M391A4G43AB1-CWE Samsung 32GB DDR4 RAM 3200mhz PC4-25600

Higlights of Samsung 32GB 3200MHz DDR4 RAM

The Samsung M391A4G43AB1-CWE 32GB DDR4 RAM delivers exceptional speed and reliability with 3200MHz PC4-25600 performance, making it ideal for servers, workstations, and high-demand computing environments.

Main Specifications 

• Manufacturer: Samsung
• Model Number: M391A4G43AB1-CWE
• Product Type: 32GB DDR4 SDRAM Memory Module

Technical Highlights

• Capacity: 32GB
• Technology: DDR4 SDRAM
• Module Count: 1 x 32GB
• Bus Speed: 3200Mbps DDR4-3200 / PC4-25600

Performance Specifications

• Error Correction: ECC (Error-Correcting Code)
• Signal Type: Unbuffered
• CAS Latency: CL22
• Rank Configuration: 2RX8

Physical Characteristics

Form Factor

• Type: 288-pin UDIMM

Dimensions & Weight

Measurements

• Height: 1.00 inch
• Depth: 6.75 inches

Weight

• Shipping Weight: 0.20 lb

Overview of Samsung M391A4G43AB1-CWE 32GB DDR4 RAM

The Samsung M391A4G43AB1-CWE 32GB DDR4 UDIMM memory module belongs to a specialized category of unbuffered ECC system memory designed for workstations, entry-level servers, and professional desktop platforms that require enhanced data integrity and dependable performance. This category focuses on DDR4 SDRAM technology combined with error correction capabilities, offering a balance between affordability, reliability, and compatibility with a wide range of modern Intel and AMD chipsets that support ECC UDIMM configurations.

DDR4 UDIMM memory modules in this category operate at lower voltages compared to previous DDR3 generations, allowing system builders to reduce overall power consumption while maintaining higher memory bandwidth. The PC4-25600 rating indicates optimized throughput suitable for data-heavy tasks such as virtualization, content creation, engineering simulations, database processing, and business-critical applications where memory stability is essential.

Unbuffered ECC DDR4 Memory Architecture and Design

The architecture of ECC unbuffered DDR4 memory modules like the Samsung M391A4G43AB1-CWE emphasizes direct communication between the memory controller and the DRAM chips without the use of a register or buffer. This design minimizes latency, making UDIMM modules suitable for systems that prioritize responsiveness while still benefiting from single-bit error correction and multi-bit error detection.

Unlike registered DIMMs commonly found in large-scale enterprise servers, unbuffered ECC memory is typically deployed in smaller servers and professional workstations. This category serves environments where workload predictability and data accuracy matter but where the additional cost and latency of registered memory are not required.

Error Correction Code Technology in ECC UDIMM Memory

Error Correction Code technology is a defining feature of this memory category. ECC functionality continuously monitors data stored in memory and corrects single-bit errors automatically. This capability is critical in scenarios involving long system uptime, continuous data processing, or applications where even minor memory errors could lead to crashes, corrupted files, or inaccurate computational results.

The Samsung M391A4G43AB1-CWE integrates ECC directly into its DDR4 SDRAM design, making it ideal for professional systems running financial software, scientific workloads, medical imaging applications, and server-grade operating systems that support ECC memory validation.

Dual Rank x8 Configuration Benefits

The dual rank x8 configuration of this 32GB UDIMM module enhances memory access efficiency by allowing the memory controller to interleave operations between ranks. This improves overall throughput in multi-threaded workloads and helps maintain stable performance under sustained memory load conditions.

Dual rank designs are particularly advantageous in professional systems that rely on memory-intensive tasks. This category supports better utilization of available memory channels, making it suitable for environments where consistent bandwidth delivery is a priority.

Characteristics of DDR4-3200 PC4-25600 Memory

Operating at a data rate of 3200 megatransfers per second, DDR4-3200 memory represents a mature and widely adopted performance tier within the DDR4 ecosystem. The PC4-25600 bandwidth rating ensures that systems can handle high-speed data transfers efficiently, reducing bottlenecks in CPU-to-memory communication.

This category of memory is optimized for platforms that support JEDEC-standard DDR4-3200 speeds, ensuring broad compatibility and stable operation without the need for manual overclocking or advanced BIOS tuning.

CAS Latency CL22 and Its Role in System Stability

The CL22 latency specification reflects a balance between performance and reliability. While lower latency modules are often associated with enthusiast overclocking, CL22 DDR4 memory is engineered for dependable operation under continuous workloads. This makes it suitable for professional and server-adjacent environments where stability outweighs marginal latency improvements.

The Samsung M391A4G43AB1-CWE is validated to operate at its rated latency and speed, ensuring consistent behavior across supported platforms and reducing the risk of memory-related system instability.

