M391A2G43BB2-CWE Samsung 16GB DDR4-3200MHz Memory Module

Samsung M391A2G43BB2-CWE 16GB 3200MHz RAM

The Samsung M391A2G43BB2-CWE 16GB PC4-25600 DDR4-3200MHz Memory Module is designed for high-speed performance, reliability, and efficiency in modern computing environments.

General Information

• Brand: Samsung
• Part Number: M391A2G43BB2-CWE
• Category: 16GB DDR4 SDRAM Memory Module

Technical Specifications

Core Features

• Storage Capacity: 16GB
• Memory Technology: DDR4 SDRAM
• Module Count: 1 x 16GB

Performance Attributes

• Bus Speed: 3200Mbps DDR4-3200 / PC4-25600
• Data Integrity: ECC (Error-Correcting Code)
• Signal Processing: Unbuffered
• CAS Latency: CL21
• Rank Configuration: 1Rx8

Physical Characteristics

Design and Build

• Form Factor: 288-pin UDIMM

Dimensions and Weight

Shipping Measurements

• Height: 1.00 inches
• Depth: 6.75 inches

Shipping Weight

• Weight: 0.20 lb

Enterprise DDR4 Server Memory Category Overview

DDR4 server memory modules represent a foundational component in modern data center and enterprise computing environments where stability, data integrity, and predictable performance are mandatory. The Samsung M391A2G43BB2-CWE 16GB PC4-25600 DDR4-3200MHz Memory Module belongs to a professional-grade server memory category designed specifically for sustained workloads, virtualization platforms, cloud infrastructure, database engines, and mission-critical applications. This category emphasizes long-term reliability, strict platform compatibility, and adherence to JEDEC standards, ensuring consistent behavior across a wide range of enterprise server architectures.

Unlike consumer memory, server-class DDR4 modules are engineered for controlled electrical signaling, thermal endurance, and compatibility with registered memory controllers found in modern server CPUs. The DDR4-3200 specification delivers a balanced combination of bandwidth efficiency and power optimization, making it suitable for both performance-focused and energy-conscious deployments. Within this category, Samsung memory modules are widely recognized for manufacturing precision, validation rigor, and firmware-level consistency that enterprise environments demand.

Samsung M391A2G43BB2-CWE Memory Module Classification

The Samsung M391A2G43BB2-CWE memory module fits into the registered ECC DDR4 server memory subcategory. Registered DIMMs are designed to reduce electrical load on the memory controller, allowing systems to scale memory capacity without sacrificing stability. This classification makes the module particularly suitable for multi-DIMM-per-channel server configurations where signal integrity and timing accuracy are critical to system uptime.

This 16GB capacity module supports PC4-25600 throughput, operating at an effective data rate of 3200MHz. The classification ensures that the module meets strict enterprise platform requirements, offering predictable latency behavior and controlled power consumption. As part of Samsung’s enterprise memory lineup, the M391A2G43BB2-CWE undergoes extensive validation with leading server manufacturers, ensuring compatibility across diverse hardware ecosystems.

DDR4-3200 Performance Tier Positioning

Within the DDR4 server memory hierarchy, DDR4-3200 represents a high-efficiency performance tier that maximizes memory bandwidth without introducing excessive power draw. This positioning makes the category ideal for workloads that rely on rapid data access, including virtualization clusters, in-memory databases, analytics engines, and high-concurrency application servers.

The Samsung M391A2G43BB2-CWE operates within this tier to deliver optimized throughput while maintaining the conservative operating parameters required for continuous operation. The balance between speed and thermal efficiency enables data centers to scale performance without increasing cooling or power infrastructure complexity.

Registered DIMM Architecture Significance

Registered DIMM architecture plays a crucial role in enterprise memory scalability. By incorporating a register between the memory controller and the DRAM chips, the module buffers command and address signals, reducing electrical stress on the processor’s memory controller. This design allows for higher memory capacities per channel and improves overall system reliability.

