M393A4K40CB2-CTD7Q Samsung 32GB DDR4 SDRAM ECC Reg RAM

Highlights of Samsung M393A4K40CB2-CTD7Q 32GB DDR4 Ram

The Samsung M393A4K40CB2-CTD7Q is a high-quality 32GB DDR4 ECC Registered (RDIMM) memory module built for enterprise servers and professional workstations. Designed to deliver reliable performance, data integrity, and system stability, this RAM is ideal for virtualization, cloud computing, and high-demand server applications.

General Information

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

Technical Specifications

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

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 PC4-21300

The Samsung M393A4K40CB2-CTD7Q 32GB DDR4 2666MHz PC4-21300 SDRAM 288-Pin RDIMM ECC Registered RAM represents a premium class of enterprise memory designed for high-performance servers, workstations, and data center environments. This category of memory modules is engineered to deliver high reliability, superior data integrity, and robust performance for mission-critical applications. Samsung’s proprietary DRAM architecture ensures that these modules meet rigorous standards for stability, longevity, and compatibility across a wide range of server platforms.

DDR4 SDRAM Technology and Performance

DDR4 SDRAM introduces significant improvements over its DDR3 predecessor, including higher clock speeds, lower power consumption, and enhanced memory bandwidth. The Samsung M393A4K40CB2-CTD7Q operates at 2666MHz with a PC4-21300 rating, providing a balance of speed and stability for modern enterprise workloads. The higher data rate ensures rapid data access, reduced latency, and improved overall system responsiveness, which is essential for virtualization, in-memory databases, and high-performance computing applications.

PC4-21300 Bandwidth

The PC4-21300 designation indicates a theoretical maximum data transfer rate of 21.3 GB/s per module. This bandwidth is crucial for high-demand enterprise applications that rely on fast, consistent memory throughput. Workloads such as virtualization, real-time analytics, ERP systems, and large database processing benefit directly from the high transfer speeds offered by this memory category. When multiple modules are installed in a multi-channel configuration, the cumulative memory bandwidth increases substantially, ensuring that the server processor is consistently supplied with data for processing.

High-Capacity 32GB Modules for Enterprise Workloads

The 32GB capacity of the Samsung M393A4K40CB2-CTD7Q module places it in the high-density memory category, enabling servers to accommodate large datasets and multiple virtual machines without exhausting DIMM slots. High-capacity modules are ideal for enterprise workloads that require substantial RAM, including in-memory database solutions, virtualization hosts, and high-performance computing nodes. By using 32GB RDIMM modules, organizations can maximize memory density per server while preserving room for future upgrades.

Dual-Rank x4 Organization for Enhanced Performance

The 2Rx4 configuration of the Samsung M393A4K40CB2-CTD7Q denotes a dual-rank memory module with x4 DRAM chips. Dual-rank memory improves performance by interleaving memory access between the two ranks, increasing memory-level parallelism and optimizing throughput for multi-threaded applications. This design is particularly effective in server environments running concurrent workloads or virtualization platforms with high memory demand. The x4 organization also supports advanced error correction features, such as Chipkill technology, which can recover from complete DRAM chip failures without impacting system operations. This makes the category highly suitable for critical enterprise workloads where uptime and data integrity are essential.

ECC Technology for Mission-Critical Reliability

Error-Correcting Code (ECC) functionality is a cornerstone of enterprise-class memory, and the Samsung M393A4K40CB2-CTD7Q category incorporates this feature to detect and correct single-bit memory errors in real-time. ECC ensures data integrity and prevents system crashes caused by memory errors, making it essential for environments where reliability and accuracy are paramount. ECC RDIMMs are indispensable in servers supporting financial applications, healthcare data systems, cloud infrastructure, and telecommunications equipment. The Samsung M393A4K40CB2-CTD7Q module category ensures continuous, error-free operation, thereby minimizing downtime and protecting critical information from corruption or loss.

Reliability and Availability in Enterprise Environments

Combining ECC with registered buffering, this memory category supports enhanced reliability, availability, and serviceability (RAS) features. These include memory mirroring, lockstep operation, and advanced error detection, which are vital for high-availability systems. The M393A4K40CB2-CTD7Q module contributes to predictable system behavior even under heavy load, reducing the risk of memory-related failures and improving overall infrastructure resilience. This enhanced reliability is particularly important for 24/7 operational environments where system uptime is critical and maintenance windows are limited. By minimizing the risk of unplanned downtime, organizations can maintain high service levels and ensure business continuity.

288-Pin RDIMM Form Factor

The 288-pin RDIMM form factor is standard for DDR4 registered memory, providing compatibility with a wide range of enterprise server and workstation platforms. The Samsung M393A4K40CB2-CTD7Q category adheres to JEDEC specifications, ensuring seamless integration with Intel Xeon and AMD EPYC processors that support DDR4-2666 RDIMM memory. Registered DIMMs are specifically designed for servers and are not interchangeable with unbuffered desktop memory modules. This category ensures that system designers and IT administrators can populate multi-channel server architectures with predictable results, enabling higher memory capacities and consistent performance across all populated DIMM slots.

