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

Samsung M391A4G43AB1-CWE DDR4 32GB 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.

General Information

• Brand: Samsung
• Part Number: M391A4G43AB1-CWE
• Category: 32GB DDR4 SDRAM Memory Module

Technical Specifications

Core Attributes

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

Performance Features

• 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

Enterprise-Grade DDR4 UDIMM Memory Category Overview

The Samsung M391A4G43AB1-CWE 32GB DDR4 UDIMM memory module belongs to a professional-grade memory category designed for reliability, stability, and consistent performance in workstation and entry-level server environments. This category focuses on ECC unbuffered DDR4 SDRAM modules that deliver dependable data integrity while maintaining compatibility with a wide range of modern desktop-class and server-grade motherboards. The emphasis within this category is on balancing capacity, speed, and error correction features without introducing the latency overhead commonly associated with registered or buffered memory.

DDR4 SDRAM Architecture and Design Philosophy

DDR4 SDRAM represents a significant evolution over previous memory generations, offering higher bandwidth, lower operating voltage, and improved efficiency. Within this category, DDR4 memory modules are engineered using advanced semiconductor fabrication techniques that allow for higher density ICs and improved signal integrity. The Samsung M391A4G43AB1-CWE exemplifies this design philosophy by integrating high-quality DRAM chips arranged in a dual-rank configuration, ensuring balanced access patterns and optimized memory throughput across supported platforms.

Dual Rank x8 Configuration Advantages

The 2Rx8 layout used in this memory module category provides meaningful performance and compatibility benefits. Dual-rank memory allows the memory controller to interleave access between ranks, improving effective bandwidth under multitasking or memory-intensive workloads. The x8 chip organization further enhances compatibility with a wide range of processors and chipsets that expect x8-based ECC UDIMMs for optimal error correction functionality. This configuration is particularly relevant for systems that require stable memory behavior under sustained load conditions.

Signal Integrity and Layout Optimization

Memory modules in this category are manufactured with carefully optimized PCB layouts to maintain signal integrity at high operating frequencies. The 3200Mbps data rate demands precise trace routing, impedance matching, and quality soldering to minimize noise and timing issues. Samsung’s manufacturing standards ensure that each module meets stringent electrical specifications, contributing to long-term reliability and predictable performance across varying environmental conditions.

ECC Unbuffered Memory Category Characteristics

Error Correcting Code unbuffered memory occupies a specialized position within the broader memory market. This category is tailored for systems that require enhanced data integrity without the additional latency or cost associated with registered memory. ECC UDIMM modules such as the Samsung M391A4G43AB1-CWE are widely used in professional workstations, network appliances, and entry-level servers where data accuracy is critical but system architecture does not support RDIMM or LRDIMM solutions.

Error Detection and Correction Capabilities

ECC memory modules incorporate additional parity bits that allow the memory controller to detect and correct single-bit errors in real time. This capability significantly reduces the risk of data corruption, application crashes, or system instability caused by transient memory faults. In environments where long uptime and consistent operation are required, ECC unbuffered memory provides a crucial layer of protection while maintaining lower complexity compared to buffered alternatives.

Unbuffered Design and Latency Considerations

The unbuffered architecture of this memory category ensures direct communication between the memory controller and the DRAM chips. This results in lower latency compared to registered memory, making ECC UDIMMs suitable for workloads that benefit from responsive memory access. The CL22 latency specification at 3200Mbps reflects a balance between speed and stability, aligning with industry standards for DDR4 ECC unbuffered modules.

Compatibility with Modern CPU Memory Controllers

Modern processors from leading manufacturers are designed to support ECC unbuffered DDR4 memory when paired with compatible chipsets and motherboards. This category is particularly relevant for systems based on workstation-class CPUs that offer ECC support without requiring registered memory. The Samsung M391A4G43AB1-CWE is engineered to operate seamlessly within these ecosystems, ensuring predictable behavior and broad platform compatibility.

Performance Profile of DDR4-3200 ECC UDIMM Memory

The DDR4-3200 speed grade defines a performance-oriented segment within the ECC UDIMM category. Operating at 3200Mbps, this memory category delivers substantial bandwidth improvements over earlier DDR4 generations, supporting faster data transfers and improved application responsiveness. This makes it suitable for demanding professional workloads such as virtualization, database processing, and content creation.

