M386AAG40AM3-CWELQ Samsung 3200MBPS PC4-25600 Cl22 DDR4 128GB Ram

Highlights of Samsung M386AAG40AM3-CWELQ 128GB DDR4 Ram

The Samsung M386AAG40AM3-CWELQ is a high-density 128GB DDR4 memory module designed for enterprise servers and data center environments. Engineered for exceptional performance, scalability, and reliability, this ECC Registered LRDIMM module is ideal for demanding workloads such as virtualization, cloud computing, and large-scale databases.

General Information

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

Technical Specifications

• Total Capacity: 128GB
• Module Quantity: 1 x 128GB
• Rank Structure: 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 server workloads

Physical Design and Form Factor

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

Compatibility

Supported Server Environments

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

Motherboard and Memory Requirements

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

Processor Compatibility

• Intel Xeon Scalable processors (select models supporting DDR4-3200)
• Intel Xeon E-series server CPUs
• AMD EPYC server processors
• Other enterprise processors with DDR4 LRDIMM support

Overview of Samsung M386AAG40AM3-CWELQ PC4-25600 ECC

The Samsung M386AAG40AM3-CWELQ stands as a flagship example of this category, offering 128GB per module and supporting memory configurations that scale into multi-terabyte territory. This category encompasses DDR4 Load-Reduced DIMM memory modules that adhere to strict JEDEC server memory standards while pushing the upper limits of capacity and bandwidth. LRDIMM technology introduces advanced buffering mechanisms that isolate the processor’s memory controller from the electrical load of individual DRAM components. This design enables servers to populate all available memory slots with very high-capacity modules without sacrificing speed or reliability.

Load-Reduced Architecture for Maximum Scalability

Load-Reduced DIMM architecture goes beyond traditional registered memory by buffering both command and data signals. This significantly reduces the electrical stress placed on the CPU’s integrated memory controller, allowing for higher memory densities per channel. In large enterprise servers and multi-socket systems, this capability is critical for achieving maximum memory capacity without compromising stability. The category represented by the Samsung M386AAG40AM3-CWELQ is specifically designed for platforms where full DIMM slot population and uniform performance across channels are required.

ECC Memory as a Foundation for Data Integrity

Error Correction Code functionality is a non-negotiable requirement in this memory category. ECC memory continuously monitors data stored in RAM, detecting and correcting single-bit errors while identifying multi-bit errors before they can compromise system stability. In environments where vast amounts of data are processed in memory, such as virtualization clusters and in-memory databases, ECC is essential for preventing silent data corruption. The Samsung M386AAG40AM3-CWELQ integrates robust ECC support, ensuring data accuracy and system reliability under continuous operation.

128GB Memory Capacity and Extreme Density Classification

This category is defined by ultra-high-density memory modules that dramatically expand total system memory capacity. A single 128GB LRDIMM allows enterprise servers to reach memory capacities that were previously achievable only with significantly larger numbers of lower-capacity modules. This level of density is critical for modern workloads that rely on large memory pools, including artificial intelligence, machine learning, big data analytics, and large-scale virtualization.

Enabling Multi-Terabyte Server Configurations

Servers equipped with 128GB LRDIMM modules can achieve multi-terabyte memory configurations when all slots are populated. This category supports advanced server platforms that are designed to handle massive in-memory datasets. By reducing the number of DIMMs required to reach target capacities, this memory class simplifies system architecture and improves overall efficiency. High-capacity memory modules allow system architects to design servers with greater flexibility. This category reduces the need for excessive DIMM population, freeing up space for improved airflow and reducing thermal density around the memory subsystem. The result is a more balanced and efficient server design capable of sustaining heavy workloads over long periods.

DDR4 3200MBPS Speed and PC4-25600 Bandwidth Tier

The DDR4 3200MBPS operating speed places this memory category at the top tier of DDR4 enterprise performance. PC4-25600 indicates a theoretical maximum bandwidth of approximately 25.6 GB/s per module, providing substantial throughput for data-intensive applications. This speed tier is supported by modern server processors and platforms optimized for high-frequency memory operation.

High Bandwidth for Memory-Intensive Workloads

Workloads such as real-time analytics, large-scale simulations, and AI model training benefit significantly from higher memory bandwidth. This category delivers consistent high-speed data access, enabling processors to operate efficiently without being constrained by memory throughput limitations. The Samsung M386AAG40AM3-CWELQ is engineered to deliver stable performance at 3200MBPS within JEDEC specifications.

CL22 Latency for Enterprise Stability

CAS Latency 22 reflects a timing profile optimized for stability and compatibility rather than aggressive tuning. In enterprise environments, predictable and consistent latency is often more valuable than minimal latency. This category prioritizes reliable operation under sustained load, ensuring that memory timing remains stable across diverse workloads and platform configurations.

