M393A4K40BB2-CTD Samsung 32GB 2666Mhz PC4-21300 Cl19 Ecc DDR4 SDRAM RAM

Highlights of Samsung M393A4K40BB2-CTD 32GB DDR4 Memory

The Samsung M393A4K40BB2-CTD is a high-performance 32GB DDR4 RDIMM memory module, designed for enterprise servers and professional computing environments. With ECC error correction, registered architecture, and optimized latency, this memory module ensures reliable and stable performance for critical workloads.

General Information

• Manufacturer: Samsung
• Part Number: M393A4K40BB2-CTD
• Product Type: Server Memory Module
• Memory Interface: DDR4 2666MT/s PC4-21300

Technical Specifications

• Total Capacity: 32GB
• Module Quantity: 1 x 32GB
• Rank Structure: Dual Rank
• Memory Speed: 2666 MT/s
• Bus Rating: DDR4-2666 / PC4-21300
• CAS Latency: CL19
• Memory Technology: DDR4 SDRAM
• Error Correction: ECC (Error-Correcting Code)
• Signal Processing: Registered

Physical Characteristics

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

Compatibility

Supported Server Platforms

• Dell PowerEdge servers compatible with DDR4 ECC RDIMM
• HPE ProLiant Gen9, Gen10, and Gen11 servers
• Lenovo ThinkSystem and System x servers
• Supermicro X10, X11, and X12 motherboard platforms
• IBM and other enterprise-class server systems

Processor Compatibility

• Intel Xeon E5-2600 v3 and v4 processors
• Intel Xeon Scalable processors (Bronze, Silver, Gold, Platinum)
• AMD EPYC 7001, 7002, and 7003 series processors

Overview of Samsung M393A4K40BB2-CTD DDR4 2666MT/s Ram

The Samsung M393A4K40BB2-CTD 32GB DDR4 2666MT/s PC4-21300 CL19 ECC SDRAM Registered RDIMM memory module represents a high-performance enterprise memory category specifically designed for servers, data centers, and mission-critical computing environments. This category is engineered for reliability, data integrity, and sustained performance, making it an essential component for workloads that require continuous operation, high availability, and predictable behavior under heavy computational demands. Unlike consumer-grade memory, this category focuses on stability, compatibility, and long-term endurance.

Registered DIMM Architecture

Registered DIMMs (RDIMMs) are a defining feature of this memory category. They include a register between the memory controller and DRAM chips that buffers electrical signals, reducing the load on the memory controller. This allows multiple high-capacity memory modules to be installed in a single channel or across multiple channels without compromising stability. RDIMM technology is particularly advantageous in multi-socket server configurations where maintaining signal integrity is critical.

Signal Integrity and Performance Stability

The inclusion of a register ensures that electrical signals are accurately transmitted to each DRAM chip, minimizing timing skew and reducing the potential for data errors. This category emphasizes reliability and predictable operation, enabling enterprise servers to maintain consistent performance even when all memory slots are populated. The Samsung M393A4K40BB2-CTD demonstrates robust electrical design, supporting high-performance platforms with full channel utilization.

Load Balancing Across Memory Channels

By distributing electrical load and buffering commands and addresses, RDIMM modules enhance overall system reliability. This allows enterprise servers to scale memory capacities efficiently without impacting latency or causing signal degradation, which is essential for high-availability systems, virtualization clusters, and large-scale cloud environments.

DDR4 SDRAM Technology and PC4-21300 Performance Metrics

DDR4 SDRAM underpins this memory category, offering higher data transfer rates, lower power consumption, and greater density than previous generations. Operating at 2666MT/s, the Samsung M393A4K40BB2-CTD module delivers PC4-21300 bandwidth, providing sustained memory throughput for demanding enterprise workloads. This speed class ensures that memory-intensive applications such as database management, virtualization, and large-scale computation operate with minimal bottlenecking. The focus of this category is on predictable, continuous performance rather than peak burst performance.

CAS Latency CL19 and Timing Reliability

The CL19 CAS latency specification of this memory category balances access speed with operational reliability. Enterprise workloads prioritize consistent latency over extremely low access times, as predictable timing is essential for server applications, virtual machine scheduling, and database transactions. The Samsung M393A4K40BB2-CTD module provides stable latency under sustained high-load conditions, reducing the risk of performance variability.

Bandwidth Across Multi-Core Processors

Modern server CPUs often feature numerous cores and multiple memory channels. Modules in this category ensure balanced bandwidth distribution, minimizing contention and improving data access efficiency. This results in enhanced overall system throughput and better performance for memory-intensive applications such as virtualization platforms, ERP systems, and analytics engines.

(ECC) Functionality and Data Protection

ECC memory is a critical characteristic of this category, providing real-time detection and correction of single-bit errors. The Samsung M393A4K40BB2-CTD integrates ECC logic at the hardware level, protecting against data corruption and reducing the risk of system crashes or downtime. This is essential for enterprise environments where data integrity is a priority, including financial services, healthcare systems, and cloud computing platforms. Continuous ECC protection allows servers to operate without interruption, ensuring business-critical applications maintain their integrity and service availability over extended periods of operation.

System Reliability and High Availability

Modules in this category increase server reliability by preventing memory-related failures. ECC functionality minimizes unplanned downtime, reduces maintenance windows, and enhances fault tolerance, making it an indispensable component for 24/7 operational environments. Enterprise platforms often feature error logging for both corrected and uncorrected memory errors, supporting predictive maintenance strategies. This category is fully compatible with such monitoring systems, allowing administrators to replace memory proactively before it impacts system performance or stability, further enhancing operational continuity.