Bandwidth and Throughput Considerations

At PC4-25600, this memory category provides a theoretical maximum bandwidth that supports multi-threaded applications and data-intensive processes. Increased bandwidth allows CPUs to access data more efficiently, reducing bottlenecks and improving overall system performance. The Samsung M391A4G43AB1-CWE leverages this bandwidth to deliver consistent performance under sustained workloads.

Latency Optimization at High Frequencies

While higher frequencies often introduce increased latency, this category is designed to maintain acceptable timing characteristics through careful binning and validation. The CL22 latency rating aligns with JEDEC standards for DDR4-3200 ECC UDIMMs, ensuring stable operation across supported platforms. This balance between frequency and latency is critical for applications that rely on predictable memory access patterns.

Real-World Workload Efficiency

In practical scenarios, the performance benefits of DDR4-3200 ECC UDIMM memory manifest in faster application load times, smoother multitasking, and improved system responsiveness. Professional users benefit from reduced error rates and consistent performance, particularly in environments where systems operate continuously for extended periods.

Voltage Efficiency and Thermal Characteristics

The 1.2V operating voltage defines a key efficiency aspect of the DDR4 ECC UDIMM category. Lower voltage operation reduces overall power consumption and heat generation, contributing to improved system efficiency and thermal management. This is especially important in dense system configurations or environments with limited cooling capacity.

Power Consumption Optimization

DDR4 memory modules are designed to deliver higher performance per watt compared to previous generations. The reduced voltage requirement minimizes energy loss while maintaining signal integrity at high data rates. The Samsung M391A4G43AB1-CWE adheres to these efficiency principles, supporting energy-conscious system designs.

Thermal Stability Under Continuous Load

Thermal stability is a critical consideration for ECC memory used in professional systems. Modules in this category are validated to operate reliably within specified temperature ranges, even under continuous load. The absence of excessive heat generation reduces the risk of thermal throttling or long-term component degradation.

Integration with System Cooling Solutions

Standard 288-pin UDIMM form factors allow seamless integration with common airflow and cooling designs found in workstations and servers. This ensures that memory modules receive adequate cooling without requiring specialized heat spreaders or custom solutions, maintaining simplicity and reliability.

Physical Form Factor and Mechanical Compatibility

The 288-pin UDIMM form factor defines the physical and electrical interface for this memory category. This standardized design ensures broad compatibility with motherboards that support DDR4 unbuffered ECC memory, simplifying system integration and upgrades.

Module Dimensions and Slot Compatibility

UDIMM modules conform to precise dimensional standards that ensure proper seating and electrical contact within memory slots. The Samsung M391A4G43AB1-CWE follows these specifications, allowing easy installation and secure retention in compatible systems.

Keying and Voltage Safeguards

The DDR4 keying design prevents incorrect installation into incompatible slots, reducing the risk of physical damage. This mechanical safeguard, combined with voltage compatibility checks performed by modern motherboards, enhances overall system safety.

Durability and Build Quality Standards

Memory modules in this category are built using high-quality PCBs and components that withstand repeated installation cycles and long-term operation. Samsung’s manufacturing process emphasizes durability, ensuring that each module maintains electrical and mechanical integrity throughout its service life.

Use Case Alignment and Professional Applications

The ECC UDIMM DDR4-3200 memory category is well suited for a wide range of professional and enterprise-adjacent applications. These include workstation computing, small-scale virtualization, network services, and data-sensitive workloads that benefit from enhanced memory reliability.

Workstation and Content Creation Environments

Professional workstations used for design, engineering, and media production require stable memory performance to handle complex datasets and multitasking. ECC unbuffered memory reduces the risk of data corruption during long rendering or simulation tasks, supporting consistent output quality.

Entry-Level Server and Network Appliance Deployment

In entry-level server environments, ECC UDIMM memory provides a cost-effective reliability solution. Systems such as file servers, directory services, and network appliances benefit from error correction without the need for registered memory architectures.