M393AAK40B42-CWD6Q Samsung 128GB DDR4 SDRAM Ecc Reg Ram

Highlights of Samsung 128GB 2666Mhz RAM

The Samsung M393AAK40B42-CWD6Q 128GB DDR4 ECC SDRAM is a high-capacity memory solution designed for enterprise servers and advanced computing environments. This module ensures reliable performance, efficient data processing, and enhanced stability for mission-critical workloads.

Main Information

• Brand: Samsung
• Model Number: M393AAK40B42-CWD6Q
• Product Type: 128GB DDR4 SDRAM Memory Module

Technical Specifications

Memory Capacity

• Large storage size: 128GB
• Ideal for data-intensive applications

Memory Type

• Advanced DDR4 SDRAM technology
• Optimized for speed and efficiency

Form Factor

DIMM Structure

• 288-pin Registered DIMM (RDIMM)
• Designed for server-grade compatibility

Performance Speed

Data Transfer Rate

• 2666 MHz frequency
• PC4-21300 bandwidth for faster throughput

Latency Information

CAS Latency

• Standard CL19 latency
• Alternative variation: CL22

Rank Organization

Memory Architecture

• Octal Rank (8Rx4)
• 2S4Rx4 stacked 4-rank design

Voltage Efficiency

Power Consumption

• Low operating voltage: 1.2V
• Energy-efficient design for reduced heat output

Error Correction

ECC Technology

Data Integrity Features

• Error-Correcting Code (ECC) support
• Ensures reliable data accuracy
• Protects against system crashes and corruption

Enterprise-Class DDR4 Registered Memory Category Overview

The Samsung M393AAK40B42-CWD6Q 128GB DDR4 Registered ECC memory module belongs to a high-performance enterprise memory category engineered for mission-critical server and data center workloads. This category focuses on large-capacity, error-resilient, and bandwidth-efficient memory solutions designed to support modern computing environments where reliability, scalability, and stability are non-negotiable. DDR4 Registered DIMMs, commonly referred to as RDIMMs, are widely deployed in enterprise servers, virtualization platforms, cloud infrastructures, database systems, and high-density computing nodes that demand consistent uptime and predictable performance.

As part of this category, 128GB DDR4 RDIMM modules provide an optimal balance between capacity and speed, allowing system architects to maximize memory density per CPU socket while maintaining signal integrity across multi-DIMM configurations. The Samsung M393AAK40B42-CWD6Q operates at 2666MHz with a PC4-21300 data rate, making it a practical choice for platforms that support DDR4-2666 memory standards and prioritize dependable throughput over experimental overclocking.

DDR4 SDRAM Technology in Enterprise Memory Solutions

DDR4 SDRAM represents a significant advancement over previous memory generations by offering higher bandwidth, improved power efficiency, and enhanced reliability features. In the enterprise memory category, DDR4 technology enables servers to process large volumes of data simultaneously while maintaining lower operating voltages compared to DDR3. This contributes to reduced thermal output and improved energy efficiency across large-scale deployments.

The Samsung M393AAK40B42-CWD6Q leverages DDR4 architecture to support intensive workloads such as in-memory databases, real-time analytics, virtualization clusters, and enterprise application hosting. DDR4 SDRAM modules in this category are designed to operate continuously under sustained load, ensuring stable memory performance during peak usage periods.

High-Density Memory Design for Scalable Architectures

High-density memory modules such as 128GB RDIMMs are essential components in modern server architectures where scalability is a core requirement. This category supports servers that require large memory footprints to accommodate virtual machines, containers, and memory-intensive applications without frequent hardware expansion. By utilizing high-capacity modules, system administrators can reduce the total number of DIMM slots required, simplifying system design and improving airflow within server chassis.

The Samsung M393AAK40B42-CWD6Q is purpose-built for such environments, enabling higher memory capacity per node while maintaining compatibility with enterprise-grade motherboards and processors that support DDR4 Registered memory configurations.

Registered ECC Memory Architecture Explained

Registered ECC memory is a defining feature of this category, providing both signal buffering and error correction capabilities that are critical in enterprise computing. The registered design includes a register chip that buffers command and address signals before they reach the memory chips. This buffering reduces electrical load on the memory controller, allowing servers to support more DIMMs per channel without compromising stability.

Error Correcting Code functionality further enhances reliability by detecting and correcting single-bit memory errors and identifying multi-bit errors. In environments where data integrity is paramount, such as financial systems, healthcare databases, and enterprise resource planning platforms, ECC memory significantly reduces the risk of data corruption and system crashes.

Advantages of ECC in Mission-Critical Workloads

ECC memory plays a crucial role in maintaining data accuracy during continuous operation. In large-scale systems, even minor memory errors can propagate through applications, leading to incorrect calculations or unexpected system behavior. This category emphasizes ECC-enabled modules like the Samsung M393AAK40B42-CWD6Q to ensure long-term system stability and consistent performance.

