Samsung M386AAG40DM3-CWEZY 128GB 3200MBPS PC4-25600 Cl22 ECC Memory

Highlights of Samsung M386AAG40DM3-CWEZY 128GB DDR4 Ram

The Samsung M386AAG40DM3-CWEZY is a high-performance, load-reduced memory module built for enterprise servers and data center deployments. With a massive 128GB capacity and DDR4-3200 speed, this LRDIMM is ideal for virtualization, cloud computing, in-memory databases, and other memory-intensive workloads.

General Information

• Manufacturer: Samsung
• Part Number: M386AAG40DM3-CWEZY
• Product Type: Server Memory Module
• Memory Interface: DDR4 SDRAM PC4-25600

Technical Specifications

• Total Memory Size: 128GB
• Module Quantity: 1 x 128GB
• Rank Layout: 4Rx4
• Memory Speed: 3200MBPS
• Memory Standard: DDR4-3200 / PC4-25600
• CAS Latency: CL22
• Error Detection & Correction: ECC Support
• Signal Type: Registered (Buffered)
• Operating Voltage: 1.2V
• Memory Form Factor: LRDIMM
• Pin Configuration: 288-Pin
• Designed For: Enterprise-grade and data center servers

Shipping & Packaging Details

• Shipping Height: 1.00 Inch
• Shipping Depth: 6.75 Inch
• Shipping Weight: Approx. 0.20 lb

Compatibility

Dell PowerEdge Server Compatibility

• Dell PowerEdge R750
• Dell PowerEdge R650
• Dell PowerEdge R740
• Dell PowerEdge R740xd
• Dell PowerEdge R760 (DDR4-supported configurations)

Dell Equivalent Memory Part Numbers

• SNPJ8MGVC/128G
• SNPYH6M9C/128G

HPE ProLiant Server Compatibility

• HPE ProLiant DL380 Gen10
• HPE ProLiant DL380 Gen10 Plus
• HPE ProLiant DL360 Gen10
• HPE ProLiant ML350 Gen10

HPE SmartMemory Reference Codes

• P07647-B21
• P07647-001

Lenovo ThinkSystem Compatibility

• Lenovo ThinkSystem SR650
• Lenovo ThinkSystem SR630
• Lenovo ThinkSystem SR670

Lenovo FRU / Option Numbers

• 4X77A77496
• 4X77A08634

Supermicro Server Compatibility

• Supermicro X12DPG-QT6
• Supermicro X12DPi-N6
• Supermicro X12SPM-TF

Supermicro Memory Reference Code

• MEM-DR412L-SL02-ER32

Overview of Samsung M386AAG40DM3-CWEZY DDR4 3200MBPS

The Samsung M386AAG40DM3-CWEZY 128GB DDR4 memory module is positioned within the enterprise-grade Load Reduced DIMM memory category, a specialized segment of server memory engineered for extreme capacity, signal stability, and continuous operational reliability. This category addresses the growing demand for higher memory density in modern data centers, cloud platforms, and mission-critical enterprise systems. DDR4 LRDIMM technology enables servers to scale memory far beyond the limitations of traditional unbuffered or standard registered memory, making it an essential component for high-end computing infrastructures.

Enterprise DDR4 LRDIMM Memory Category

Load Reduced DIMM memory incorporates advanced buffering technology that minimizes the electrical load presented to the memory controller. This architectural design allows server platforms to populate more ranks and higher-capacity modules per channel without compromising performance or stability. The Samsung M386AAG40DM3-CWEZY exemplifies this category by delivering 128GB of DDR4 memory in a single module while maintaining compliance with JEDEC standards and enterprise server requirements.

128GB Ultra-High-Density Memory Capacity

The 128GB capacity places this memory module firmly in the ultra-high-density LRDIMM subcategory, which is tailored for servers that require exceptionally large memory footprints. As enterprise workloads continue to shift toward data-intensive applications, memory capacity has become a primary performance determinant. This category enables organizations to deploy servers capable of handling massive datasets, complex analytics, and large-scale virtualization without frequent memory expansion.