Voltage Efficiency at 1.2V

Operating at 1.2 volts, this DDR4 UDIMM module aligns with JEDEC standards for energy-efficient memory operation. Lower voltage operation reduces heat output and power draw, which is especially beneficial in compact workstation builds or small server enclosures with limited cooling resources.

This voltage efficiency contributes to the longevity of system components and supports environmentally conscious system design strategies commonly adopted in modern IT infrastructure.

Form Factor and Physical Specifications

The 288-pin UDIMM form factor defines this memory category as compatible with standard desktop and workstation DIMM slots that support DDR4 technology. The physical layout ensures proper electrical signaling and mechanical fit within supported motherboards.

This category excludes laptop SO-DIMM configurations and registered server DIMMs, focusing instead on systems that require full-size memory modules with ECC support and direct memory controller access.

Compatibility with Workstation and Entry-Level Server Platforms

Memory modules like the Samsung M391A4G43AB1-CWE are designed to work with motherboards and processors that explicitly support ECC UDIMM memory. This includes select Intel Xeon E-series processors, Intel Core processors with ECC-enabled chipsets, and AMD Ryzen Pro or EPYC platforms configured for unbuffered ECC memory.

This category is frequently chosen by system integrators building reliable professional workstations, small business servers, and network appliances that benefit from ECC protection without requiring enterprise-grade registered memory.

JEDEC Compliance and Industry Validation

JEDEC compliance ensures that this DDR4 memory module adheres to industry standards for timing, voltage, and electrical characteristics. This compliance simplifies deployment across a wide range of compatible systems and reduces the likelihood of interoperability issues.

Samsung’s manufacturing process includes rigorous testing and validation, positioning this memory category as a trusted choice for OEMs and enterprise system builders.

Use Cases and Workload Suitability

The DDR4 ECC UDIMM category addresses a broad spectrum of professional and semi-enterprise use cases. Systems equipped with this type of memory are commonly used in environments where data reliability is essential but where cost and power efficiency remain important considerations.

The 32GB capacity of the Samsung M391A4G43AB1-CWE allows for efficient multitasking and supports memory-hungry applications without frequent paging to storage, improving overall system responsiveness.

Virtualization and Containerized Workloads

Virtualization platforms benefit significantly from ECC memory due to the continuous memory allocation and deallocation processes involved in running multiple virtual machines. This category provides the stability required to host development environments, test servers, and lightweight production workloads.

Dual rank DDR4-3200 performance ensures that virtual machines receive consistent memory bandwidth, reducing performance variability under load.

Content Creation and Engineering Applications

Professional content creators and engineers often rely on applications that process large datasets in memory. ECC UDIMM memory reduces the risk of silent data corruption during rendering, simulation, and design workflows.

This category supports extended work sessions and high memory utilization scenarios, making it suitable for CAD software, 3D modeling tools, and scientific analysis applications.

Thermal Characteristics and Operational Stability

DDR4 memory modules in this category are designed to operate within standard thermal envelopes without the need for additional heat spreaders. Efficient power consumption and optimized DRAM layout contribute to stable thermal behavior even under heavy workloads.

This thermal efficiency supports deployment in compact chassis and dense workstation environments where airflow may be limited.

Scalability and System Expansion Considerations

The 32GB capacity of this memory module allows system builders to scale memory configurations efficiently. Multiple UDIMM slots can be populated to achieve higher total memory capacities while maintaining ECC protection and DDR4-3200 performance.

This category supports incremental upgrades, enabling organizations to expand system memory as workload requirements grow without replacing existing modules.

Multi-Channel Memory Configurations

When installed in matched configurations, DDR4 UDIMM modules like the Samsung M391A4G43AB1-CWE can operate in dual-channel or quad-channel modes depending on platform support. Multi-channel operation increases aggregate memory bandwidth and improves performance in parallel workloads.

This capability makes the category suitable for compute-intensive applications that benefit from increased memory throughput.

Future-Proofing Professional Systems

Although newer memory technologies continue to emerge, DDR4 remains widely supported across a large installed base of professional hardware. This category offers a stable and cost-effective solution for systems that prioritize proven technology and long-term compatibility.

The combination of ECC protection, 32GB capacity, and DDR4-3200 performance ensures that systems equipped with this memory remain relevant and capable for years of professional use.

Small Business Servers and Network Appliances

Small business servers benefit from ECC memory by reducing downtime caused by memory-related errors. This category supports file servers, directory services, and application servers that must operate reliably with minimal administrative intervention.

The unbuffered design ensures low latency, which is beneficial for network services and transactional workloads.

Professional Desktop and Workstation Builds

Workstations used for software development, data analysis, and creative production often require memory configurations that balance performance and accuracy. ECC UDIMM memory provides an added layer of confidence in computational results.

This category supports modern workstation platforms that integrate server-grade reliability features into desktop-class systems.