Samsung M391A4G43BB1-CWE 32GB 3200MBPS PC4-25600 DDR4 SDRAM Memory

Highlights of Samsung 32GB PC4-25600 DDR4 RAM

The Samsung M391A4G43BB1-CWE is a high-performance 32GB DDR4 SDRAM memory module designed to deliver exceptional speed and reliability for modern computing systems.

Manufacturer Details

• Manufacturer: Samsung
• Model Number: M391A4G43BB1-CWE
• Product Type: 32GB DDR4 SDRAM Memory Module

Technical Highlights

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

Performance Specifications

• Data Integrity: ECC (Error-Correcting Code)
• Signal Processing: Unbuffered
• CAS Latency: CL22
• Rank Configuration: 2Rx8

Physical Characteristics

Form Factor

• Design: 288-pin UDIMM

Dimensions & Weight

Shipping Measurements

• Height: 1.00 inch
• Depth: 6.75 inches

Shipping Weight

• Weight: 0.20 lb

Overview of Samsung M391A4G43BB1-CWE 32GB DDR4 RAM

The Samsung M391A4G43BB1-CWE 32GB DDR4 UDIMM memory module represents a professional-class memory category engineered for stability, data integrity, and consistent performance in workstation and entry-level server environments. This category focuses on ECC unbuffered DDR4 SDRAM technology designed to balance reliability and latency efficiency without the added complexity of registered or load-reduced buffering. Built around Samsung’s advanced semiconductor manufacturing expertise, this memory category supports demanding computing workloads where accuracy, uptime, and compatibility are critical.

DDR4 UDIMM ECC memory modules like this one are widely deployed in professional desktops, tower servers, and specialized systems that require error correction while maintaining lower access latency compared to registered DIMMs. The unbuffered design allows the memory controller to communicate directly with the DRAM chips, which improves responsiveness and keeps power consumption within efficient operating thresholds. This category is particularly valued in IT infrastructures that require predictable behavior under continuous workloads.

DDR4 SDRAM Technology and Key Characteristics

The DDR4 SDRAM technology used in the Samsung M391A4G43BB1-CWE operates at a data transfer rate of 3200 megatransfers per second, corresponding to the PC4-25600 specification. This places the module within a high-performance tier of DDR4 memory, capable of supporting modern multi-core processors and high-bandwidth applications. The improved prefetch architecture and bank group structure of DDR4 allow this memory category to achieve higher throughput while maintaining efficient power usage.

Operating at a nominal voltage of 1.2 volts, this DDR4 memory category reduces overall system power consumption compared to earlier DDR3 generations. Lower voltage operation contributes to reduced thermal output, which is especially beneficial in compact server enclosures and workstations that operate continuously. The combination of high bandwidth and low voltage makes this memory category suitable for compute-intensive workloads, virtualization environments, and professional content creation systems.

PC4-25600 Bandwidth Advantages

Memory modules classified under PC4-25600 deliver a theoretical peak bandwidth of up to 25.6 gigabytes per second per module. This bandwidth capacity enables faster data movement between the processor and memory subsystem, minimizing bottlenecks in applications that rely on rapid access to large datasets. The Samsung M391A4G43BB1-CWE category is therefore well-suited for database processing, scientific simulations, and enterprise software platforms that demand sustained memory throughput.

In multi-DIMM configurations, PC4-25600 memory can significantly enhance overall system responsiveness by supporting parallel data streams across memory channels. This makes the category ideal for systems configured with dual-channel or quad-channel memory architectures, where balanced memory population is essential for optimal performance.

Error Correction Code Memory Reliability

A defining characteristic of this memory category is its ECC functionality, which provides automatic detection and correction of single-bit memory errors. ECC memory is essential in professional computing environments where data integrity cannot be compromised. By correcting transient errors caused by electrical interference or cosmic radiation, ECC memory reduces the risk of system crashes, corrupted files, and application instability.

The Samsung M391A4G43BB1-CWE ECC UDIMM category is particularly valuable in systems running critical workloads such as financial modeling, medical imaging, and server-based applications. ECC memory ensures that calculations and stored data remain accurate over long operational periods, supporting system reliability and user confidence.

ECC UDIMM Versus Non-ECC Memory

Compared to non-ECC UDIMM memory, ECC-enabled modules provide an additional layer of protection against silent data corruption. While non-ECC memory may offer similar raw performance, it lacks the built-in error correction mechanisms that are essential for mission-critical computing. This category bridges the gap between consumer-grade memory and fully registered server memory by delivering ECC reliability without the higher latency associated with buffered designs.

Systems that support ECC UDIMM memory can benefit from improved uptime and reduced troubleshooting costs. The Samsung M391A4G43BB1-CWE category is therefore a preferred choice for professionals who require both performance and dependability.

