M393A2K43DB2-CTD Samsung 16GB 2666MT/s PC4-21300 Cl19 ECC DDR4 SDRAM Memory

Samsung 16GB 2666MHz Memory

The Samsung M393A2K43DB2-CTD is a High-Performance 16GB DDR4 SDRAM server memory module engineered for reliability and speed. Designed with advanced ECC technology and dual-rank architecture, it ensures seamless multitasking and dependable data integrity for enterprise environments.

General Information

• Brand Name: Samsung
• Part Number: M393A2K43DB2-CTD
• Product Type: 16GB DDR4 Registered DIMM Memory

Technical Specifications

• Memory Size: 16GB single module
• Technology Type: DDR4 SDRAM
• Speed Rating: 2666 MT/s (PC4-21300)
• Latency: CL19 for optimized responsiveness
• Architecture: Dual Rank X8 for enhanced throughput
• Error Correction: ECC support for secure data handling
• Signal Control: Registered design for stable server operations

Physical Attributes

• 288-Pin RDIMM layout for server compatibility
• Voltage Requirement: 1.2V for energy-efficient performance

Compatibility

• Optimized for enterprise-grade servers and workstations
• Supports high-demand applications including virtualization and database management

Samsung 16GB PC4-21300 Memory Overview

The category encompassing Samsung M393A2K43DB2-CTD 16GB 2666MT/s PC4-21300 ECC Registered DDR4 RDIMM server memory modules represents a foundational layer of modern enterprise computing environments where stability, predictability, and sustained performance are essential. This class of server memory is engineered specifically for data centers, virtualization hosts, enterprise servers, and scalable compute platforms that operate under continuous load. Unlike consumer-grade memory, DDR4 ECC Registered DIMMs are designed with architectural enhancements that prioritize data integrity, electrical stability, and compatibility with multi-socket server platforms. The presence of error-correcting code logic, registered signal buffering, and strict adherence to JEDEC specifications ensures that these memory modules deliver consistent results across a wide range of professional workloads. Server memory modules in this category are widely deployed in environments where uptime is non-negotiable and where even minor data corruption could have cascading effects on applications, databases, or virtual machines.

DDR4 Architecture

DDR4 SDRAM technology forms the backbone of this server memory category, offering significant improvements over earlier generations in terms of power efficiency, signaling integrity, and scalability. Operating at a nominal voltage of 1.2V, DDR4 server memory modules reduce overall power consumption per gigabyte while enabling higher memory densities within the same physical footprint. The Samsung M393A2K43DB2-CTD module operates at 2666MT/s, aligning with the PC4-21300 standard that balances throughput and latency for enterprise workloads. This speed tier is particularly relevant for servers built around Intel Xeon Scalable and compatible AMD EPYC platforms that support DDR4-2666 memory frequencies. Within this category, memory modules are validated to operate continuously at their rated speed under sustained load, ensuring that performance does not degrade during extended operation.

Registered DIMM

A defining characteristic of this category is the use of registered DIMM architecture, commonly referred to as RDIMM. Registered memory incorporates a register between the memory controller and the DRAM chips, which buffers command and address signals. This buffering reduces the electrical load on the memory controller, allowing servers to populate more memory slots per channel without compromising stability. In multi-DIMM configurations, RDIMMs are essential for maintaining signal integrity across complex motherboard traces. The Samsung M393A2K43DB2-CTD 16GB RDIMM module is specifically engineered to meet the electrical requirements of server motherboards that mandate registered memory. This category is incompatible with desktop systems and unbuffered DIMM slots, reinforcing its specialization for professional platforms. By isolating the memory controller from direct chip loading, RDIMM-based server memory enables higher total memory capacities, making it suitable for virtualization clusters, database servers, and in-memory analytics platforms.

Error Correcting Code

Error Correcting Code functionality is central to this category of server memory modules. ECC memory detects and corrects single-bit memory errors in real time, preventing silent data corruption that could otherwise compromise system reliability. In enterprise environments where data consistency is critical, ECC protection is a mandatory requirement rather than an optional feature. The Samsung M393A2K43DB2-CTD module integrates ECC logic at the hardware level, working in conjunction with supported server chipsets to ensure continuous data validation. This category of memory is particularly important for applications such as financial systems, scientific simulations, enterprise resource planning platforms, and mission-critical databases. By correcting errors transparently, ECC registered memory helps maintain system uptime and reduces the risk of application crashes or corrupted datasets.

