M386A8K40BM2-CTD Samsung Memory PC4-21300 64GB Ecc Registered DDR4 SDRAM

Highlights of Samsung M386A8K40BM2-CTD 64GB DDR4 ECC Ram

The Samsung M386A8K40BM2-CTD is a premium 64GB DDR4 memory module engineered for enterprise servers and data-intensive environments. Designed to deliver consistent performance, high reliability, and enhanced data integrity, this ECC Registered SDRAM module is ideal for mission-critical computing workloads.

General Information

• Manufacturer: Samsung
• Part Number: M386A8K40BM2-CTD
• Product Type: Server Memory Module
• Sub Type: DDR4 SDRAM ECC

Technical Specifications

• Total Memory Size: 64GB
• Module Count: 1 x 64GB
• Rank Design: 4Rx4
• Memory Speed: 2666MHz
• Bus Rate: 2666 MT/s
• Standard: DDR4-2666 / PC4-21300
• CAS Latency: CL19
• Error Correction: ECC (Error-Correcting Code)
• Signal Type: Registered (Buffered)
• Stability: Optimized for continuous operation

Physical Design

• Form Factor: 288-Pin LRDIMM
• Shipping Height: 1.00 inch
• Shipping Depth: 6.75 inches
• Shipping Weight: 0.20 lb

Compatibility

Supported Systems

• Enterprise rack and tower servers
• Data center and cloud infrastructure platforms
• High-performance workstation systems
• Virtualization and database servers

Processor Compatibility

• Intel Xeon Scalable and Xeon E5/E7 series processors
• AMD EPYC server processors
• Other enterprise CPUs supporting DDR4 LRDIMM memory

Overview of Samsung M386A8K40BM2-CTD DDR4 PC4-21300

This category encompasses DDR4 ECC Registered DIMMs that conform to JEDEC specifications and enterprise server standards. DDR4 technology introduced higher memory densities, improved bandwidth efficiency, and lower operating voltage compared to previous DDR3 generations. ECC Registered memory further enhances these benefits by adding error detection and correction alongside electrical buffering, enabling servers to scale memory capacity without compromising signal integrity.

Registered DIMM Architecture and Signal Integrity

Registered DIMMs integrate a register chip between the DRAM modules and the system memory controller. This design significantly reduces the electrical load presented to the controller, allowing more memory modules to be installed per channel. In enterprise servers with multiple DIMM slots per channel, RDIMMs are essential for maintaining stable communication at rated speeds. The category represented by the Samsung M386A8K40BM2-CTD prioritizes predictable performance and scalability over aggressive latency tuning, ensuring consistent operation under heavy, sustained workloads.

Error Correction Code for Enterprise Reliability

ECC functionality is a defining feature of this memory category. Error Correction Code technology automatically detects and corrects single-bit memory errors while identifying multi-bit errors that could compromise system stability. In enterprise environments where data integrity is critical, ECC memory significantly reduces the risk of silent data corruption. The Samsung M386A8K40BM2-CTD integrates ECC at the hardware level, making it suitable for applications such as database servers, virtualization hosts, and financial systems that demand uncompromising reliability.

High-Density 64GB Memory Capacity Classification

This category emphasizes high-density memory modules designed to maximize total system memory while minimizing physical slot usage. A single 64GB RDIMM allows servers to achieve large memory footprints with fewer modules, improving airflow, reducing power consumption per gigabyte, and simplifying system configuration. High-capacity memory is increasingly important as workloads shift toward virtualization, containerization, and in-memory processing, all of which rely heavily on available RAM resources.

Benefits of Large Memory Footprints in Modern Servers

Servers equipped with high-capacity memory can support a greater number of concurrent applications, virtual machines, or containers without performance degradation. The category represented by the Samsung M386A8K40BM2-CTD is well-suited for environments where memory contention is a limiting factor. By enabling higher consolidation ratios, these memory modules help organizations optimize hardware utilization and reduce infrastructure costs.

Reduced Slot Population and Thermal Advantages

Using fewer high-capacity DIMMs instead of many lower-capacity modules can improve system thermals and airflow. This category supports efficient cooling strategies within dense server chassis. Lower DIMM counts also simplify maintenance and reduce potential points of failure, contributing to overall system reliability and uptime.

DDR4 2666MHz Speed and PC4-21300 Bandwidth

The DDR4 2666MHz speed rating places this category within a widely supported performance tier for enterprise servers. PC4-21300 denotes a theoretical maximum bandwidth of approximately 21.3 GB/s per module, providing sufficient throughput for a broad range of enterprise workloads. This speed is supported across multiple generations of Intel Xeon and AMD EPYC processors, making it a versatile choice for both new deployments and upgrades of existing systems.

Balanced Performance for Enterprise Workloads

Rather than focusing on peak benchmark performance, this category emphasizes consistent and predictable memory throughput. DDR4 2666MHz strikes a balance between speed and stability, ensuring compatibility with a wide range of server platforms. The Samsung M386A8K40BM2-CTD operates within JEDEC-standard timings, reducing the risk of compatibility issues and ensuring reliable operation under continuous load.

