M393A4K40CB2-CTD7Q Samsung DDR4 32GB 2666mhz PC4-21300 ECC Reg RAM

Highlights of Samsung M393A4K40CB2-CTD7Q 32GB DDR4 Ram

The Samsung M393A4K40CB2-CTD7Q is a dependable 32GB DDR4 ECC Registered (RDIMM) server memory module built for enterprise servers and professional workstations. Designed to provide consistent speed, enhanced data integrity, and long-term stability, this RAM module is ideal for mission-critical computing environments.

General Information

• Manufacturer: Samsung
• Part Number: M393A4K40CB2-CTD7Q
• Product Type: Server Memory Module
• Sub Type: DDR4 2666MHz PC4-21300

Technical Specifications

• Memory Technology: DDR4 SDRAM
• Total Capacity: 32GB
• Bus Speed: DDR4-2666
• Memory Standard: PC4-21300
• CAS Latency: CL19
• Data Integrity: ECC Supported
• Signal Processing: Registered / Buffered
• Rank Configuration: Dual Rank x4 (2Rx4)

Physical & Form Factor Details

• Form Factor: 288-Pin RDIMM
• Height: 1.00 inch
• Depth: 6.75 inches
• Shipping Weight: 0.20 lb

Compatibility

Supported Memory Specifications

• DDR4 SDRAM memory technology
• DDR4-2666 / PC4-21300 standard
• ECC (Error-Correcting Code) support
• Registered / Buffered RDIMM design
• Dual Rank x4 (2Rx4) architecture
• 288-Pin DIMM slot

Compatible Server Platforms

• Intel Xeon Scalable processor-based servers
• Intel Xeon E5, Silver, and Gold systems
• AMD EPYC enterprise server platforms
• Rack, tower, and blade server environments

Compatible Server Brands

• Dell PowerEdge servers
• HPE ProLiant servers
• Lenovo ThinkSystem servers
• Supermicro server motherboards
• IBM System x servers

Overview of Samsung M393A4K40CB2-CTD7Q DDR4 2666MHz

The Samsung M393A4K40CB2-CTD7Q 32GB DDR4 2666MHz PC4-21300 SDRAM 288-Pin RDIMM ECC Registered RAM belongs to a high-performance enterprise memory category designed for professional server, data center, and workstation platforms. This category represents registered DDR4 memory modules engineered to deliver dependable performance, scalability, and long-term operational stability in environments where system reliability and data integrity are mandatory. Built using Samsung’s proprietary DRAM technology, this memory classification aligns with stringent industry standards required by enterprise hardware manufacturers and IT infrastructure architects.

DDR4 SDRAM Technological Framework

DDR4 SDRAM technology introduced significant advancements over earlier memory generations, providing higher bandwidth, improved efficiency, and better scalability. Operating at a data rate of 2666MHz, this memory category achieves a PC4-21300 throughput, supporting modern processors that rely on fast and stable memory access for computational efficiency. The increased bank groups and prefetch architecture inherent to DDR4 enable improved parallelism and reduced latency across enterprise workloads. The Samsung M393A4K40CB2-CTD7Q category leverages DDR4’s optimized signaling and lower operating voltage to deliver consistent performance while reducing power consumption.

PC4-21300 Throughput and Workload

With a PC4-21300 bandwidth rating, this memory category supports up to 21.3GB per second of data transfer per module. Such throughput is essential for memory-intensive applications, including virtualization, in-memory databases, enterprise resource planning platforms, and high-frequency transaction processing systems. The consistent bandwidth delivery ensures processors remain optimally fed with data, preventing memory bottlenecks that can degrade application performance. When deployed in multi-channel configurations, the Samsung M393A4K40CB2-CTD7Q category enables servers to achieve substantial aggregate memory bandwidth. This is especially beneficial in dual-socket and quad-socket systems where memory throughput scales with channel population and module capacity.

32GB Capacity for High-Density Server Configurations

The 32GB module capacity places this category firmly within the high-density memory segment, allowing system designers to maximize total memory per server without exhausting available DIMM slots. High-capacity RDIMM modules are essential for modern enterprise systems that must support large datasets, numerous virtual machines, or memory-resident applications. By utilizing 32GB DDR4 RDIMM modules, organizations can design servers with expanded memory headroom, enabling future growth without immediate hardware replacement. This approach supports long-term infrastructure planning and reduces total cost of ownership by extending server lifecycle usability.

Dual-Rank Memory Structure and Performance

The Samsung M393A4K40CB2-CTD7Q category utilizes a dual-rank memory configuration, allowing the memory controller to interleave access across ranks for improved throughput. Dual-rank memory enhances performance in multi-threaded and multi-core processing environments by increasing memory-level parallelism. This design is particularly advantageous for enterprise workloads that involve concurrent data access patterns, such as virtualization platforms hosting multiple guest operating systems. The ability to efficiently manage simultaneous memory requests contributes to smoother workload execution and reduced latency.

ECC Registered Ram for Data Integrity

Error-Correcting Code functionality is a defining feature of enterprise-class memory, and the Samsung M393A4K40CB2-CTD7Q category exemplifies this requirement. ECC technology detects and corrects single-bit memory errors in real time, ensuring data integrity across continuous operation cycles. In environments where systems operate 24/7, even minor memory errors can lead to application crashes, corrupted data, or security vulnerabilities. ECC Registered RAM is essential for servers running mission-critical applications such as financial systems, healthcare databases, telecommunications platforms, and cloud infrastructure services. This memory category ensures stable system behavior by preventing memory-related faults from propagating into higher software layers.

