M393A4K40CB2-CTD Samsung 32GB PC4-21300 DDR4 2666MHz SDRAM Cl19 RAM

Highlights of Samsung M393A4K40CB2-CTD 32GB DDR4 Memory

The Samsung M393A4K40CB2-CTD 32GB DDR4 2666MHz RDIMM is a premium server memory module designed for enterprise-class servers and professional workstations. Featuring ECC error correction and registered buffering, this DDR4 SDRAM delivers enhanced data integrity, reliability, and high-performance computing for demanding workloads.

General Information

• Manufacturer: Samsung
• Part Number: M393A4K40CB2-CTD
• Product Type: Server Memory Module
• Sub Type: DDR4 2666MHz PC4-21300

Technical Specifications

• Total Capacity: 32GB
• Rank Structure: Dual Rank x4
• Memory Speed: 2666MT/s
• Bus Speed: DDR4-2666
• Bandwidth Rating: PC4-21300
• CAS Latency: CL19
• Error Correction: ECC (Error-Correcting Code)
• Signal Processing: Registered (Buffered)
• Form Factor: 288-Pin RDIMM
• Memory Type: DDR4 SDRAM

Physical & Shipping Details

• Shipping Height: 1.00 inch
• Shipping Depth: 6.75 inches
• Shipping Weight: 0.20 lb

Compatibility

Supported System Types

• Enterprise rack and tower servers
• Data center and cloud infrastructure systems
• Professional workstations with ECC support
• Virtualization servers and database servers

Processor & Platform

• Intel Xeon server platforms
• AMD EPYC server processor systems
• Server chipsets with ECC and RDIMM support
• Memory-intensive workloads and virtualization

Overview of Samsung M393A4K40CB2-CTD DDR4 ECC RDIMM

The Samsung M393A4K40CB2-CTD 32GB DDR4 2666MHz PC4-21300 SDRAM CL19 Registered ECC RDIMM 288-Pin RAM represents a high-performance memory module specifically designed for enterprise-class server and workstation environments. This category encompasses DDR4 registered memory modules that prioritize reliability, scalability, and data integrity, enabling uninterrupted performance in mission-critical computing environments. These modules are engineered to meet the rigorous demands of modern data centers, virtualization platforms, cloud infrastructures, and high-performance computing applications, where memory stability and accuracy are paramount.

Registered DIMM Architecture for Enhanced Stability

Registered memory modules, such as the Samsung M393A4K40CB2-CTD, incorporate a register between the DRAM chips and the memory controller. This register buffers command and address signals, significantly reducing electrical load and stabilizing communication with the CPU. By improving signal integrity, registered DIMMs allow servers to support higher total memory capacities and increased slot population without compromising reliability. In enterprise server deployments, this architecture is particularly crucial in multi-socket systems and high-density configurations.

32GB High-Density Memory for Enterprise Workloads

The 32GB capacity of the Samsung M393A4K40CB2-CTD places it within the high-density memory segment, a key requirement for modern enterprise workloads. High-capacity memory modules allow servers to host large datasets, run multiple virtual machines, and execute in-memory processing tasks efficiently. This memory category supports the consolidation of resources, enabling fewer physical servers to handle larger workloads without sacrificing performance. High-density memory reduces reliance on slower storage-based operations, improving application response times and overall throughput.

Impact on Cloud Deployments

Virtualized environments require substantial memory allocation to maintain multiple concurrent virtual machines or containers. The Samsung M393A4K40CB2-CTD supports these environments by offering ample memory capacity per module, allowing for high-density memory configurations in virtualized servers. This supports efficient resource allocation, improved consolidation ratios, and optimal performance across virtual workloads. In cloud infrastructures, high-capacity ECC RDIMMs help maintain stability and reliability under dynamic workloads.

DDR4 2666MHz PC4-21300 Performance Specifications

Operating at 2666MHz, the Samsung M393A4K40CB2-CTD falls within the PC4-21300 specification, providing a theoretical peak bandwidth of 21.3GB/s per module. This memory speed represents a balance between performance, power efficiency, and compatibility across enterprise-grade servers. The DDR4 standard introduces multiple improvements over DDR3, including increased prefetch buffers, higher bank group counts, and lower operating voltage, all contributing to improved data throughput and reliability.

CAS Latency CL19 and Timing Consistency

The CL19 latency specification indicates the number of clock cycles between the issuance of a read command and the availability of data. In this enterprise memory category, timing stability and predictability are prioritized over ultra-low latency. The Samsung M393A4K40CB2-CTD’s CL19 rating ensures that memory operations are executed reliably across various workloads and system conditions. Consistent latency is critical for environments where multiple applications or virtual machines access memory simultaneously.

