M321R8GA0EB2-CWM Samsung 64GB 5600MBPS PC5-44800 2rx4 Ecc Registered 1.1v CL46 DDR5 SDRAM 288-Pin RDIMM Memory

Product Overview of the DDR5 Server Memory Kit

The Samsung M321R8GA0EB2-CWM is a premium-grade 64GB DDR5 SDRAM memory module engineered for enterprise-class servers and professional workstations. Built to deliver exceptional speed, stability, and efficiency, this registered DIMM is ideal for modern computing environments that demand reliability and scalability.

General Information

Manufacturer Details

• Brand: Samsung
• Part Number: M321R8GA0EB2-CWM
• Product Type: DDR5 SDRAM Memory Module
• Form Factor: 288-Pin RDIMM

Technical Specifications

Memory Capacity and Structure

• Total Storage: 64GB
• Rank: 2Rx4 Dual Rank Design

Memory Speed and Performance

• Bus Speed: DDR5-5600 / PC5-44800
• Peak Bandwidth: 5600MB/s
• CAS Latency: CL46

Compatibility

System Types

• Enterprise-grade servers
• Workstations with DDR5 RDIMM support
• Data center and cloud infrastructure platforms

This memory module is compatible only with systems that explicitly support:

• DDR5 Registered DIMM (RDIMM)
• ECC-enabled memory architecture
• 288-pin DDR5 memory slots

The Enterprise-Grade DDR5 RDIMM Memory for Modern Servers

The Samsung M321R8GA0EB2-CWM 64GB DDR5 RDIMM represents a high-performance, enterprise-class memory solution designed specifically for modern server and workstation platforms. As part of the PC5-44800 generation, this module delivers an effective data rate of 5600MBPS, supporting the latest CPU architectures that demand extremely high bandwidth, low latency, and rock-solid stability.

This category includes professional-grade memory modules built to handle mission-critical workloads such as virtualization, cloud computing, artificial intelligence, big data analytics, and high-performance computing (HPC). Unlike consumer RAM, DDR5 RDIMM memory like the Samsung M321R8GA0EB2-CWM is engineered for continuous operation in data centers where uptime, error prevention, and scalability are essential.

The DDR5 Technology Server Performance

From DDR4 to DDR5

DDR5 marks a fundamental evolution over DDR4 memory technology. While DDR4 focused on incremental speed improvements, DDR5 introduces architectural changes that significantly enhance bandwidth, efficiency, and scalability. The Samsung M321R8GA0EB2-CWM leverages these improvements by operating at 5600MBPS, offering dramatically higher throughput compared to previous generations.

DDR5 features dual independent 32-bit subchannels per module instead of a single 64-bit channel. This allows for better parallelism, reduced latency, and more efficient memory access patterns, which are vital for multi-core server processors handling thousands of simultaneous operations.

Understanding RDIMM and ECC for Enterprise

Registered DIMM (RDIMM)

Registered DIMM (RDIMM) modules include a register between the memory controller and DRAM chips. This register buffers command and address signals, allowing systems to support more memory modules per channel and higher total memory capacities without sacrificing stability.

The Samsung M321R8GA0EB2-CWM is a 288-pin RDIMM, making it compatible with enterprise server motherboards that support registered memory. This makes it unsuitable for consumer desktops but perfect for professional environments.

Error-Correcting Code (ECC)

ECC memory detects and corrects single-bit memory errors in real time. In mission-critical systems, even a minor memory error can lead to data corruption, system crashes, or security vulnerabilities. ECC ensures data accuracy and system reliability, especially in servers running continuously for months or years.

This Samsung DDR5 RDIMM incorporates advanced ECC mechanisms, making it ideal for financial systems, scientific research, healthcare databases, and enterprise virtualization.

2Rx4 Memory

Benefits of Dual-Rank

Dual-rank memory modules like this one allow the memory controller to interleave access between ranks, improving throughput and reducing latency. This is particularly beneficial in multi-socket servers where memory access patterns are complex and heavily parallelized.

Performance PC5-44800 DDR5 Memory

Speed Advantages

PC5-44800 corresponds to a theoretical maximum bandwidth of 44.8GB/s per module. With a speed rating of 5600MBPS, the Samsung M321R8GA0EB2-CWM delivers rapid data transfer that significantly boosts application responsiveness and system throughput.

This high bandwidth is essential for data-intensive applications such as machine learning, in-memory databases, real-time analytics, and large-scale virtualization platforms.

Latency CL46

The module features a CAS Latency of CL46, which is well-optimized for DDR5’s high frequencies. While CL values appear higher than DDR4, the overall access time is much lower due to the increased clock speeds.

This balance ensures that the module maintains low effective latency while maximizing throughput, which is crucial for server workloads that depend on fast and predictable memory access.

Use Cases

Data Centers

In cloud environments, memory performance directly affects virtual machine density, responsiveness, and cost efficiency. High-capacity 64GB DDR5 RDIMMs allow operators to maximize memory per server, reducing hardware footprint while improving service quality.

Comparison with Other DDR5 Server Memory

RDIMM vs UDIMM

Unbuffered DIMMs (UDIMMs) are used in desktops and entry-level workstations, while RDIMMs like this one are essential for enterprise servers. RDIMMs support higher capacities and greater stability, making them the preferred choice for mission-critical systems.

RDIMM vs LRDIMM

Load-Reduced DIMMs (LRDIMMs) offer even higher capacities but at greater cost and complexity. RDIMMs such as the M321R8GA0EB2-CWM provide an ideal balance between capacity, performance, and affordability for most enterprise use cases.

The Samsung M321R8GA0EB2-CWM DDR5 RDIMM Memory

Optimized for Enterprise Workloads

This category of memory is engineered specifically for demanding workloads, providing unmatched stability, scalability, and speed in professional environments.

Rack Servers and Blade Systems

This DDR5 RDIMM memory integrates seamlessly into rack-mounted and blade server architectures, supporting high-density deployments without compromising performance or reliability.

DDR5 Server Memory

The Samsung M321R8GA0EB2-CWM 64GB 5600MBPS PC5-44800 DDR5 ECC Registered RDIMM represents a benchmark in enterprise memory technology. It embodies the shift toward faster, more efficient, and more reliable memory solutions designed to meet the demands of next-generation computing.

This category of memory is essential for organizations seeking to build or upgrade infrastructure capable of supporting modern workloads with confidence, performance, and long-term scalability.