M386AAG40AM3-CWEZY Samsung 128GB 3200MBPS DDR4 SDRAM 288-Pin Ram

Highlights of Samsung M386AAG40AM3-CWEZY 128GB DDR4 Ram

The Samsung M386AAG40AM3-CWEZY is a high-performance 128GB DDR4 memory module designed for enterprise servers, data centers, and mission-critical computing environments. Equipped with ECC Registered technology, this LRDIMM module ensures reliable operation, high-speed performance, and data integrity for intensive workloads.

General Information

• Manufacturer: Samsung
• Part Number: M386AAG40AM3-CWEZY
• Product Type: Server Memory Module
• Sub Type: DDR4 SDRAM PC4-25600

Technical Specifications

• Total Memory Capacity: 128GB
• Module Quantity: 1 x 128GB
• Rank Design: Quad Rank x4 (4Rx4)
• Memory Speed: 3200MBPS
• Bus Speed: DDR4-3200
• Industry Standard: PC4-25600
• CAS Latency: CL22
• Error Correction: ECC (Error-Correcting Code)
• Signal Processing: Registered (Buffered)
• Operational Stability: Designed for 24/7 enterprise 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 Platforms

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

Motherboard and Memory Slot Requirements

• DDR4-enabled server motherboards
• Support for 288-pin LRDIMM modules
• Compatibility with ECC Registered (Buffered) memory
• Support for DDR4-3200 / PC4-25600 memory standards

Processor Compatibility

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

Overview of Samsung M386AAG40AM3-CWEZY PC4-25600 ECC

The Samsung M386AAG40AM3-CWEZY typifies this category with its 128GB density, enabling multi-terabyte memory configurations in enterprise servers, cloud infrastructure, and mission-critical applications. This category encompasses DDR4 Load-Reduced DIMM (LRDIMM) memory modules designed for high-performance, high-capacity enterprise environments. LRDIMM technology includes an advanced memory buffer that reduces the electrical load on the CPU memory controller, allowing for full population of memory slots with high-capacity modules without degrading signal integrity or operational reliability.

Load-Reduced DIMM Architecture for High-Density Deployments

Load-Reduced DIMMs feature a memory buffer that isolates the memory controller from the electrical load of the DRAM chips. This isolation allows servers to maintain stability and performance even when all memory channels are fully populated with high-density modules. The architecture is optimized for scalability, making it ideal for multi-socket, multi-channel servers where signal integrity and latency consistency are critical. Samsung’s M386AAG40AM3-CWEZY module provides stable operation under maximum load, ensuring predictable performance in enterprise environments.

ECC for Enterprise Reliability

ECC memory is fundamental to this category, providing real-time error detection and correction to prevent data corruption. Single-bit errors are automatically corrected, while multi-bit errors are detected and reported to system administrators. ECC functionality is essential in environments that handle large datasets, virtualization clusters, and in-memory computing, where data integrity directly impacts performance and operational reliability. The Samsung M386AAG40AM3-CWEZY integrates ECC at the module level, delivering continuous protection for mission-critical workloads.

128GB High-Density Memory Capacity

This category is defined by ultra-high-density memory modules that allow enterprise servers to achieve exceptional total memory capacity. Each 128GB LRDIMM module enables multi-terabyte server configurations, reducing the number of DIMMs required and simplifying memory layout, airflow management, and power distribution. High-capacity modules are critical for workloads such as large-scale virtualization, AI model training, big data analytics, and enterprise databases.

Benefits of Multi-Terabyte Memory Configurations

High-density modules support multi-terabyte configurations by maximizing memory per socket, which allows servers to consolidate more workloads onto fewer physical machines. This reduces infrastructure costs, lowers energy consumption, and enhances overall operational efficiency. The Samsung M386AAG40AM3-CWEZY provides an effective solution for organizations requiring extensive memory resources in a compact footprint.

Slot Utilization and Thermal

By enabling high-capacity modules, this category improves slot utilization, reducing the number of DIMMs needed for a target memory size. Fewer modules translate to improved airflow, lower thermal hotspots, and more effective cooling within server chassis. This contributes to the long-term reliability of the server and reduces the risk of thermal-induced performance degradation or hardware failure.

DDR4 3200MBPS Performance and PC4-25600 Bandwidth

The 3200MBPS speed rating of this category provides high throughput for enterprise workloads, while the PC4-25600 specification indicates a theoretical maximum bandwidth of 25.6 GB/s per module. High-speed operation is crucial for memory-intensive applications, including AI, real-time analytics, virtualization, and large-scale simulations, where fast data transfer rates enhance overall system performance.

Enhanced Throughput for Data-Centric Workloads

Memory-intensive workloads, such as in-memory databases and real-time analytics platforms, benefit from the high bandwidth of DDR4 3200MBPS modules. By providing consistent high-speed data access, this category ensures that processors can efficiently utilize system memory, reducing latency and improving throughput for demanding enterprise applications. Samsung’s M386AAG40AM3-CWEZY delivers stable 3200MBPS performance under continuous load, supporting large-scale enterprise operations.

CL22 Latency for Stable Enterprise Operation

CAS Latency of 22 is designed to balance high-speed performance with operational stability. Enterprise workloads prioritize consistent latency and predictable performance over extreme latency tuning. This category ensures that memory timings remain stable across multiple workloads and system configurations, reducing the risk of errors and maintaining system integrity in mission-critical environments.