ECC functionality is particularly valuable in virtualization environments where multiple workloads share the same physical memory resources. By correcting errors at the hardware level, ECC memory minimizes downtime and reduces the need for manual intervention.

Characteristics of PC4-21300 DDR4 Memory

The PC4-21300 designation indicates a theoretical maximum bandwidth of approximately 21.3GB/s per module. This performance level aligns with DDR4-2666 memory standards, offering sufficient throughput for a wide range of enterprise applications. In this category, memory performance is evaluated not only by raw speed but also by consistency and predictability under sustained workloads.

The Samsung M393AAK40B42-CWD6Q is optimized to deliver stable performance at its rated frequency, ensuring compatibility with server platforms that enforce strict memory validation requirements. This makes it suitable for OEM-certified systems and enterprise deployments where firmware and BIOS configurations rely on standardized memory profiles.

CAS Latency and Its Role in Server Memory

With a CAS latency rating of CL22, this memory module balances access latency with overall throughput. In enterprise environments, slightly higher latency is often acceptable in exchange for increased capacity and reliability. Applications such as virtualization, cloud hosting, and large-scale data processing benefit more from memory availability and stability than from marginal reductions in access latency.

The CL22 specification ensures predictable timing behavior, which is critical for systems running synchronized workloads or real-time applications that require consistent response times.

Compatibility with Modern Server Platforms

This category is designed to support a wide range of modern server platforms from leading CPU manufacturers. DDR4 Registered ECC memory modules are commonly validated for use with enterprise processors that feature integrated memory controllers capable of handling high-capacity RDIMMs. The Samsung M393AAK40B42-CWD6Q adheres to industry-standard specifications, ensuring seamless integration with compatible server motherboards and chipsets.

Compatibility extends beyond basic electrical specifications to include firmware-level support, thermal management considerations, and mechanical form factors. The 288-pin DIMM design ensures physical compatibility with standard DDR4 memory slots used in enterprise servers.

Use in Multi-Socket Server Configurations

Multi-socket servers benefit significantly from high-capacity registered memory modules. By populating each memory channel with fewer high-density DIMMs, system designers can achieve optimal memory bandwidth distribution while minimizing signal degradation. This category supports such configurations, making it ideal for dual-socket and quad-socket servers deployed in data centers and enterprise environments.

The Samsung M393AAK40B42-CWD6Q enables efficient memory scaling in these systems, supporting balanced NUMA architectures and improved overall system responsiveness.

Thermal Stability and Power Efficiency

DDR4 memory operates at a nominal voltage of 1.2V, contributing to improved power efficiency compared to previous generations. In high-density configurations, reduced power consumption translates to lower heat output, which is critical for maintaining optimal operating temperatures in server racks.

The Samsung M393AAK40B42-CWD6Q is engineered to maintain stable operation across a wide temperature range, ensuring consistent performance even in densely populated server environments.

Use Cases Across Enterprise and Data Center Environments

This memory category is well-suited for a diverse range of enterprise applications. Virtualization platforms rely on large memory pools to host multiple virtual machines efficiently. Database servers benefit from increased in-memory caching, reducing disk I/O and improving query response times. Cloud service providers utilize high-capacity memory modules to support scalable infrastructure that can adapt to fluctuating demand.

The Samsung M393AAK40B42-CWD6Q addresses these use cases by providing ample memory capacity, robust error correction, and dependable performance under sustained workloads.

Application in High-Performance Computing

High-performance computing environments often require substantial memory resources to process large datasets and complex simulations. While raw memory speed is important, stability and accuracy are equally critical. This category supports HPC workloads by offering memory modules that maintain data integrity throughout extended computational tasks.

The combination of ECC protection and registered architecture makes this memory module a reliable choice for scientific research, engineering simulations, and analytics-driven applications.

Scalability Benefits in Modern IT Infrastructure

Scalability is a defining characteristic of enterprise memory categories. High-capacity DDR4 RDIMMs enable organizations to scale memory resources in line with application growth without frequent hardware refresh cycles. This approach supports cost-effective expansion and simplifies capacity planning.

The Samsung M393AAK40B42-CWD6Q supports scalable infrastructure strategies by allowing incremental memory upgrades that align with evolving workload requirements.

Supporting Virtualized and Cloud-Native Workloads

Virtualized environments place unique demands on system memory, requiring both capacity and reliability. This category addresses these needs by offering memory modules capable of sustaining high utilization levels while maintaining data integrity. Cloud-native applications, which often scale dynamically, benefit from the flexibility provided by high-density memory configurations.

By integrating modules like the Samsung M393AAK40B42-CWD6Q, organizations can build resilient platforms that adapt to changing workloads without compromising performance or stability.