Physical Form Factor and Mechanical Design Considerations

The Samsung M393A4K40BB2-CTD module adheres to the 288-pin RDIMM form factor standard for DDR4 enterprise memory. This standardized form factor ensures reliable electrical connections, secure installation, and compatibility with a wide range of server motherboards, including rack-mounted, tower, and blade servers. Durability is critical for enterprise memory. Modules in this category are designed to withstand thermal cycling, vibration, and airflow variations within dense server racks while maintaining electrical and mechanical integrity over long-term operation.

Build Quality and Component Selection

Operating at a nominal voltage of 1.2V, this memory category produces less heat and consumes less power than previous DDR generations. Efficient thermal performance ensures stable operation even in high-density server environments and contributes to overall data center energy efficiency. High-quality PCB materials and precise manufacturing processes ensure the long-term stability and reliability of modules in this category. The Samsung M393A4K40BB2-CTD module reflects enterprise-grade engineering standards, minimizing failure rates and supporting extended operational lifespans.

Across Enterprise Server Platforms

This memory category is compatible with a wide array of enterprise server platforms that support DDR4 ECC Registered memory. It integrates seamlessly with multi-socket servers, virtualization platforms, and high-performance compute clusters. Samsung’s rigorous OEM qualification ensures consistent functionality and reliability across validated hardware platforms.

Automatic BIOS and Firmware Configuration

Enterprise server BIOS and firmware can automatically recognize RDIMM modules and configure appropriate voltage, frequency, and timing settings. Modules in this category comply with SPD (Serial Presence Detect) standards, simplifying deployment, reducing configuration errors, and ensuring immediate operational readiness. Compliance with JEDEC standards ensures modules maintain predictable behavior through platform firmware updates. The Samsung M393A4K40BB2-CTD remains compatible with long-term server lifecycles, supporting sustained performance and stability for extended deployments.

Scalability and Memory Expansion

Scalability is a key advantage of this memory category. With 32GB per module, administrators can incrementally populate server memory channels to meet current workload demands while planning for future growth. Multi-socket server configurations can achieve capacities of hundreds of gigabytes or more without compromising latency or reliability.

Cloud Computing Applications

Memory-intensive virtualization environments benefit from the higher capacity and ECC protection offered by this category. Increased module density supports higher virtual machine counts and better resource allocation, ensuring stable operation of cloud infrastructures, private clouds, and containerized environments. Applications that rely on in-memory processing, including large databases and caching systems, require reliable and high-capacity memory. This category provides the performance and stability needed to ensure data integrity and fast access to memory-intensive workloads, supporting critical enterprise applications and real-time analytics.

Manufacturing Quality and Validation

Samsung implements rigorous quality assurance procedures for this memory category, including chip-level testing, module burn-in, and performance validation. Each module meets strict enterprise reliability standards before deployment, ensuring consistent operation across multiple servers. Consistency across production batches is a hallmark of this category, enabling administrators to maintain homogeneous memory configurations in large-scale deployments and reducing the risk of compatibility issues.

JEDEC Industry Standards

Modules in this category adhere to JEDEC standards, ensuring interoperability with a wide range of server platforms and predictable performance under enterprise workloads. Standardized specifications support long-term compatibility and ease of integration. Enterprise environments often require long-term availability of memory modules for maintenance, expansion, and replacement. This category ensures consistent availability of identical or compatible modules, supporting IT infrastructure stability and simplifying asset management.

Enterprise Applications and Use Cases

The Samsung M393A4K40BB2-CTD memory category is suitable for a wide range of enterprise applications, including transactional systems, ERP platforms, CRM systems, and virtualization hosts. Modules in this category provide stable memory performance under concurrent access and intensive workloads.

High-Availability Financial Systems

Financial applications require uninterrupted uptime and robust memory error correction. ECC RDIMM modules in this category prevent data corruption, ensuring accurate transaction processing and continuous operation of critical financial systems. Scientific simulations, engineering workloads, and large-scale analytics benefit from the capacity, ECC protection, and reliability of this memory category. Error-free memory ensures accurate computational results and long-term stability in high-performance computing scenarios.

Market Positioning Within DDR4 Enterprise Memory

Within the DDR4 enterprise memory market, the Samsung M393A4K40BB2-CTD module represents a mature, reliable, and widely adopted solution. It balances performance, capacity, and efficiency, making it suitable for diverse server platforms and deployment scenarios. Although DDR5 memory is emerging, DDR4 modules like the M393A4K40BB2-CTD remain highly relevant due to extensive platform support, proven reliability, and cost-effectiveness. Enterprises with existing DDR4 infrastructure can expand memory capacity without a full platform upgrade.

Strategic Value for Enterprise IT Planning

This category allows enterprises to extend server lifespans and improve system performance through incremental memory upgrades. The combination of 32GB capacity, ECC protection, and energy-efficient operation makes it a cost-effective choice for large-scale deployments and data center optimization. The Samsung M393A4K40BB2-CTD memory category supports long-term IT planning by providing predictable performance, broad platform compatibility, and sustained operational reliability. Its design emphasizes the core principles of enterprise memory: stability, scalability, and continuous operational value, making it a key component of modern server memory infrastructure.