general compute environments.

Implemented as a 288-pin, low-profile RDIMM running at DDR4-2666 (PC4-21300R) and 1.2V, the M393A2K40CB2-CTD aligns well with Intel Xeon and AMD EPYC DDR4 generations where bandwidth, latency, and reliability must remain consistent across NUMA nodes. The single-rank x4 organization is optimized for server-class RAS characteristics, while CL19 timings provide balanced responsiveness for mixed workloads. This makes the M393A2K40CB2-CTD a practical choice for expanding memory footprints without altering PCIe lane allocations, storage backplanes, or existing expansion plans.

Why Choose the M393A2K40CB2-CTD?

The M393A2K40CB2-CTD delivers a controlled path to higher memory density with enterprise-grade error correction and registered signaling that supports scalable DIMM configurations. For IT teams standardizing on DDR4-2666 RDIMMs, the M393A2K40CB2-CTD provides dependable interoperability as an OEM/replacement module and helps reduce risk during maintenance windows, node refreshes, or capacity normalization across clusters.

Samsung designs server memory with a focus on long-term stability, consistent binning, and compliance with data center operational requirements. The M393A2K40CB2-CTD follows this engineering approach to support sustained uptime, predictable thermal behavior, and compatibility expectations for DDR4 RDIMM platforms in enterprise racks.

Key Applications:

• Virtualization hosts
• General compute servers
• Database and application servers
• VDI infrastructure

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your needs for the M393A2K40CB2-CTD and related DDR4 RDIMM rollouts, enabling clean standardization across fleets. For multi-node upgrades, Bulk Order Discount options support cost-efficient capacity expansion without compromising on platform consistency.