M386AAG40AM3-CWELY Samsung DDR4 3200MBPS ECC Memory Module 128GB

Highlights of Samsung M386AAG40AM3-CWELY 128GB DDR4 Ram

The Samsung M386AAG40AM3-CWELY is a high-capacity 128GB DDR4 memory module tailored for enterprise servers, data centers, and high-performance computing environments. Designed for exceptional reliability and efficiency, this ECC Registered LRDIMM module ensures consistent performance for mission-critical workloads.

General Information

• Manufacturer: Samsung
• Part Number: M386AAG40AM3-CWELY
• Product Type: Server Memory Module
• Sub Type: DDR4 SDRAM

Technical Specifications

• Total Memory Size: 128GB
• Number of Modules: 1 x 128GB
• Rank Structure: Quad Rank x4 (4Rx4)
• Memory Speed: 3200MBPS
• Bus Rate: DDR4-3200
• Industry Standard: PC4-25600
• CAS Latency: CL22
• Error Checking: ECC (Error-Correcting Code)
• Signal Processing: Registered (Buffered)
• Operational Stability: Optimized for continuous server workloads

Physical Design and Form Factor

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

Compatibility

Supported Server Environments

• Enterprise rack and tower servers
• Data center and cloud computing infrastructure
• Virtualization and database server platforms
• High-performance computing (HPC) systems

Processor Compatibility

• Intel Xeon Scalable processors
• Intel Xeon E5 and E7 series CPUs
• AMD EPYC server processors
• Other enterprise processors with DDR4 LRDIMM support

Overview of Samsung M386AAG40AM3-CWELY DDR4 PC4-25600

The Samsung M386AAG40AM3-CWELY exemplifies this category by offering 128GB per module, ideal for multi-terabyte deployments in modern server infrastructures. This category includes DDR4 Load-Reduced DIMMs that are optimized for large-scale server environments where high capacity and reliability are essential. LRDIMM modules incorporate a memory buffer that reduces the electrical load on the CPU’s memory controller, allowing for greater scalability compared to traditional RDIMMs. By isolating the memory controller from the DRAM load, LRDIMM technology ensures stable operation at high capacities, enabling enterprise systems to reach memory configurations that were previously unattainable.

Load-Reduced Architecture for Enhanced Scalability

The Samsung M386AAG40AM3-CWELY provides full support for these high-density environments, ensuring consistent operation even in heavily loaded systems. Load-Reduced DIMMs employ a buffer that handles both command and data signals, reducing the electrical stress on the memory controller. This architecture allows servers to populate all available memory slots with high-capacity modules without compromising signal integrity or system stability. This category focuses on modules that deliver predictable performance under maximum load, making them suitable for enterprise platforms that require large, balanced memory configurations across multiple channels and sockets.

Error Correction Code for Mission-Critical Reliability

ECC memory is a defining feature of this category, providing continuous error detection and correction to maintain data integrity. Single-bit errors are corrected automatically, while multi-bit errors are identified and flagged to prevent data corruption. In enterprise and cloud computing environments, ECC ensures that critical workloads such as virtualization, databases, and in-memory computing platforms remain accurate and stable. The Samsung M386AAG40AM3-CWELY integrates ECC at the module level, providing robust protection against memory errors and enhancing the overall reliability of enterprise systems.

128GB High-Density Memory Capacity

This category is defined by ultra-high-density memory modules that significantly increase total system memory capacity. A 128GB LRDIMM allows enterprise servers to reach multi-terabyte memory configurations while minimizing the number of DIMMs required. High-density memory is essential for applications that demand large in-memory datasets, including artificial intelligence, big data analytics, and virtualization, where capacity directly affects performance and scalability.

Multi-Terabyte Server Configurations

With 128GB per module, servers can achieve multi-terabyte configurations across all memory slots. This category supports enterprise platforms designed to handle large-scale workloads efficiently. Fewer modules are needed to reach desired capacities, which simplifies system design, reduces potential points of failure, and enhances airflow for optimal cooling performance.

DDR4 3200MBPS Performance and PC4-25600 Bandwidth

The DDR4 3200MBPS frequency places this memory category in the high-performance tier of DDR4 enterprise modules. The PC4-25600 rating indicates a theoretical maximum bandwidth of 25.6 GB/s per module, providing substantial throughput for memory-intensive workloads. This category is optimized for enterprise platforms and modern server processors that require high-frequency memory operation to sustain performance in data-intensive applications.

High Bandwidth for Memory-Intensive Applications

Applications such as AI model training, large-scale simulations, real-time analytics, and enterprise databases benefit from the increased memory bandwidth offered by this category. DDR4 3200MBPS modules provide faster access to data, reducing latency and enhancing overall system responsiveness. The Samsung M386AAG40AM3-CWELY is engineered to maintain consistent high-speed operation under sustained workloads, ensuring reliable performance in demanding enterprise environments.

CL22 Latency for Stability

The CAS Latency of 22 in this category represents a balance between performance and stability. Enterprise servers often prioritize predictable latency and compatibility over aggressive speed tuning. This category ensures that timing characteristics remain stable under heavy loads, supporting consistent operation across multiple server platforms and minimizing the risk of memory-related errors or instability.

