M321R8GA0EB0-CWMKJ Samsung 64GB DDR5 5600MBPS PC5-44800 2rx4 Ecc Registered 1.1v CL46 SDRAM 288-Pin RDIMM Memory

Product Overview of the Samsung M321R8GA0EB0-CWMKJ RAM

The Samsung M321R8GA0EB0-CWMKJ is a high-performance 64GB DDR5 SDRAM memory module designed for enterprise servers and professional workstations. Built with advanced DDR5 technology, this RDIMM module delivers faster data transfer rates, improved power efficiency, and enhanced system stability for mission-critical environments.

General Information

• Manufacturer: Samsung
• DELL Part Number: M321R8GA0EB0-CWMKJ
• Product Name: 64GB DDR5 SDRAM Memory Module

Technical Specifications

Memory Capacity & Configuration

• Total Capacity: 64GB
• Rank Structure: 2Rx4

Performance Details

• Memory Type: DDR5 SDRAM
• Bus Speed: 5600MBPS (DDR5-5600 / PC5-44800)
• CAS Latency: CL46

Reliability & Signal Processing

• Data Integrity Check: ECC (Error Correction Code)
• Signal Processing: Registered (RDIMM)
• Operating Voltage: 1.1V

Compatibility

This Samsung DDR5 64GB ECC Registered memory module is specifically engineered for use in enterprise-grade servers and workstations. It is not compatible with standard desktop or laptop systems.

• Servers and workstations that support DDR5 RDIMM memory
• Systems with ECC Registered memory requirements
• Enterprise servers from brands such as Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro (model-dependent)

The Enterprise DDR5 RDIMM Memory Modules SSD

The Samsung M321R8GA0EB0-CWMKJ 64GB DDR5 5600MBPS PC5-44800 2Rx4 ECC Registered RDIMM memory module belongs to the high-performance enterprise server memory category designed for data centers, cloud infrastructure, virtualization hosts, and mission-critical computing environments. This category focuses on reliability, scalability, signal integrity, and sustained throughput rather than consumer-oriented overclocking features. DDR5 RDIMM memory represents a major generational step forward from DDR4, offering higher bandwidth per module, improved power efficiency, and advanced error correction support suitable for 24/7 workloads.

Within the server memory ecosystem, DDR5 ECC Registered DIMMs are specifically engineered to operate in multi-socket systems where stability, predictable latency, and long-term uptime are essential. This category is commonly used in rack servers, blade servers, tower servers, and enterprise workstations that demand large memory capacities and consistent performance under heavy parallel processing loads.

The Samsung Server Memory

Samsung is one of the world’s leading manufacturers of DRAM, producing memory chips and modules that are widely adopted by original equipment manufacturers and hyperscale data centers. The Samsung M321R8GA0EB0-CWMKJ memory module reflects enterprise-grade design principles, including strict binning, validation, and compliance with JEDEC standards. This category benefits from Samsung’s vertically integrated manufacturing process, where DRAM ICs, PCB layout, and module assembly are tightly controlled to ensure consistency and reliability.

Enterprise server memory categories prioritize long product lifecycles and firmware-level compatibility across multiple server platforms. Samsung DDR5 RDIMM modules are developed with compatibility matrices for leading CPU architectures and server chipsets, reducing the risk of incompatibility during large-scale deployments or phased hardware upgrades.

DDR5 Technology Advancements in Server Memory

DDR5 memory technology introduces significant architectural improvements compared to DDR4, and this category leverages those enhancements to support modern server workloads. DDR5 operates with dual 32-bit subchannels per DIMM, improving parallelism and reducing access contention. This design increases effective bandwidth and enhances performance in multi-core processors where memory access patterns are highly concurrent.

The Samsung M321R8GA0EB0-CWMKJ module operates at 5600MBPS (often expressed as 5600MT/s), placing it in the PC5-44800 performance class. This bandwidth level is ideal for data-intensive applications such as virtualization, in-memory databases, real-time analytics, and high-throughput transaction processing.

Improved Power at 1.1V

Operating at 1.1 volts, DDR5 RDIMM memory reduces overall power consumption compared to DDR4 modules that typically operate at higher voltages. In large data centers, even small reductions in per-module power usage can result in meaningful energy savings and lower thermal output. This category supports energy-efficient server designs while maintaining high performance levels.

ECC Registered Memory for Mission-Critical Reliability

Error Correcting Code (ECC) memory is a defining characteristic of this category. ECC technology detects and corrects single-bit memory errors and detects multi-bit errors, preventing data corruption that could otherwise cause system crashes or inaccurate computation results. In enterprise servers, where data integrity is paramount, ECC memory is considered essential.

Registered DIMMs (RDIMMs) incorporate a register between the memory controller and DRAM chips. This register buffers address and command signals, reducing electrical load on the memory controller and enabling support for higher memory capacities and more populated DIMM slots. The Samsung M321R8GA0EB0-CWMKJ 64GB module fits squarely within this category, supporting stable operation in densely populated server configurations.

2Rx4 Memory

The 2Rx4 configuration indicates that the memory module uses two ranks with x4 DRAM chips. This architecture is commonly used in high-capacity ECC RDIMM modules because it enhances error correction granularity and improves reliability. In this category, 2Rx4 designs are favored for enterprise systems where fault tolerance and signal integrity are more important than minimal latency differences.

High-Capacity 64GB Modules for Scalable Memory

The 64GB capacity of the Samsung M321R8GA0EB0-CWMKJ module addresses the growing memory demands of modern servers. This category enables system builders and IT administrators to scale total system memory into the hundreds of gigabytes or even terabytes, depending on motherboard and CPU support.

High-capacity memory modules reduce the number of DIMMs required to reach target memory capacities. This can improve airflow, simplify system design, and leave room for future upgrades. In virtualization and containerized environments, higher memory density per server allows more virtual machines or containers to run concurrently without performance degradation.

288-Pin RDIMM Form Factor

The 288-pin RDIMM form factor is standard for DDR5 server memory and is designed to fit into compatible server and workstation motherboards. This category is not interchangeable with UDIMM or SO-DIMM memory used in consumer desktops or laptops. Proper motherboard and CPU support for DDR5 ECC RDIMM is required.

Enterprise server platforms are designed to accommodate multiple 288-pin RDIMM slots, enabling high memory capacity and bandwidth scaling. The physical layout and pin configuration of DDR5 RDIMMs differ from DDR4, preventing accidental installation into incompatible systems.

Server Platform

This category is intended for server platforms that explicitly support DDR5 ECC Registered memory. Compatibility depends on CPU memory controllers, motherboard BIOS, and chipset capabilities. IT professionals typically consult server vendor documentation to ensure proper support for DDR5 RDIMM modules like the Samsung M321R8GA0EB0-CWMKJ.

Use Cases

The Samsung M321R8GA0EB0-CWMKJ DDR5 RDIMM module category supports a wide range of professional and enterprise use cases. These include data center servers, private cloud infrastructure, enterprise resource planning systems, scientific computing clusters, and content creation workstations that require large memory pools.

High-Performance

Scientific simulations, modeling, and research applications often rely on large datasets and parallel processing. The bandwidth and capacity offered by DDR5 64GB RDIMM modules support these workloads by minimizing memory bottlenecks and ensuring data accuracy through ECC protection.

Enterprise Workstations

Advanced workstations used for engineering, 3D rendering, and media production can also benefit from this category when paired with server-grade motherboards and CPUs. Large memory capacity allows complex projects to remain fully resident in RAM, improving productivity and reducing reliance on slower storage.