Unbuffered DIMM Design and System Compatibility

The unbuffered DIMM design of this memory category allows direct electrical communication between the memory controller and the DRAM chips. This design choice results in lower latency compared to registered memory modules, making ECC UDIMM an optimal solution for systems where responsiveness is a priority. The absence of a register also simplifies signal paths, which can enhance overall system efficiency.

Samsung’s adherence to JEDEC standards ensures broad compatibility across supported motherboards and platforms. The M391A4G43BB1-CWE category is commonly compatible with professional-grade desktops and entry-level servers that explicitly support ECC UDIMM DDR4 memory. This makes it a versatile option for system builders and IT professionals seeking reliable upgrades.

288-Pin UDIMM Form Factor

This memory category utilizes the standard 288-pin UDIMM form factor, which is widely supported across modern DDR4-capable motherboards. The physical design ensures secure installation and stable electrical connections, reducing the likelihood of contact-related issues. The standardized pin layout also simplifies system upgrades and maintenance.

The 288-pin UDIMM design supports high-density configurations without compromising signal integrity. This enables systems to scale memory capacity efficiently while maintaining consistent performance levels.

32GB Capacity for Advanced Workloads

With a capacity of 32GB per module, the Samsung M391A4G43BB1-CWE category addresses the growing memory requirements of modern applications. High-capacity modules allow systems to handle larger datasets, run multiple virtual machines, and support complex multitasking scenarios. This memory category is particularly beneficial for professionals working with data analytics, virtualization, and advanced software development environments.

Deploying 32GB UDIMM modules reduces the total number of DIMM slots required to reach high memory capacities. This can improve airflow within the system chassis and simplify future expansion plans.

2Rx8 Memory Rank Configuration

The dual-rank 2Rx8 configuration of this memory category provides a balanced approach to performance and compatibility. Dual-rank memory can offer improved performance in certain workloads by allowing better utilization of the memory controller. The x8 DRAM chip organization aligns with ECC requirements, ensuring effective error correction capabilities.

This rank configuration is widely supported across professional platforms, making the Samsung M391A4G43BB1-CWE category a dependable choice for system integrators and enterprise users.

CAS Latency and Timing Efficiency

The CAS latency rating of CL22 reflects a timing profile optimized for stability at high data rates. While lower CAS values may offer marginally faster access times, CL22 is a balanced choice for DDR4-3200 ECC UDIMM memory, ensuring reliable operation under sustained workloads. This category prioritizes consistent performance and error-free operation over aggressive timing optimizations.

Stable timing parameters are essential in enterprise and workstation environments, where memory errors or instability can lead to costly downtime. Samsung’s stringent validation processes ensure that this memory category meets reliability standards under real-world operating conditions.

Latency Considerations in Professional Systems

In professional computing scenarios, overall system performance depends on a balance between memory bandwidth, latency, and reliability. The Samsung M391A4G43BB1-CWE category delivers predictable latency characteristics that align with the requirements of ECC-enabled platforms. This ensures smooth performance in applications that rely on consistent memory access patterns.

Thermal Efficiency and Power Management

Operating at 1.2 volts, this DDR4 memory category contributes to improved thermal efficiency within the system. Lower operating voltage reduces heat generation, which can extend component lifespan and improve overall system stability. Efficient power management is especially important in systems that operate continuously or are deployed in environments with limited cooling capacity.

Samsung’s advanced DRAM manufacturing processes further enhance thermal performance by optimizing chip layout and power distribution. This ensures that the M391A4G43BB1-CWE category maintains stable operation even under sustained workloads.

Impact on System Cooling Design

By reducing thermal output, low-voltage DDR4 ECC UDIMM memory allows system designers greater flexibility in cooling solutions. This can lead to quieter operation and more compact system designs, particularly in workstation and small server deployments.

Use Cases and Deployment Scenarios

The Samsung M391A4G43BB1-CWE 32GB DDR4 ECC UDIMM memory category is suitable for a wide range of professional applications. Common deployment scenarios include workstation systems for engineering and design, entry-level servers for small businesses, and development platforms requiring reliable memory performance. The combination of ECC reliability, high capacity, and DDR4-3200 speed makes this category adaptable to diverse computing needs.

IT professionals and system integrators often select this category for its compatibility, stability, and trusted brand reputation. Whether upgrading existing systems or building new configurations, this memory category provides a dependable foundation for modern computing environments.

Scalability in Multi-DIMM Configurations

When deployed in multi-DIMM configurations, the Samsung M391A4G43BB1-CWE category supports scalable memory architectures that can grow alongside evolving workload demands. This scalability ensures long-term value and flexibility for professional users planning future system expansions.