Performance

Memory rank configuration plays a significant role in determining how a server accesses and interleaves memory operations. The dual-rank x8 design found in this category offers a balanced approach to performance and compatibility. Dual-rank modules effectively present two logical memory ranks to the memory controller, enabling improved memory interleaving and potentially higher throughput compared to single-rank designs under certain workloads. The x8 chip organization further enhances reliability by aligning with ECC correction schemes that are optimized for x8 DRAM layouts. This configuration is preferred in enterprise servers because it provides robust error detection capabilities while maintaining compatibility with a wide range of server motherboards.

Latency

CAS latency is a critical parameter in server memory performance, particularly for workloads that involve frequent random memory access. This category of DDR4-2666 RDIMM modules typically operates at a CL19 latency, which represents a carefully balanced timing profile optimized for stability and throughput rather than aggressive consumer-grade tuning. In enterprise systems, predictable latency behavior is often more valuable than marginal reductions in access time. The CL19 timing of the Samsung M393A2K43DB2-CTD module aligns with JEDEC standards for DDR4-2666 ECC registered memory, ensuring broad compatibility and consistent performance across supported platforms. This category prioritizes adherence to standardized timing profiles to minimize the risk of incompatibility or instability when scaling memory capacity.

Thermal

Server memory modules in this category are designed to operate continuously under elevated thermal conditions typical of data center environments. The physical construction of DDR4 RDIMMs, including high-quality PCB materials and carefully selected DRAM components, contributes to effective heat dissipation and long-term durability. While these modules do not typically include decorative heat spreaders found in consumer memory, their design is optimized for airflow patterns within server chassis.

Power Efficiency

Power efficiency is a defining concern in enterprise memory deployment, particularly when scaling across hundreds or thousands of servers. DDR4 technology’s reduced operating voltage contributes significantly to lowering overall system power draw. This category of memory modules leverages optimized silicon manufacturing processes to minimize leakage current and reduce heat generation. By operating at 1.2V, the Samsung M393A2K43DB2-CTD server memory module supports energy-efficient data center operations without sacrificing performance. Over the lifecycle of a server, these efficiency gains translate into measurable cost savings and improved thermal management.

Compatibility

This category of 16GB DDR4-2666 ECC registered RDIMM memory is designed to integrate seamlessly with a wide array of enterprise server platforms. Compatibility is governed by strict adherence to JEDEC standards, ensuring that these modules function correctly in supported Intel and AMD server architectures. The Samsung M393A2K43DB2-CTD module is commonly used in servers from leading manufacturers where registered ECC DDR4 memory is required. This category supports flexible memory population strategies, allowing system administrators to scale memory capacity incrementally while maintaining consistent performance characteristics.

Scalability

Virtualization platforms place unique demands on system memory, requiring both capacity and reliability to support multiple virtual machines concurrently. This category of server memory is particularly well-suited to virtualization hosts, where dual-rank RDIMM modules enable efficient memory interleaving and stable operation under mixed workloads. The 16GB capacity point represented by the Samsung M393A2K43DB2-CTD module offers a versatile building block for scaling memory in virtualization clusters. Administrators can deploy multiple identical modules to achieve balanced channel population, improving overall system efficiency and ensuring predictable performance for hosted workloads.

Use Cases

The category represented by 16GB DDR4-2666 ECC registered RDIMM server memory modules spans a wide range of enterprise use cases. Database servers benefit from ECC protection and predictable latency, ensuring data consistency during high transaction volumes. Application servers rely on stable memory performance to deliver responsive services to users, while analytics platforms depend on reliable memory throughput for processing large datasets. In high-performance computing and scientific research environments, this category of memory supports sustained computational workloads that require both accuracy and endurance. The Samsung M393A2K43DB2-CTD module provides the necessary balance of speed, capacity, and reliability to support these demanding applications.

Enterprise

Beyond general-purpose compute servers, this category of server memory is also deployed in enterprise storage arrays and networking appliances. These systems rely on ECC registered memory to manage caching, metadata processing, and control-plane operations. Stability and error correction are especially critical in storage environments where data integrity must be preserved at all times. The use of standardized DDR4 RDIMM modules simplifies maintenance and ensures that memory upgrades do not introduce compatibility risks. Samsung’s adherence to strict quality standards reinforces the suitability of this category for infrastructure-level deployments.