The Samsung M391A2G43BB2-CWE leverages this architecture to support dense memory configurations while maintaining stable timing characteristics. This approach is particularly beneficial in dual-socket and multi-socket servers where memory population density can otherwise compromise signal integrity.

Data Integrity and ECC Reliability Features

Error Correcting Code functionality is a defining characteristic of this server memory category. ECC memory actively detects and corrects single-bit errors during data transmission, significantly reducing the risk of data corruption and system crashes. In enterprise environments where uptime and data accuracy are critical, ECC is not an optional feature but a fundamental requirement.

The Samsung M391A2G43BB2-CWE integrates ECC at the hardware level, enabling real-time error correction without impacting system performance. This ensures that long-running workloads, transactional databases, and virtualized environments remain protected from silent data corruption that could otherwise compromise system integrity.

Memory Stability for Continuous Operation

Enterprise servers often operate continuously for extended periods under heavy load. Memory stability under these conditions is essential to prevent downtime and performance degradation. The DDR4 server memory category prioritizes thermal consistency, controlled voltage operation, and rigorous testing standards.

Samsung memory modules are manufactured using advanced DRAM process technologies and undergo stress testing to validate performance across temperature ranges and usage scenarios. The M391A2G43BB2-CWE is engineered to maintain consistent signal timing and error-free operation, even under sustained utilization.

JEDEC Compliance and Platform Validation

JEDEC compliance ensures that memory modules adhere to standardized electrical, mechanical, and timing specifications. This compliance is essential for cross-platform compatibility and predictable behavior. The Samsung M391A2G43BB2-CWE conforms to JEDEC DDR4 standards, enabling seamless integration into supported server platforms.

In addition to standards compliance, Samsung performs extensive platform validation with major server OEMs. This validation process confirms that the module operates reliably within real-world server configurations, reducing deployment risk for enterprise IT teams.

Thermal Efficiency and Power Optimization

Power efficiency is a central consideration in modern data centers, where energy consumption directly impacts operational costs. DDR4 memory technology introduces improvements in voltage regulation and power management compared to previous generations. Operating at a nominal voltage of 1.2V, the Samsung M391A2G43BB2-CWE minimizes power draw while delivering high-speed performance.

The reduced voltage contributes to lower heat output, which in turn simplifies thermal management strategies. This efficiency allows servers to maintain stable operation in dense rack environments without excessive cooling requirements.

Thermal Behavior in High-Density Server Configurations

High-density server configurations place multiple memory modules in close proximity, increasing the importance of controlled thermal behavior. The DDR4 server memory category addresses this challenge through optimized PCB layouts and DRAM placement that promote even heat distribution.

Samsung’s design approach ensures that the M391A2G43BB2-CWE maintains consistent operating temperatures across the module surface. This uniform thermal profile reduces the risk of localized hotspots that could affect performance or longevity.

Compatibility with Enterprise Server Platforms

Server memory compatibility extends beyond basic electrical specifications. It includes firmware recognition, BIOS support, and alignment with CPU memory controller capabilities. The Samsung M391A2G43BB2-CWE is designed for use in enterprise servers supporting DDR4-3200 registered ECC memory, including systems based on modern Intel Xeon and AMD EPYC processors.

This category of memory is commonly deployed in rack servers, tower servers, and blade systems used in data centers, private clouds, and enterprise IT environments. Compatibility with leading server platforms ensures smooth installation and predictable performance.

Use in Virtualized and Cloud Environments

Virtualization platforms place unique demands on system memory, requiring rapid context switching, high bandwidth, and absolute reliability. The DDR4-3200 registered ECC memory category supports these requirements by delivering consistent throughput and error correction capabilities.

The Samsung M391A2G43BB2-CWE enables virtual machines to operate efficiently, reducing latency during memory-intensive operations and supporting higher VM density per host. This makes it an effective choice for private cloud infrastructure and enterprise virtualization clusters.