Scalability Benefits for Memory-Constrained Platforms

Many enterprise server platforms are limited by the number of available DIMM slots per CPU. This memory category addresses that limitation by maximizing capacity per slot, allowing organizations to scale memory without changing hardware platforms. The ability to deploy 128GB modules ensures long-term scalability and protects infrastructure investments. By reducing the total number of modules required, servers benefit from simplified maintenance and improved reliability. This scalability advantage makes the Samsung M386AAG40DM3-CWEZY an ideal choice for environments with growing and unpredictable memory demands.

DDR4-3200 Performance and PC4-25600 Bandwidth

Operating at 3200 megatransfers per second, this memory module belongs to the DDR4-3200 performance tier, commonly referred to as PC4-25600. This category represents one of the highest standardized DDR4 speeds supported by enterprise server processors. Higher memory speeds translate directly into increased bandwidth, which is critical for data-intensive workloads that require rapid access to large datasets. PC4-25600 bandwidth enables servers to reduce memory access bottlenecks, allowing processors to operate more efficiently. Applications such as virtualization hosts, large databases, real-time analytics engines, and high-performance computing workloads benefit significantly from this increased throughput.

Modern Server CPU Architectures

This category of DDR4 LRDIMM memory is designed to integrate seamlessly with modern server processors that support load reduced DIMMs, including enterprise-class Intel Xeon and AMD EPYC platforms. The Samsung M386AAG40DM3-CWEZY adheres to JEDEC specifications, ensuring predictable performance and compatibility across certified server motherboards. In multi-socket systems, consistent memory speed across all channels is essential for balanced performance. DDR4-3200 LRDIMM modules allow servers to maintain high memory speeds even in fully populated configurations, supporting NUMA-aware applications and distributed workloads.

ECC Registered Memory for Data Integrity

Error Correcting Code functionality is a critical feature of this memory category. ECC Registered memory is designed to detect and correct single-bit memory errors and identify multi-bit errors before they impact system stability or data integrity. In enterprise environments where uptime and accuracy are essential, ECC protection is a foundational requirement. The Samsung M386AAG40DM3-CWEZY integrates hardware-level ECC mechanisms that continuously monitor memory operations. This capability significantly reduces the risk of data corruption caused by transient electrical disturbances, component aging, or environmental factors.

Registered and Load Reduced Architecture Synergy

The combination of registered signaling and load reduced buffering provides enhanced electrical stability across memory channels. The register buffers command and address signals, while the isolation memory buffer manages data signals, reducing stress on the memory controller. This synergistic design allows servers to support higher rank counts and larger modules without compromising reliability. The memory category represented by the Samsung M386AAG40DM3-CWEZY is specifically engineered for systems that demand both high capacity and uncompromising data integrity.

Quad-Rank 4Rx4 Memory Organization

The 4Rx4 quad-rank configuration is a defining attribute of this LRDIMM memory category. Quad-rank modules present four independent ranks to the memory controller, enabling greater memory density and improved parallelism. The x4 DRAM chip layout enhances error management and aligns with enterprise reliability standards. Quad-rank memory improves memory interleaving, which can enhance throughput in workloads that involve multiple simultaneous memory accesses. The Samsung M386AAG40DM3-CWEZY leverages this architecture to deliver stable performance across a wide range of enterprise applications.

Impact on Throughput and Workload Distribution

Enterprise workloads often involve numerous concurrent processes competing for memory access. Quad-rank LRDIMM modules help distribute memory traffic more evenly across ranks, reducing contention and improving overall system efficiency. This design is particularly beneficial for virtualization platforms and database servers, where consistent memory performance under load is essential for predictable service delivery.

Operating Voltage Characteristics at 1.2V

The Samsung M386AAG40DM3-CWEZY operates at a standard DDR4 voltage of 1.2V, which supports the additional buffering and isolation circuitry required for load reduced operation. This voltage level ensures stable performance in high-capacity configurations while maintaining predictable power consumption. Although LRDIMM modules consume slightly more power than standard RDIMMs due to their advanced buffering components, this memory category is optimized for efficiency at scale. Data centers benefit from the ability to deploy fewer modules to achieve desired capacity, offsetting the per-module power requirements.

Thermal Considerations in Dense Deployments

High-density memory modules generate additional heat, particularly in fully populated server systems. This memory category is designed to operate reliably under sustained thermal conditions, supporting enterprise servers with advanced cooling solutions. The Samsung M386AAG40DM3-CWEZY is suitable for rack-mounted, blade, and modular server environments where thermal management is critical to long-term reliability.

