M393A2K40BB1-CTD Samsung 16GB DDR4 ECC Registered Memory Module

Samsung M393A2K40BB1-CTD 16GB DDR4 Memory

The Samsung M393A2K40BB1-CTD is a high‑efficiency 16GB DDR4 Registered ECC memory module engineered to deliver stable, reliable, and fast performance for demanding server environments. Designed with advanced DDR4 SDRAM technology, it ensures smooth data handling, improved bandwidth, and exceptional durability for continuous workloads.

General Specifications

• Brand Name: Samsung
• Part Number: M393A2K40BB1-CTD
• Product Type: DDR4 Registered ECC Memory

Technical Specifications

• Total Capacity: 16GB
• Technology: DDR4 SDRAM
• Rank Structure: 1Rx4 (Single Rank)
• CAS Latency: CL19 for balanced speed and efficiency
• Cycle Time: 0.75ns for rapid data processing
• Frequency: 2666MHz for high‑performance throughput
• Bus Type: PC4‑21300 for improved data bandwidth
• Data Integrity: Registered ECC for error detection and correction

Physical Attributes

• Operating Voltage: 1.2V for reduced heat and power usage
• Pin Configuration: 288‑Pin DIMM layout
• Form Factor: Standard server‑grade DIMM

Compatibility

This Samsung 16GB ECC Registered DDR4 module is engineered for enterprise servers, data centers, virtualization systems, and mission‑critical applications requiring consistent uptime and dependable memory performance. Its ECC functionality ensures data accuracy, making it ideal for environments where stability is essential.

Samsung M393A2K40BB1-CTD DDR4 Memory

The Samsung M393A2K40BB1-CTD 16GB DDR4 server memory module represents a critical component within the enterprise and data center memory category, specifically designed for mission-critical workloads that demand stability, scalability, and predictable performance. This category encompasses ECC Registered DDR4 DIMMs optimized for server platforms, virtualization hosts, database servers, cloud infrastructure, and enterprise application environments. DDR4 SDRAM technology introduced significant improvements over earlier generations, including increased bandwidth, reduced power consumption, and higher module densities, all of which are essential for modern server architectures that operate continuously under heavy workloads. Within this category, Registered DIMMs (RDIMMs) play a vital role by incorporating a register between the DRAM modules and the memory controller, which helps reduce electrical load and enables greater memory capacity per system. The Samsung M393A2K40BB1-CTD exemplifies this design philosophy by supporting enterprise-grade stability, compatibility with leading server platforms, and long-term reliability expected in professional IT environments.

DDR4 SDRAM

DDR4 SDRAM marked a significant evolutionary step in server memory technology, bringing higher transfer rates and enhanced efficiency compared to DDR3. Operating at 2666MHz, this module fits squarely within the PC4-21300 performance class, delivering a data transfer rate capable of supporting memory-intensive workloads such as virtualization, in-memory databases, and real-time analytics. The increased frequency allows server CPUs to access data more rapidly, reducing latency bottlenecks and improving overall system responsiveness. The DDR4 architecture also supports higher bank group counts and improved prefetch mechanisms, enabling better parallelism and throughput. In the server memory category, these features are particularly valuable for multi-core processors that rely heavily on memory bandwidth to feed numerous simultaneous threads. The Samsung M393A2K40BB1-CTD aligns with these architectural enhancements, making it suitable for modern multi-socket server configurations.

PC4-21300

The PC4-21300 designation corresponds to a theoretical peak bandwidth of approximately 21.3GB/s per module, which is essential for enterprise workloads that continuously stream data between memory and processor caches. In server environments where multiple DIMMs operate in parallel across multiple memory channels, aggregate bandwidth can scale significantly, supporting high transaction rates and minimizing contention. This category of memory modules is therefore integral to performance tuning and capacity planning in professional data centers.

Data Integrity

Error Correcting Code (ECC) functionality is a defining characteristic of this server memory category. ECC memory modules like the Samsung M393A2K40BB1-CTD incorporate additional circuitry to detect and correct single-bit memory errors and detect multi-bit errors, significantly enhancing system reliability. In enterprise and data center environments, even minor memory errors can lead to application crashes, corrupted data, or system instability, making ECC a non-negotiable requirement. Registered ECC DIMMs further enhance data integrity by buffering command and address signals, which reduces electrical noise and signal degradation across the memory bus. This design is particularly important in systems populated with large numbers of DIMMs, where signal integrity challenges increase as memory capacity scales upward.

Importance of ECC

Server memory categories that emphasize ECC technology are commonly deployed in applications where uptime and accuracy are paramount. These include financial systems, healthcare databases, scientific simulations, enterprise resource planning platforms, and large-scale virtualization clusters. The Samsung M393A2K40BB1-CTD is positioned within this category to support continuous operation, safeguarding against silent data corruption and ensuring long-term system stability. ECC memory also plays a crucial role in regulatory compliance and data protection standards, where system reliability and error mitigation are mandated. By incorporating ECC Registered DDR4 technology, this category of memory modules helps organizations meet stringent operational requirements without compromising performance.

1Rx4 Memory

The 1Rx4 configuration indicates a single rank of memory using x4 DRAM chips, a common and efficient design within enterprise server memory categories. This configuration allows for improved error correction granularity and compatibility with a wide range of server platforms. Using x4 chips is particularly advantageous in ECC environments, as it enhances the effectiveness of error detection and correction mechanisms. Single-rank modules like this one can also contribute to better thermal characteristics and power efficiency, as they typically generate less heat compared to multi-rank configurations under certain workloads. In dense server deployments where airflow and cooling are critical considerations, this aspect of the category becomes especially important.

Capacity

The 16GB capacity places this module in a versatile position within the server memory category, suitable for both capacity expansion and balanced performance configurations. It allows system administrators to scale memory incrementally, optimizing total system capacity based on workload requirements and budget constraints. When deployed across multiple channels and sockets, 16GB RDIMMs can collectively deliver substantial memory pools suitable for enterprise virtualization and database workloads. This capacity tier is also ideal for maintaining optimal memory channel population, ensuring that server CPUs operate in their preferred configurations for maximum bandwidth utilization. The Samsung M393A2K40BB1-CTD supports such balanced architectures, making it a practical choice within this category.

Compatibility

As part of the DDR4 ECC Registered memory category, this module is designed to be compatible with a wide array of server motherboards from leading manufacturers. It adheres to JEDEC standards, ensuring predictable behavior and interoperability across platforms that support DDR4 RDIMM specifications. This standardization is essential in enterprise environments where hardware consistency and validated configurations are critical.

Power Efficiency

Operating at 1.2V, the Samsung M393A2K40BB1-CTD reflects the power efficiency improvements introduced with DDR4 technology. Lower operating voltage reduces overall system power consumption, which is a significant factor in data center operational costs. Within the server memory category, energy efficiency is increasingly important as organizations seek to optimize performance per watt.

Form Factor

The 288-pin DIMM form factor is the standard for DDR4 server memory, ensuring compatibility with modern server motherboards. This physical design supports high pin density for improved signal routing and power delivery. The Samsung M393A2K40BB1-CTD adheres to this standard, making integration straightforward in supported systems. Mechanical robustness and precise manufacturing tolerances are essential in enterprise memory categories, as modules are often installed and removed during system upgrades or maintenance. The design quality associated with Samsung server memory ensures reliable physical connections and long-term durability.