M393A4G43CB4-CWEGY Samsung 32GB 3200MBPS PC4-25600 CL22 Dual Rank 1.2v DDR4 SDRAM 288-Pin RDIMM Memory

Overview of the Samsung 32GB DDR4 RDIMM Memory

The Samsung M393A4G43CB4-CWEGY is a premium-grade 32GB DDR4 SDRAM memory module specially designed for enterprise servers and professional workstations. With advanced ECC protection and registered signal processing, this RDIMM delivers excellent reliability, stability, and speed for mission-critical computing environments.

General Information

Manufacturer Details

• Brand: Samsung
• Part Number: M393A4G43CB4-CWEGY
• Product Type: DDR4 SDRAM Memory Module
• Module Capacity: 32GB

Technical Specifications

Memory Performance

• Total Capacity: 32GB
• Memory Technology: DDR4 SDRAM
• Number of Modules: 1 x 32GB
• Bus Speed: DDR4-3200 / PC4-25600
• Operating Speed: 3200 Mbps

Compatibility

• Servers that support DDR4 RDIMM (Registered DIMM)
• Motherboards with ECC Registered memory support
• Intel Xeon Scalable processors (DDR4 platforms)
• AMD EPYC server platforms
• Enterprise rack servers and blade servers
• High-performance workstation motherboards supporting RDIMM

Data Protection and Signal

• Error Correction: ECC (Error Correcting Code)
• Signal Type: Registered (Buffered)
• Rank Configuration: Dual Rank

Form Factor

• Form Factor: 288-pin RDIMM
• Module Type: Registered DIMM

The Enterprise-Grade DDR4 RDIMM Memory

The Samsung M393A4G43CB4-CWEGY 32GB DDR4 ECC Registered RDIMM memory kit belongs to the enterprise-class category of server and workstation memory modules. This category is specifically designed for environments where stability, scalability, and long-term reliability are more important than raw consumer performance. Unlike desktop RAM, RDIMM memory such as this is engineered to support multi-processor servers, virtualization platforms, database systems, and cloud infrastructure where uptime and data integrity are critical.

This category focuses on DDR4 SDRAM technology combined with ECC (Error-Correcting Code) and registered buffering. These features work together to reduce system crashes, detect and correct memory errors automatically, and maintain consistent performance even under continuous workloads. The Samsung M393A4G43CB4-CWEGY fits perfectly into this category as a 32GB, PC4-25600, CL22, dual-rank RDIMM operating at 1.2V.

DDR4 SDRAM in Server Memory

DDR4 and Efficiency

DDR4 SDRAM represents the fourth generation of Double Data Rate memory, offering improved bandwidth, reduced voltage, and higher capacity compared to DDR3. In the server memory category, DDR4 provides the foundation for handling large datasets, multiple virtual machines, and high-throughput computing tasks. The 3200MBPS (PC4-25600) speed rating ensures fast data transfer between the memory and CPU, which is essential in enterprise workloads such as real-time analytics and virtualization.

Benefits of DDR4 in Data Centers

DDR4 memory consumes less power thanks to its 1.2V operating voltage, making it ideal for data centers where power efficiency directly affects operational costs. It also supports higher density modules, allowing system administrators to populate servers with larger total memory capacity without increasing the number of slots used.

ECC Registered Memory

ECC, or Error-Correcting Code, memory is a defining feature of server-class RAM. It can detect and correct single-bit memory errors automatically, preventing data corruption and system crashes. In mission-critical systems such as financial servers, healthcare systems, and cloud platforms, ECC memory is not optional—it is a necessity.

Registered (RDIMM)

Registered memory, also known as buffered memory, reduces the electrical load on the memory controller. It uses a register between the memory modules and the CPU, which stabilizes the signal and allows for more memory modules to be installed without sacrificing stability. This makes RDIMM memory ideal for servers that need large memory capacities and reliable long-term operation.

Stability in Multi-DIMM

When multiple memory modules are installed in a server, signal integrity becomes a challenge. RDIMM modules like the Samsung M393A4G43CB4-CWEGY maintain stability across multiple slots, ensuring that performance does not degrade even when the server is fully populated with memory.

The DDR4 PC4-25600 and 3200MBPS High-Speed Data

PC4-25600

PC4-25600 is the bandwidth classification for DDR4 memory running at 3200MBPS. This means the memory can transfer up to 25.6GB per second per module, which is essential for data-intensive applications.

Performance

High-speed memory directly impacts application performance in areas such as big data processing, in-memory databases, and high-frequency trading systems. Faster memory reduces latency and improves overall system responsiveness.

CL22 Latency Server Performance

CL22 refers to the CAS latency, which is the number of clock cycles the memory takes to respond to a request. While lower latency is generally better, server memory prioritizes stability and capacity over ultra-low latency. CL22 is a balanced choice for DDR4-3200 RDIMM modules, offering reliable performance for enterprise tasks.

Latency vs. Stability in Server Memory

In server environments, predictable and stable latency is more important than minimal latency. CL22 ensures consistent timing that aligns well with server CPUs and memory controllers, reducing the risk of timing-related issues.

Enterprise Workloads

Applications like ERP systems, transaction processing, and large-scale simulations benefit more from consistent memory behavior than from slightly faster but less stable configurations.

Dual Rank

A dual-rank memory module has two sets of memory chips that can be accessed independently. This allows the memory controller to interleave operations, improving overall data throughput.

Advantages of Dual Rank RDIMM

Dual-rank modules like the Samsung M393A4G43CB4-CWEGY provide better performance in many real-world workloads compared to single-rank modules, especially in multi-core and multi-threaded environments.

288-Pin RDIMM Form Factor

Standard for DDR4 Server Memory

The 288-pin form factor is the standard for DDR4 RDIMM modules. It ensures compatibility with modern server motherboards that support DDR4 memory.

Samsung as a Memory

Samsung is one of the world's leading manufacturers of memory chips and modules. Their server memory products are known for high quality, rigorous testing, and long-term reliability.

Use Cases

Virtualization and Cloud Computing

In virtualization environments, memory is often the most heavily utilized resource. The Samsung M393A4G43CB4-CWEGY supports high VM density and smooth operation across multiple guest systems.

Database Servers and In-Memory

Large databases and in-memory platforms like SAP HANA require fast, reliable, and high-capacity memory. DDR4 RDIMM modules with ECC ensure data integrity and performance.

High-Performance Computing (HPC)

HPC workloads such as scientific research, weather modeling, and financial simulations depend on consistent memory throughput and error-free operation, making ECC RDIMM memory a critical component.