4Rx4 Memory Organization for Optimal

The 4Rx4 configuration denotes a quad-rank module with x4 DRAM chips, which is essential for achieving ultra-high capacities such as 128GB per DIMM. Quad-rank modules allow memory controllers to utilize rank interleaving, which improves efficiency and throughput by accessing multiple ranks in parallel. This category is designed to deliver high-density memory without compromising performance or reliability.

Rank Interleaving Benefits

Multiple ranks in a 4Rx4 configuration enable the memory controller to alternate access across ranks, reducing idle cycles and increasing effective memory throughput. This category leverages quad-rank design to enhance performance in multi-channel server architectures. The Samsung M386AAG40AM3-CWELY ensures that rank-level parallelism is fully utilized, providing efficient memory access for complex workloads.

Quad-Rank Modules

Despite their high capacity, quad-rank LRDIMM modules are engineered for efficient power consumption and thermal stability. This category ensures that modules operate reliably under high-density deployment conditions, minimizing heat generation while maintaining consistent voltage levels. Effective thermal management is critical for continuous operation in data centers and high-performance computing environments.

288-Pin DDR4 LRDIMM Form Factor

Modules in this category conform to the 288-pin DDR4 DIMM standard, which ensures mechanical and electrical compatibility with enterprise-grade servers. The standardized form factor supports proper installation, robust signal integrity, and reliable power delivery. Adhering to this standard prevents accidental use in incompatible consumer systems and ensures consistent performance across supported server platforms. Enterprise memory must sustain performance under prolonged thermal stress. This category undergoes rigorous thermal validation to ensure long-term durability, even in high-density memory deployments. Samsung’s manufacturing standards guarantee that each module can operate reliably 24/7 without performance degradation.

Samsung Semiconductor Manufacturing Excellence

Samsung is a globally recognized leader in semiconductor manufacturing, and this category benefits from the company’s advanced DRAM production capabilities. The Samsung M386AAG40AM3-CWELY is built using Samsung-manufactured DRAM components, ensuring high quality, consistency, and availability. Vertical integration enables Samsung to control every stage of production, from wafer fabrication to final module assembly and testing.

JEDEC Compliance and Enterprise

This category strictly adheres to JEDEC standards, ensuring broad compatibility across server platforms. JEDEC compliance standardizes timings, voltages, and electrical characteristics, facilitating seamless integration into enterprise systems and reducing the risk of compatibility issues during deployment or upgrades.

Validation, Testing, and Quality Assurance

Memory modules in this category undergo comprehensive validation processes, including stress testing, platform compatibility testing, and ECC verification. These rigorous procedures ensure that the Samsung M386AAG40AM3-CWELY meets the high reliability expectations of data centers, cloud computing platforms, and enterprise servers.

Enterprise and Data Center Applications

This category is designed to support mission-critical workloads in enterprise, cloud, and high-performance computing environments. Ultra-high-capacity LRDIMM memory enables scalability, efficiency, and reliability across a wide range of applications. Virtualized environments require large memory pools to allocate resources efficiently across multiple virtual machines. This category enables higher VM density per host while maintaining stable performance. ECC and load-reduced design ensure reliable operation in multi-tenant and cloud-based infrastructures.

In-Memory Databases and Analytics

High-capacity LRDIMM memory supports in-memory databases and real-time analytics, enabling rapid data access and processing. This category provides the capacity and bandwidth necessary for large datasets, supporting applications such as business intelligence, financial modeling, and high-speed transaction processing.

Computing and Research Applications

Scientific computing and research workloads often require large contiguous memory spaces and sustained throughput. This category supports simulations, modeling, and data analysis tasks that depend on high-capacity memory configurations for optimal performance.

Engineering, Simulation, and Modeling Workloads

Applications such as finite element analysis, computational fluid dynamics, and weather modeling demand substantial memory resources. This category provides stable, high-density memory configurations capable of handling large-scale computations without errors or interruptions. Research institutions require memory solutions that can operate reliably over long computational periods. This category supports extensive research tasks, including large dataset processing and long-running simulations, while maintaining consistent performance and data integrity.

Platform Deployment Strategy

This category is intended for server platforms that explicitly support DDR4 LRDIMM memory. Compatibility depends on processor memory controller capabilities, motherboard architecture, and firmware support. The Samsung M386AAG40AM3-CWELY is deployed in enterprise servers from leading OEMs and in custom-built platforms designed for maximum memory density.

Multi-Socket and Multi-Channel

Modern servers employ multi-socket and multi-channel architectures to maximize memory bandwidth. This category ensures balanced population across all channels, supporting consistent performance and optimal resource utilization. High-capacity LRDIMM memory allows organizations to plan for future workload growth without immediate platform replacement. This category supports incremental upgrades, providing flexibility for expanding memory capacity as business needs evolve.

Standardization, Availability, and Infrastructure Confidence

Consistency, long-term availability, and standardized specifications are critical in enterprise deployments. This category provides confidence to IT administrators and decision-makers, offering predictable performance, stable production lifecycles, and compatibility across supported platforms. The Samsung M386AAG40AM3-CWELY is a reliable choice for high-capacity memory deployments in mission-critical environments.