ECC Technology

One of the defining features of the Samsung M393A4K40CB2-CTD is its Error Correcting Code (ECC) capability. ECC memory detects and corrects single-bit errors in real time and can flag multi-bit errors, ensuring the integrity of data stored in memory. This technology is crucial for enterprise environments where data accuracy is non-negotiable, such as financial computing, healthcare systems, and scientific research. Memory errors can occur due to environmental factors, cosmic radiation, or electrical interference. ECC technology mitigates these risks, preventing potential data corruption or system crashes. In long-running server operations, ECC RDIMMs provide a critical safeguard against memory-related failures, contributing to system reliability and data protection.

Integration of ECC with Registered Buffering

The combination of ECC and registered buffering offers a synergistic effect on system stability and reliability. Registered buffers stabilize signal transmission to the memory controller, while ECC ensures that any transient errors are corrected immediately. Together, these features allow servers to operate with large memory capacities across multiple channels without the risk of instability or data loss. This integrated design makes the Samsung M393A4K40CB2-CTD ideal for high-availability servers, enterprise databases, and cloud platforms, where system downtime or data corruption can result in significant operational and financial consequences.

288-Pin RDIMM Form Factor

The 288-pin RDIMM form factor is a standardized physical interface for DDR4 registered memory modules. This form factor provides mechanical and electrical compatibility with server motherboards designed to support RDIMM configurations. The Samsung M393A4K40CB2-CTD adheres to JEDEC standards, ensuring seamless integration with a wide range of enterprise-grade platforms. RDIMM modules are electrically distinct from unbuffered and load-reduced DIMMs, making proper selection critical for system compatibility. This memory category is specifically designed for servers and workstations that require the reliability and scalability features provided by registered ECC memory modules.

Multi-Channel and Multi-Socket

Modern server processors feature multi-channel memory architectures to maximize bandwidth and improve parallel processing efficiency. The Samsung M393A4K40CB2-CTD is optimized for multi-channel deployments, allowing balanced population of memory channels and maximizing throughput. Proper channel balancing reduces latency and improves performance consistency across workloads. In multi-socket server systems, registered memory ensures uniform signaling across all sockets, enabling higher total memory capacity and consistent performance even in dense configurations.

Benefits for Data Center

In large-scale enterprise deployments, energy-efficient memory contributes to reduced cooling requirements, lower operational costs, and improved sustainability metrics. The Samsung M393A4K40CB2-CTD supports these objectives by combining high performance with reduced power consumption, enabling data centers to achieve high memory densities without excessive energy usage.

Samsung Manufacturing Excellence and Enterprise Validation

Samsung is a recognized global leader in DRAM manufacturing, and the M393A4K40CB2-CTD reflects the company’s commitment to quality, reliability, and innovation. Each module undergoes rigorous testing for timing accuracy, voltage tolerance, thermal performance, and ECC functionality. This validation ensures compatibility and reliable operation across supported platforms and workloads. Enterprise customers benefit from Samsung’s long-term product lifecycle management, which guarantees consistent specifications, reliable availability, and simplified maintenance. These attributes make this memory category a dependable choice for organizations planning long-term infrastructure deployments.

Longevity and Continuous Operation Reliability

Enterprise servers often operate continuously for extended periods, placing high demands on memory stability. Samsung’s quality control and testing processes are designed to minimize early-life failures and ensure consistent performance over time. The M393A4K40CB2-CTD is built to withstand the rigors of 24/7 operation, making it suitable for mission-critical workloads where downtime is unacceptable.

Enterprise Application and Workload

The Samsung M393A4K40CB2-CTD 32GB DDR4 ECC Registered RDIMM memory module is ideal for a variety of enterprise workloads. Application servers benefit from stable memory performance under high concurrency. Database servers utilize the module’s high capacity for caching, in-memory processing, and rapid query execution, reducing dependence on slower storage subsystems. File servers, storage arrays, and backup systems also rely on reliable ECC RDIMM memory to manage metadata, caching, and data integrity operations. The Samsung M393A4K40CB2-CTD ensures that these operations are protected against transient errors, providing consistent system performance and reliability across various enterprise applications.

Cloud Environments

Cloud infrastructures, private or hybrid, require scalable and dependable memory solutions to manage dynamic workloads. The 32GB capacity of this module supports flexible resource allocation while maintaining predictable performance and stability. ECC registered memory further enhances system reliability in multi-tenant environments where workload intensity fluctuates.

Strategic Role in Modern IT Architecture

Memory is a foundational component in enterprise IT architecture, impacting system performance, scalability, and reliability. The Samsung M393A4K40CB2-CTD 32GB DDR4 2666MHz PC4-21300 CL19 Registered ECC RDIMM memory module exemplifies a high-quality solution within this category, offering a balance of capacity, performance, and data protection tailored to modern server and workstation deployments. Its adoption ensures enterprise systems remain robust, efficient, and reliable under demanding operational conditions.