4Rx4 Memory Organization

The 4Rx4 memory configuration indicates a quad-rank module using x4 DRAM chips, allowing for high capacity within a single module. Quad-rank modules support advanced memory interleaving, which improves parallel access to multiple memory ranks, enhancing overall system efficiency and throughput. This memory organization is essential for servers and high-density enterprise platforms that require both large capacity and high-speed access.

Rank Interleaving Benefits

Quad-rank modules allow memory controllers to alternate memory access across ranks, improving throughput and reducing idle cycles. The 4Rx4 configuration enhances system efficiency in multi-channel architectures, providing better performance for multi-threaded applications. Samsung’s M386AAG40AM3-CWEZY is optimized for rank-level parallelism, ensuring consistent and efficient memory access for enterprise workloads.

Quad-Rank LRDIMMs

Despite their large capacity, quad-rank LRDIMM modules are engineered to operate within strict thermal and power limits. Effective power management reduces energy consumption, while thermal design ensures stable operation under continuous high-density workloads. This category emphasizes reliability and efficiency in demanding server environments, enabling sustainable performance over extended operational periods.

288-Pin DDR4 LRDIMM Form Factor

This category conforms to the 288-pin DDR4 DIMM standard, ensuring mechanical and electrical compatibility with enterprise server motherboards. Standardized form factors allow for robust signal integrity, proper power distribution, and simplified installation in compatible platforms. Adherence to this standard prevents misuse in incompatible systems and guarantees predictable operation across supported servers.

Thermal Endurance for Continuous Operation

Enterprise memory must maintain performance under sustained thermal stress. This category undergoes rigorous testing to ensure long-term durability and stability, even in high-density, multi-rank configurations. Samsung’s quality assurance guarantees that each module can operate 24/7 without performance degradation, supporting continuous mission-critical operations.

Samsung Manufacturing Excellence

Samsung is a global leader in semiconductor technology, and this category benefits from decades of innovation in DRAM production. The M386AAG40AM3-CWEZY module utilizes Samsung-manufactured DRAM chips, ensuring consistent quality, performance, and availability. Vertical integration enables Samsung to control every stage of production, from wafer fabrication to module assembly and rigorous final testing.

JEDEC Enterprise Interoperability

This category strictly adheres to JEDEC standards, ensuring broad compatibility with enterprise server platforms. JEDEC compliance guarantees standardized electrical characteristics, timings, and form factors, simplifying deployment, integration, and upgrades across a variety of server architectures.

Validation and Quality Assurance

Modules in this category undergo extensive validation, including stress testing, platform compatibility testing, and ECC verification. These quality assurance measures ensure the Samsung M386AAG40AM3-CWEZY meets the high reliability and performance standards demanded by modern data centers and enterprise servers.

Enterprise and Data Center Applications

This category is intended for mission-critical applications requiring high-capacity, high-performance memory. LRDIMM technology enables scalability, efficiency, and reliability across a wide range of enterprise environments, including cloud computing, virtualization, AI, and big data analytics. High-capacity memory modules allow virtualized environments to support more virtual machines per host, improving resource utilization and operational efficiency. This category provides ECC protection and load-reduced performance to ensure stable operation across multi-tenant and cloud infrastructures.

In-Memory Databases and Real-Time Analytics

Large datasets benefit from high-density memory, reducing latency and improving query response times. This category supports real-time analytics, business intelligence, and transaction processing systems, enabling organizations to gain faster insights and improve operational decision-making.

Computing and Research Applications

Scientific computing, simulations, and research workloads rely on ultra-high-capacity memory for sustained data processing. This category provides reliable, high-speed memory for engineering simulations, molecular modeling, weather forecasting, and other research-intensive applications.

Engineering and Simulation Workloads

Applications like finite element analysis and computational fluid dynamics demand large memory spaces. This category enables stable, high-capacity configurations capable of handling these workloads efficiently, minimizing computational delays and errors. Research institutions require memory that can operate reliably over long computational periods. This category provides high-density memory solutions that ensure consistent performance, data integrity, and minimal interruption during complex research simulations.

Platform Deployment Considerations

This category is designed for enterprise servers that explicitly support DDR4 LRDIMM memory. Compatibility depends on processor memory controllers, motherboard design, and firmware. Samsung M386AAG40AM3-CWEZY modules are deployed in high-performance servers from leading OEMs and custom-built enterprise platforms designed for maximum memory density.

Multi-Socket and Multi-Channel

Modern enterprise servers leverage multi-socket and multi-channel memory architectures to maximize bandwidth. This category ensures balanced channel population and optimized memory distribution, supporting consistent performance across multi-core and multi-threaded workloads.

Enterprise Value

Enterprise memory investments are assessed based on reliability, lifespan, and operational efficiency. This category emphasizes durable, high-performance memory modules that minimize downtime and reduce maintenance costs, making Samsung M386AAG40AM3-CWEZY a long-term, high-value memory solution for mission-critical infrastructures.

Standardization, Availability, and Infrastructure Confidence

Consistency, production stability, and adherence to standardized specifications are critical in enterprise deployments. This category provides predictable performance, long-term availability, and reliable platform compatibility, offering IT administrators and decision-makers confidence in the deployment of Samsung M386AAG40AM3-CWEZY modules for high-capacity, high-performance memory applications.