Platform Flexibility and Scalability

The Samsung M393A4K40CB2-CTD7Q category is compatible with a broad spectrum of enterprise-grade motherboards and server systems. This flexibility allows organizations to standardize memory across diverse server platforms, simplifying inventory management and reducing operational complexity. The module’s compliance with JEDEC standards ensures long-term compatibility and ease of deployment across both current and future server generations. Such compatibility also enables seamless scaling of memory capacity in multi-socket configurations, allowing IT teams to adapt to evolving workload demands without major system redesigns or costly memory replacements.

Samsung Manufacturing Quality and SDRAM Innovation

Samsung is recognized globally for its leadership in DRAM manufacturing, and the M393A4K40CB2-CTD7Q memory category exemplifies this expertise. Each module is built with Samsung’s proprietary DRAM chips, ensuring high-quality components, precise electrical characteristics, and consistent performance. Samsung’s vertical integration allows for rigorous quality control, resulting in reliable memory that meets enterprise-grade expectations. Extensive validation testing, including compatibility, electrical, and thermal stress testing, ensures that these modules perform reliably under the demanding conditions of data centers and mission-critical servers.

Data Center Readiness

The M393A4K40CB2-CTD7Q category is widely OEM-certified, making it suitable for deployment in branded enterprise servers and workstations. OEM certification guarantees that the modules meet stringent platform requirements, including electrical, thermal, and performance specifications, and operate reliably within manufacturer-recommended tolerances. Data center operators value this certification because it ensures consistent system performance, reduces risk of compatibility issues, and simplifies support and maintenance processes. The proven reliability of this memory category underpins its widespread adoption in enterprise IT environments.

Thermal Stability and Continuous Workload Performance

Enterprise memory must operate efficiently under continuous load and elevated ambient temperatures. The Samsung M393A4K40CB2-CTD7Q category is engineered to maintain thermal stability through high-quality component selection and optimized module design. Effective heat dissipation ensures that modules perform reliably even in densely populated server racks. Maintaining stable temperatures is crucial for preventing performance degradation and extending module lifespan. This category is designed to endure 24/7 operation, ensuring predictable behavior under sustained workloads without throttling or thermal-related faults.

24/7 Operational Endurance

Servers in enterprise environments often run without interruption, making endurance a critical attribute. The Samsung M393A4K40CB2-CTD7Q modules are built to sustain continuous operation while maintaining performance and data integrity. This design reduces the frequency of system maintenance and mitigates the risk of unexpected downtime, supporting mission-critical business functions reliably.

Cloud Workload

Virtualization environments place heavy demands on system memory. The 32GB DDR4 RDIMM modules in the Samsung M393A4K40CB2-CTD7Q category enable higher virtual machine density by providing large, reliable memory pools. These modules support seamless multi-VM operation, allowing cloud and enterprise infrastructure providers to optimize resource allocation and ensure consistent performance. Memory errors in virtualized workloads can have cascading effects on multiple virtual machines, but ECC RDIMM memory mitigates this risk, ensuring stability and continuity of service. The module category’s high capacity and reliability make it a preferred choice for large-scale virtualization deployments.

Database, Analytics, and High-Performance Computing

Enterprise databases and analytics platforms rely heavily on memory bandwidth and capacity. By allowing extensive datasets to reside in memory, the Samsung M393A4K40CB2-CTD7Q modules reduce dependency on slower storage systems, resulting in faster query execution and improved transaction throughput. High-performance computing workloads also benefit from low-latency memory access and high stability, enabling accurate and efficient data processing in computational simulations, modeling, and research applications.

Professional Workstation Applications

In addition to server environments, this memory category is ideal for professional workstations used in engineering, scientific research, and creative industries. ECC RDIMM memory ensures that long computational tasks, rendering operations, and simulations complete reliably without memory-induced errors. This stability is critical in environments where data accuracy and workflow consistency directly impact productivity and outcomes.

Operational Cost Benefits

DDR4 technology operates at lower voltage levels than previous memory generations, contributing to reduced power consumption across the IT infrastructure. The Samsung M393A4K40CB2-CTD7Q category leverages these efficiencies to lower operational costs and reduce heat generation in server environments. Efficient energy usage also simplifies thermal management, allowing data centers to optimize cooling and achieve sustainable operations. Improved power efficiency is particularly valuable in large-scale deployments, where even marginal energy savings per module can result in significant reductions in total power usage and operational expenditure.

Infrastructure Scalability and Future-Proofing

The 32GB module capacity and RDIMM architecture of the Samsung M393A4K40CB2-CTD7Q category support scalable infrastructure design. IT teams can expand memory capacity as workload demands increase, ensuring systems remain future-ready without costly hardware replacements. This flexibility supports long-term strategic planning for data growth, virtualization expansion, and high-performance computing needs. By leveraging high-density, reliable memory modules, organizations can maximize system utilization and extend the useful lifespan of servers, providing both performance and cost-efficiency benefits across enterprise IT deployments.

Enterprise Memory Investment Protection

Enterprise memory investments are evaluated not only on performance but also on reliability, longevity, and compatibility. The Samsung M393A4K40CB2-CTD7Q modules are designed to deliver consistent performance throughout the system lifecycle, reducing replacement frequency and minimizing risks of memory-related failures. Their robust construction and OEM validation ensure dependable operation across multiple years of enterprise service. This memory category protects organizational investments by combining high capacity, error correction, and registered buffering, ensuring that critical workloads run without interruption and data integrity is maintained over time.