M386A8K40BM2-CTD Samsung 64GB DDR4 SDRAM 2666MHZ PC4-21300 Ecc RAM

Highlights of Samsung M386A8K40BM2-CTD 64GB DDR4 ECC Ram

The Samsung M386A8K40BM2-CTD is a high-performance 64GB DDR4 server memory module designed for enterprise-grade systems, data centers, and workstation environments. Built for stability, reliability, and consistent performance, this module is ideal for servers that demand error correction and registered signal processing.

General Information

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

Technical Specifications

• Total Capacity: 64GB
• Module Layout: 1 x 64GB
• Rank Structure: 4Rx4
• Memory Speed: 2666MHz
• Data Rate: DDR4-2666 / PC4-21300
• Bus Speed: 2666 MT/s
• CAS Latency: CL19
• Error Checking: ECC (Error-Correcting Code)
• Signal Type: Registered (Buffered)
• Stability: Enhanced reliability for 24/7 server operations
• Form Factor: 288-Pin LRDIMM

Physical Design and Form Factor

• Height: 1.00 inch
• Depth: 6.75 inches
• 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

Overview of Samsung M386A8K40BM2-CTD DDR4 PC4-21300

This category encompasses DDR4 ECC Registered memory modules that adhere strictly to JEDEC standards for server memory. The Samsung M386A8K40BM2-CTD belongs to a class of RDIMM modules designed to offload electrical load from the memory controller through the use of a register between the DRAM chips and the memory controller. This architectural approach improves signal integrity, enabling systems to scale to higher memory capacities while maintaining consistent performance and operational stability. DDR4 technology itself introduces higher density memory chips, improved power efficiency, and increased bandwidth compared to DDR3, making it suitable for modern multi-core server processors.

Registered DIMM Design for Scalability

Registered DIMMs, often referred to as RDIMMs, play a critical role in enterprise servers by allowing a greater number of memory modules to be installed per system. The register acts as a buffer, reducing the electrical stress on the memory controller. This enables server platforms to populate all available DIMM slots without compromising stability. The Samsung M386A8K40BM2-CTD 64GB module fits seamlessly into this category, offering a balance of capacity and compatibility for servers that demand large memory footprints.

Code for Data Integrity

ECC functionality is a defining feature of this category. ECC memory continuously detects and corrects single-bit memory errors and identifies multi-bit errors, significantly reducing the risk of data corruption. In enterprise environments where uptime and data accuracy are paramount, ECC Registered memory is essential. The inclusion of ECC in the Samsung M386A8K40BM2-CTD ensures that applications such as financial systems, virtualization hosts, scientific computing platforms, and enterprise databases operate with maximum reliability.

64GB High-Density Memory Capacity

This category emphasizes high-capacity memory modules designed to support demanding workloads. A single 64GB module provides substantial memory density, allowing servers to reach hundreds of gigabytes or even terabytes of total system memory depending on platform support. High-density modules reduce the total number of DIMMs required, improving airflow, reducing power consumption per gigabyte, and simplifying memory configuration strategies in large-scale deployments.

Cloud Computing

Virtualization platforms rely heavily on available system memory to allocate resources efficiently across multiple virtual machines. The Samsung M386A8K40BM2-CTD falls into a category optimized for hypervisors and cloud workloads, where memory oversubscription and dynamic allocation are common. High-capacity RDIMMs enable higher VM density per host, improving infrastructure utilization while maintaining predictable performance.

In-Memory Databases and Analytics

In-memory databases and real-time analytics platforms demand large, fast, and reliable memory pools. This category of DDR4 ECC Registered memory supports such use cases by offering consistent bandwidth at 2666MHz and robust error correction. Applications that process large datasets in memory benefit from reduced latency and enhanced stability, ensuring accurate analytical results and uninterrupted service.

DDR4 2666MHz Performance Characteristics

Operating at 2666MHz, also known as PC4-21300, this category of memory delivers a balanced combination of bandwidth and efficiency. DDR4 2666MHz is widely supported across multiple generations of enterprise processors, including Intel Xeon Scalable and AMD EPYC platforms. The standardized frequency ensures broad compatibility and predictable performance across diverse server configurations.