CL19 Latency Characteristics

CAS Latency 19 reflects a conservative timing profile optimized for stability rather than extreme responsiveness. In server environments, predictable latency is often more important than minimal latency. This category prioritizes error-free operation and long-term reliability, making CL19 an appropriate choice for enterprise systems that must remain stable under sustained workloads.

288-Pin DDR4 RDIMM Form Factor Standards

This category adheres to the 288-pin DDR4 DIMM form factor, which is the standard for modern server memory. The physical design ensures compatibility with enterprise server motherboards while preventing incorrect installation in consumer systems. The 288-pin layout supports improved electrical signaling and power delivery, contributing to overall system stability.

Thermal Stability and Long-Term Operation

Enterprise memory modules must withstand sustained thermal loads without degradation. This category is designed with thermal stability in mind, ensuring reliable performance even in densely populated server environments. Samsung’s manufacturing processes include extensive thermal testing to validate long-term reliability.

Samsung DRAM Manufacturing Expertise

Samsung is a global leader in semiconductor manufacturing, and this category reflects decades of DRAM innovation and quality control. The Samsung M386A8K40BM2-CTD is built using Samsung-manufactured DRAM chips, ensuring tight integration and consistent quality. Vertical integration allows Samsung to control every stage of production, from wafer fabrication to final module assembly.

JEDEC Compliance and Industry Standards

This category strictly follows JEDEC standards, ensuring broad compatibility across enterprise platforms. JEDEC compliance guarantees standardized electrical characteristics, timings, and form factors, making integration into supported systems straightforward. For system integrators and IT professionals, this reduces deployment complexity and minimizes compatibility risks.

Rigorous Validation and Quality Assurance

Memory modules in this category undergo extensive validation and testing processes. These include stress testing under sustained workloads, compatibility testing with major server platforms, and verification of ECC functionality. This rigorous approach ensures that the Samsung M386A8K40BM2-CTD meets enterprise reliability expectations.

Enterprise and Data Center Use Cases

This category is designed to support a wide range of enterprise and data center applications. From virtualization and cloud computing to database management and analytics, high-capacity ECC Registered memory is a foundational component of modern IT infrastructure. The Samsung M386A8K40BM2-CTD fits seamlessly into environments where uptime and data integrity are critical.

Hypervisor Platforms

Virtualization platforms rely heavily on available memory to allocate resources dynamically. This category enables higher virtual machine density per host, improving overall infrastructure efficiency. ECC Registered memory ensures that virtualized workloads operate reliably without unexpected crashes or data corruption.

Database and Transaction Processing Systems

Database servers benefit significantly from large memory pools for caching and query execution. This category supports transactional and analytical databases by reducing disk I/O and improving response times. High-capacity memory also enables more data to be processed in memory, enhancing performance for complex queries.

Cloud Infrastructure and Service Providers

Cloud service providers require memory solutions that can scale reliably across large fleets of servers. This category offers consistency, compatibility, and long-term availability, making it suitable for standardized deployments. The Samsung M386A8K40BM2-CTD supports predictable performance across diverse workloads.

Professional Workstation and Specialized Applications

While primarily designed for servers, this category is also applicable to enterprise-grade workstations that support ECC Registered memory. Professional applications such as engineering simulations, scientific research, and media rendering benefit from the stability and capacity provided by high-density RDIMMs.

Scientific Computing and Research Environments

Scientific workloads often involve large datasets and long computation times. This category supports these requirements by providing ample memory capacity and robust error correction. The reliability of ECC memory reduces the risk of computation errors that could invalidate research results.

Media Processing

Professional content creation workflows can place significant demands on system memory. This category ensures stable operation during long rendering or encoding sessions, minimizing the risk of crashes or data loss.

Platform Deployment Considerations

This category is intended for systems that explicitly support DDR4 ECC Registered memory. Compatibility depends on the server motherboard chipset and processor memory controller. The Samsung M386A8K40BM2-CTD is commonly deployed in enterprise servers from major OEMs as well as custom-built systems that adhere to server memory specifications.

Multi-Channel and Multi-Socket Architectures

Modern server platforms utilize multi-channel and multi-socket memory architectures to maximize bandwidth. This category is optimized for such configurations, ensuring balanced memory population and consistent performance across channels. Proper installation according to platform guidelines is essential for achieving optimal results.

Upgrade and Expansion Strategies

High-capacity DDR4 memory allows organizations to scale their infrastructure incrementally. This category supports gradual upgrades by enabling additional modules to be installed as workloads grow. The long-term relevance of DDR4 ensures compatibility with existing platforms for years to come.

Consistency, Availability, and Enterprise Confidence

Consistency and availability are critical factors in enterprise memory selection. This category offers standardized specifications, predictable performance, and long-term availability, enabling organizations to deploy and maintain systems with confidence. The Samsung M386A8K40BM2-CTD represents a mature and reliable choice within the high-capacity DDR4 ECC Registered memory segment.