Advanced Reliability and Availability Characteristics

The combination of ECC and registered buffering allows this memory category to support advanced reliability features required by enterprise platforms. These features include memory mirroring, lockstep operation, and enhanced error detection mechanisms available on supported server chipsets. The Samsung M393A4K40CB2-CTD7Q category is designed to integrate seamlessly with such platform-level protections. By maintaining data accuracy and system stability under sustained workloads, this memory classification contributes to higher service availability and reduced downtime. This reliability is critical for organizations with strict uptime requirements and service-level agreements.

288-Pin RDIMM Form Factor Standardization

The 288-pin RDIMM form factor represents the standardized physical interface for DDR4 registered memory modules. The Samsung M393A4K40CB2-CTD7Q category conforms fully to JEDEC specifications, ensuring compatibility with a wide range of enterprise server and workstation motherboards. This standardization simplifies procurement, deployment, and future upgrades across heterogeneous IT environments. RDIMM modules are specifically designed for platforms that support registered memory, distinguishing them from unbuffered DIMMs used in consumer desktops. This category is intended for professional hardware ecosystems where memory scalability and reliability are prioritized over cost-driven consumer features.

Platform Across Enterprise Systems

This memory category is compatible with numerous Intel Xeon and AMD EPYC processor platforms that support DDR4-2666 RDIMM ECC memory. Such broad compatibility allows system integrators and IT departments to standardize memory configurations across multiple server models and generations. Standardized compatibility also reduces qualification time during system deployment, ensuring predictable performance and minimizing integration challenges. The Samsung M393A4K40CB2-CTD7Q category is widely recognized by enterprise OEMs for its consistent adherence to specification requirements.

Samsung Semiconductor Manufacturing Excellence

Samsung’s leadership in semiconductor manufacturing is reflected in the quality and consistency of the M393A4K40CB2-CTD7Q memory category. Samsung designs and manufactures its own DRAM chips, allowing tight control over process optimization, quality assurance, and performance consistency. This vertical integration ensures that each memory module meets stringent enterprise-grade standards. Memory modules in this category undergo extensive validation testing, including electrical, thermal, and compatibility assessments. This rigorous testing process ensures reliable operation under real-world server workloads and environmental conditions.

Data Center Validation

The Samsung M393A4K40CB2-CTD7Q category is commonly qualified by original equipment manufacturers for use in branded enterprise servers and workstations. OEM qualification ensures that the memory operates reliably within specific platform designs, firmware configurations, and thermal envelopes. Data center operators value this level of validation because it reduces the risk of compatibility issues and unexpected failures. The widespread adoption of this memory category in enterprise environments underscores its proven reliability and performance characteristics.

Thermal Stability and Continuous Operation Design

Enterprise memory modules are expected to function reliably under sustained load conditions and elevated ambient temperatures. The Samsung M393A4K40CB2-CTD7Q category is engineered with thermal stability in mind, using high-quality materials and design practices that support efficient heat dissipation. Stable thermal behavior is essential in densely populated server configurations where airflow can be restricted. This memory category maintains consistent performance without thermal throttling, contributing to overall system stability and longevity.

24/7 Workload Endurance

Servers deployed in enterprise and data center environments often operate continuously without interruption. The Samsung M393A4K40CB2-CTD7Q category is designed to withstand such continuous operation, maintaining data integrity and performance over extended uptime cycles. This endurance reduces the frequency of maintenance interventions and supports predictable operational behavior, allowing IT teams to focus on strategic initiatives rather than reactive troubleshooting.

Cloud Infrastructure Applications

Virtualized environments place unique demands on system memory, requiring high capacity, low latency, and exceptional reliability. The Samsung M393A4K40CB2-CTD7Q category supports virtualization platforms by providing ample memory resources for hosting multiple virtual machines concurrently. Cloud infrastructure providers benefit from the scalability of this memory category, enabling efficient resource allocation and high VM density per host. ECC protection ensures that virtualized workloads remain isolated from hardware-level memory errors.

Database and Analytics Workload

Enterprise databases and analytics platforms rely heavily on memory performance to deliver responsive query execution and data processing. By allowing large datasets to reside in memory, the Samsung M393A4K40CB2-CTD7Q category reduces disk I/O dependency and accelerates application performance. This capability is particularly valuable for in-memory databases, real-time analytics engines, and business intelligence platforms that process large volumes of data under tight latency constraints.

Professional Workstations and Compute Nodes

In addition to traditional servers, this memory category is well suited for high-end professional workstations and compute nodes used in engineering, scientific research, and digital content creation. Applications such as simulation, modeling, and rendering benefit from the stability and error correction features of ECC registered memory. The Samsung M393A4K40CB2-CTD7Q category ensures consistent results during long computational tasks, reducing the risk of memory-related errors that could compromise output accuracy.

Infrastructure Scalability and Future Readiness

The scalability offered by high-capacity RDIMM modules enables organizations to design systems that can adapt to future workload growth. By deploying 32GB memory modules, IT teams can expand total system memory incrementally as demands increase. This flexibility supports evolving application requirements, cloud expansion initiatives, and long-term digital transformation strategies without frequent hardware refresh cycles.

Enterprise Memory Investment Protection

Enterprise memory investments are evaluated not only on performance but also on longevity and reliability. The Samsung M393A4K40CB2-CTD7Q category is designed to deliver consistent value throughout the system lifecycle, reducing replacement frequency and minimizing downtime risks. Its proven track record in enterprise deployments makes it a trusted component for organizations seeking stable and predictable infrastructure performance across multiple years of operation.