PC4-21300 Bandwidth

The PC4-21300 specification indicates a theoretical maximum bandwidth of approximately 21.3 GB/s per module. In multi-channel server architectures, this bandwidth scales linearly, enabling high-throughput memory access for data-intensive workloads. This category is designed for environments where sustained throughput and consistent latency are more critical than peak overclocked performance.

CL19 Latency

CAS Latency 19 represents a carefully selected timing parameter that balances speed, stability, and compatibility. In server environments, slightly higher latency values are often preferred to ensure consistent operation under continuous load. The CL19 timing of the Samsung M386A8K40BM2-CTD aligns with JEDEC standards, ensuring reliable interoperability with supported server motherboards and processors.

288-Pin DIMM Form Factor

This category strictly adheres to the 288-pin DDR4 DIMM form factor, which is standard for modern server memory. The physical design ensures compatibility with enterprise-grade motherboards while preventing installation in incompatible consumer slots. The 288-pin layout also supports improved signal routing and power delivery, contributing to the overall stability of the memory subsystem.

Voltage and Power

DDR4 memory operates at a nominal voltage of 1.2V, offering improved power efficiency compared to previous generations. This category benefits data centers by reducing overall power consumption and heat output, which in turn lowers cooling requirements. The Samsung M386A8K40BM2-CTD is designed for continuous operation within strict thermal and electrical tolerances.

Thermal Stability for 24/7 Operation

Enterprise servers often operate around the clock under varying workloads. This category of memory modules is engineered to maintain stability across extended operational periods. Samsung’s rigorous validation and testing processes ensure that each module meets enterprise reliability standards, even under sustained thermal stress.

Samsung DRAM Manufacturing and Quality Assurance

Samsung is recognized globally as a leader in semiconductor manufacturing, and this category reflects that expertise. The Samsung M386A8K40BM2-CTD utilizes high-quality DRAM chips produced in Samsung’s advanced fabrication facilities. Vertical integration allows Samsung to control every aspect of the manufacturing process, from wafer fabrication to final module assembly.

Strict JEDEC

This category adheres strictly to JEDEC specifications, ensuring compatibility across a wide range of enterprise platforms. JEDEC compliance guarantees standardized timings, voltages, and electrical characteristics, minimizing the risk of interoperability issues. For system integrators and IT administrators, this standardization simplifies deployment and maintenance.

Comprehensive Validation and Testing

Each memory module in this category undergoes extensive testing to verify performance, stability, and reliability. Validation includes compatibility testing with major server platforms, stress testing under sustained workloads, and error detection verification for ECC functionality. This rigorous approach ensures that the Samsung M386A8K40BM2-CTD meets the expectations of enterprise environments.

Use Cases Across Enterprise and Professional Environments

This category is designed to serve a wide range of professional applications. From corporate data centers to research institutions, the Samsung M386A8K40BM2-CTD fits into systems where memory reliability and capacity are critical. Enterprise resource planning systems, customer relationship management platforms, and large-scale content delivery networks all benefit from high-capacity ECC Registered memory.

Database Servers and Transactional Systems

Transactional databases rely heavily on memory for caching and query execution. This category supports such systems by providing consistent performance and robust error correction. High memory capacity reduces disk I/O dependency, improving transaction throughput and reducing response times.

Computing and Scientific Workloads

Scientific simulations, modeling, and research applications often require large contiguous memory spaces. The Samsung M386A8K40BM2-CTD category addresses these needs by delivering high-density modules that support large datasets and parallel processing workloads.

Enterprise Workstations and Professional Applications

In addition to servers, this category is suitable for enterprise-grade workstations used in engineering, media production, and data analysis. Workstations that support ECC Registered memory benefit from improved stability during long rendering sessions, simulations, or complex computational tasks.

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 and in custom-built systems that adhere to server memory specifications.

Multi-Channel Memory Architectures

Modern server processors utilize multi-channel memory architectures to maximize bandwidth. This category of memory is optimized for such configurations, ensuring balanced channel population and consistent performance. Proper memory population guidelines should be followed to achieve optimal results.

Future-Proofing Enterprise Infrastructure

High-capacity DDR4 memory remains relevant across multiple hardware generations. This category allows organizations to extend the lifespan of their server infrastructure while maintaining compatibility with widely supported DDR4 platforms. The investment in 64GB RDIMM modules supports future workload growth without immediate platform upgrades.