Database and In-Memory Application Support

Database servers and in-memory applications rely heavily on memory performance and integrity. Any data inconsistency can have significant operational consequences. ECC DDR4 memory ensures that data stored in memory remains accurate, even during extended processing tasks.

The bandwidth provided by DDR4-3200 allows database engines to access and manipulate data rapidly, improving query response times and transaction throughput. The Samsung M391A2G43BB2-CWE supports these workloads with stable and predictable performance characteristics.

Manufacturing Quality and Samsung DRAM Expertise

Samsung is a global leader in DRAM manufacturing, controlling the entire production process from silicon fabrication to final module assembly. This vertical integration allows for precise quality control and consistency across production batches. The DDR4 server memory category benefits from this expertise through reliable component sourcing and rigorous quality assurance protocols.

The M391A2G43BB2-CWE reflects Samsung’s commitment to enterprise-grade reliability, incorporating high-quality DRAM chips and carefully designed PCBs that meet stringent performance and durability standards.

Long-Term Availability and Lifecycle Support

Enterprise environments often require long-term component availability to maintain consistent hardware configurations over time. Samsung supports extended product lifecycles for its server memory modules, reducing the need for frequent qualification of replacement components.

This long-term availability is particularly valuable for organizations managing large server fleets, as it simplifies maintenance planning and ensures consistent system behavior across deployment phases.

Scalability and Capacity Planning Considerations

Memory scalability is a critical factor in enterprise system design. The 16GB capacity of the Samsung M391A2G43BB2-CWE allows IT architects to build flexible memory configurations that can be expanded as workload demands grow. Registered DIMM architecture enables higher total memory capacities by supporting more modules per channel.

This scalability supports evolving business requirements, allowing systems to accommodate increased data volumes, additional virtual machines, or more complex applications without requiring a complete hardware overhaul.

Balanced Capacity for Performance Optimization

Choosing the appropriate memory capacity per module is essential for balancing performance and cost. A 16GB DDR4-3200 RDIMM offers a versatile option that can be combined across multiple slots to achieve optimal memory distribution and bandwidth utilization.

The Samsung M391A2G43BB2-CWE supports balanced memory population strategies, helping to maximize channel utilization and improve overall system efficiency.

Enterprise Workload Suitability

The DDR4 registered ECC memory category is designed to support a wide range of enterprise workloads, from general-purpose application hosting to specialized compute tasks. The Samsung M391A2G43BB2-CWE is well-suited for environments requiring dependable memory performance under continuous load.

Common use cases include enterprise resource planning systems, customer relationship management platforms, analytics engines, and backend services that require consistent data access and minimal downtime.

Reliability in Mission-Critical Deployments

Mission-critical systems demand components that prioritize reliability over consumer-grade performance enhancements. ECC protection, conservative operating parameters, and extensive validation make DDR4 server memory an essential component in these environments.

The Samsung M391A2G43BB2-CWE provides the reliability foundation needed to support critical business operations, ensuring that memory-related errors do not compromise system stability or data accuracy.

Future-Proofing Within DDR4 Infrastructure

While newer memory generations continue to emerge, DDR4 remains a widely deployed and supported standard in enterprise infrastructure. Investing in high-quality DDR4-3200 server memory allows organizations to maximize the value of existing platforms while maintaining strong performance characteristics.

The Samsung M391A2G43BB2-CWE fits seamlessly into this strategy, offering a mature and proven memory solution that supports current workloads and anticipated growth within DDR4-based systems.

Consistency Across Multi-Node Environments

Consistency is essential in clustered and distributed computing environments where uniform performance characteristics simplify management and optimization. Using identical memory modules across nodes ensures predictable behavior and reduces variability.

Samsung server memory modules are known for tight manufacturing tolerances and consistent specifications, making the M391A2G43BB2-CWE a reliable choice for standardized deployments across multiple servers.