4Rx4 Memory Organization and Architectural Advantages

The 4Rx4 configuration denotes a quad-rank memory module utilizing x4 DRAM chips. This organization is characteristic of ultra-high-capacity LRDIMM modules and is essential for achieving 128GB density within a single DIMM. Quad-rank designs enable advanced memory interleaving and parallelism, improving overall memory efficiency in compatible server platforms. Multiple ranks allow the memory controller to interleave access across ranks, reducing idle cycles and improving throughput. This category leverages quad-rank architecture to enhance performance in multi-core and multi-socket server environments. The Samsung M386AAG40AM3-CWELQ is optimized for platforms that can take full advantage of rank-level parallelism.

Thermal Balance in 4Rx4 Modules

Despite their high density, quad-rank LRDIMM modules are engineered to operate within strict power and thermal limits. This category balances performance and efficiency through advanced buffering and power regulation techniques. Proper thermal management ensures reliable operation even in densely populated memory configurations.

288-Pin DDR4 LRDIMM Form Factor

This category adheres to the 288-pin DDR4 DIMM physical standard, which is required for modern enterprise server platforms. The form factor ensures proper mechanical fit, electrical signaling, and power delivery in systems that support LRDIMM memory. It also prevents accidental installation in incompatible consumer-grade systems.

Voltage Data Center Power

Operating at a standard DDR4 voltage of 1.2V, this memory category supports energy-efficient data center operations. Lower operating voltage reduces power consumption and heat generation, contributing to lower cooling costs and improved overall efficiency. The Samsung M386AAG40AM3-CWELQ is designed to maintain stable voltage operation under sustained workloads.

Thermal Endurance for 24/7 Enterprise Operation

Enterprise memory must operate reliably around the clock in demanding thermal environments. This category undergoes extensive thermal validation to ensure long-term durability. Samsung’s quality assurance processes verify that each module can withstand prolonged exposure to elevated temperatures without degradation.

Samsung Semiconductor Manufacturing Leadership

Samsung’s reputation as a global leader in semiconductor manufacturing underpins this memory category. The Samsung M386AAG40AM3-CWELQ is built using Samsung-produced DRAM components, ensuring consistent quality, performance, and availability. Vertical integration allows Samsung to control every stage of production, from advanced wafer fabrication to final module testing.

Strict JEDEC Interoperability

This category strictly adheres to JEDEC standards, ensuring compatibility with a wide range of enterprise server platforms. JEDEC compliance standardizes timings, voltages, and electrical characteristics, simplifying integration and reducing the risk of compatibility issues during deployment or upgrades.

Comprehensive Validation and Quality Control

Memory modules in this category undergo rigorous validation processes, including stress testing, platform compatibility testing, and ECC verification. These procedures ensure that the Samsung M386AAG40AM3-CWELQ meets the reliability expectations of enterprise and data center environments.

Enterprise Data Center and Cloud Deployment Scenarios

This category is designed to support the most demanding enterprise and cloud workloads. Ultra-high-capacity LRDIMM memory is a cornerstone of modern data center architecture, enabling scalability, flexibility, and performance across a wide range of applications.

Containerized Infrastructure

Virtualized environments benefit from large memory pools that allow higher virtual machine and container density per host. This category enables efficient resource allocation and supports memory-intensive workloads without compromising stability. ECC and load-reduced design ensure reliable operation in multi-tenant environments.

In-Memory Databases and Big Data Analytics

In-memory databases rely on massive amounts of RAM to store and process data in real time. This category enables such platforms to scale effectively, reducing latency and improving query performance. High bandwidth and large capacity make it ideal for big data analytics and real-time decision-making systems.

Computing and Scientific Applications

Scientific research and high-performance computing applications demand memory solutions that can handle large datasets and sustained computational workloads. This category supports simulations, modeling, and data analysis tasks that require both capacity and reliability. Applications such as finite element analysis, weather modeling, and molecular simulations rely on large contiguous memory spaces. This category enables such workloads by providing stable, high-density memory configurations capable of supporting complex computations.

Platform Deployment Considerations

This category is intended for enterprise server platforms that explicitly support DDR4 LRDIMM memory. Compatibility depends on processor memory controller capabilities, motherboard design, and firmware support. The Samsung M386AAG40AM3-CWELQ is commonly deployed in high-end enterprise servers from major OEMs as well as custom-built systems designed for maximum memory capacity.

Multi-Socket and Multi-Channel

Modern enterprise servers utilize multi-socket and multi-channel memory architectures to maximize bandwidth and scalability. This category is optimized for balanced memory population across channels, ensuring consistent performance and efficient resource utilization. Ultra-high-capacity memory modules allow organizations to plan for future growth without immediate platform replacement. This category supports incremental upgrades, enabling additional modules to be added as workload demands increase.

Enterprise Value

Memory investments in enterprise environments are evaluated based on reliability, longevity, and operational efficiency. This category prioritizes durability and predictable performance, reducing downtime and maintenance costs over the system lifecycle. The Samsung M386AAG40AM3-CWELQ delivers long-term value as a core component of scalable enterprise infrastructure.