Standard 288-Pin LRDIMM Form Factor

The 288-pin form factor is the industry standard for DDR4 server memory, ensuring compatibility with a wide range of enterprise server platforms that support LRDIMM technology. This category adheres strictly to JEDEC mechanical and electrical specifications, simplifying integration and deployment. The physical design of the Samsung M386AAG40DM3-CWEZY ensures secure installation and reliable electrical contact, reducing the risk of intermittent connectivity issues in mission-critical systems.

Server-Only Memory Classification

This memory category is designed exclusively for server and workstation platforms that explicitly support load reduced DIMMs. LRDIMM modules are not compatible with consumer desktop systems or standard unbuffered memory slots. By focusing solely on enterprise environments, this category prioritizes durability, compatibility, and continuous operation over consumer-oriented performance characteristics.

Latency Characteristics and CL22 Timing Profile

With a CAS latency rating of CL22, this DDR4-3200 LRDIMM module is optimized for enterprise workloads that prioritize throughput, capacity, and stability. Latency in this category is balanced to ensure reliable operation across all ranks and channels rather than achieving the lowest possible access times. The Samsung M386AAG40DM3-CWEZY delivers consistent timing behavior under heavy memory utilization, which is essential for applications that require predictable performance rather than short burst speeds.

Predictable Performance Under Sustained Load

Enterprise applications often involve sustained memory access patterns that place continuous demands on system resources. This memory category is engineered to maintain stable latency characteristics even when operating near maximum capacity. Predictable performance simplifies capacity planning and workload optimization for IT teams managing complex server environments.

Cloud Infrastructure Enablement

High-capacity LRDIMM memory is foundational for virtualization and cloud computing environments, where memory density directly affects consolidation ratios and operational efficiency. The Samsung M386AAG40DM3-CWEZY enables servers to host a larger number of virtual machines or containers without memory contention. This category supports modern hypervisors and cloud platforms by providing large, reliable memory pools that can be dynamically allocated to workloads as demand fluctuates.

High VM Density and Resource

Virtualized environments benefit from large memory capacities that allow higher virtual machine density per host. This memory category reduces the need for additional physical servers, lowering capital and operational expenses. The Samsung M386AAG40DM3-CWEZY supports efficient memory utilization strategies, enabling enterprises to maximize return on infrastructure investments.

Database, Analytics, and In-Memory Computing Applications

Memory-intensive workloads such as relational databases, big data analytics platforms, and in-memory computing frameworks rely heavily on large, reliable memory resources. This LRDIMM memory category supports these workloads by enabling servers to keep extensive datasets resident in memory. The Samsung M386AAG40DM3-CWEZY improves query performance, reduces latency, and enhances overall system responsiveness by minimizing reliance on slower storage tiers.

Samsung DRAM Engineering and Manufacturing Excellence

Samsung is a global leader in semiconductor and memory manufacturing, and this module reflects the company’s commitment to enterprise-grade quality. The Samsung M386AAG40DM3-CWEZY is produced using advanced DRAM process technologies that ensure long-term reliability and performance consistency. Each module undergoes rigorous validation and quality assurance testing to meet enterprise standards. This focus on manufacturing excellence makes Samsung memory a trusted choice for mission-critical server deployments.

Stability and Enterprise Availability

Enterprise memory categories emphasize long production lifecycles and consistent specifications to support standardized server deployments. The Samsung M386AAG40DM3-CWEZY is designed for extended availability, enabling organizations to maintain uniform memory configurations over time. This lifecycle stability simplifies procurement, reduces compatibility risks, and supports long-term infrastructure planning.

Reliability, Availability, and Continuous Operation

This memory category is engineered for continuous 24/7 operation in demanding enterprise environments. Features such as ECC protection, load reduced buffering, and strict adherence to JEDEC standards contribute to high reliability and reduced failure rates. The Samsung M386AAG40DM3-CWEZY is suitable for deployment in mission-critical systems where downtime or data corruption is unacceptable.

Enterprise Deployment Readiness

Industries such as finance, healthcare, telecommunications, research, and government require memory components that can operate reliably under all conditions. This LRDIMM memory category meets those requirements by combining extreme capacity, stable performance, and proven compatibility. The Samsung M386AAG40DM3-CWEZY represents a dependable solution for enterprise servers that demand scalability, integrity, and long-term operational confidence.