M321R4GA3PB0-CWMCJ Samsung 32GB DDR5 PC5-44800 288-Pin RDIMM Memory Module

Samsung M321R4GA3PB0-CWMCJ 32GB DDR5 RDIMM Memory

The Samsung M321R4GA3PB0-CWMCJ 32GB DDR5 RDIMM module stands out as a high-performance server-grade memory component engineered for fast data throughput, advanced reliability, and efficient workload handling. Built for the newest enterprise platforms, this Registered DIMM delivers remarkable bandwidth and reduced latency, ensuring dependable performance for virtualized environments, cloud computing operations, and high-density data center deployments.

• Manufacturer: Samsung
• Model Number: M321R4GA3PB0-CWMCJ
• Memory Type: DDR5 SDRAM

Technical Specifications

• Capacity: 32GB
• Speed Rating: PC5-44800
• Module Format: 288-Pin RDIMM (Registered DIMM)
• Form Factor: Standard Server DIMM

Samsung 32GB DDR5 Memory Module

The Samsung M321R4GA3PB0-CWMCJ 32GB DDR5 PC5-44800 RDIMM brings advanced performance, exceptional stability, and next-generation efficiency to high-demand enterprise systems. Designed for modern servers and professional workstations, this registered ECC memory module enhances data reliability while optimizing multitasking in complex workloads. Its DDR5 architecture unlocks higher transfer speeds, lower power consumption, and improved signal integrity—key benefits for IT infrastructures aiming to scale efficiently. DDR5 memory is a fundamental redesign of the DDR interface, bringing transformative improvements that address the bottlenecks of previous generations. While increased data rates are a headline feature, the true power of DDR5 lies in its architectural enhancements that improve system-level efficiency and capability.

Core Architectural Advancements of DDR5

The shift from DDR4 to DDR5 is arguably the most significant since the introduction of DDR itself. Key architectural changes include: Unlike DDR4's single 72-bit channel (64 data bits + 8 ECC), a DDR5 module divides its interface into two independent 40-bit sub-channels (32 data bits + 8 ECC each). This effectively doubles the bank groups accessible to the memory controller, dramatically improving concurrency and reducing access latency for smaller, more common data requests. This makes memory access more efficient under diverse workloads.

Stability

By buffering the command/address signals, the RDIMM allows for much cleaner electrical signals to the individual memory chips. This is paramount in systems operating 24/7 under heavy load, as it minimizes timing errors and ensures consistent, reliable performance.

Capacity: 32GB

The reduced electrical load per channel enables servers to support a significantly higher number of memory modules per CPU. Modern server platforms can often support up to 16 or even 32 RDIMMs per processor, allowing for massive memory configurations (e.g., 2TB+ in a dual-socket server) that are impossible with unbuffered modules. The Samsung M321R4GA3PB0-CWMCJ DDR5 PC5-44800 288-Pin RDIMM Memory Module offers an impressive capacity of 32GB. This significant capacity is a crucial feature that brings numerous benefits and importance for users in various scenarios.

Enterprise Servers 

In virtualized environments (VMware vSphere, Microsoft Hyper-V, KVM), memory is often the first resource to be exhausted. High-density 32GB RDIMMs allow data centers to maximize the virtual machine density per physical host, improving consolidation ratios and reducing total cost of ownership (TCO). The ECC protection ensures VM stability.

Reliability

Samsung is a vertically integrated manufacturer, controlling the entire production process from silicon wafer to finished module. This results in superior quality control. The "R" in RDIMM is the key differentiator from consumer-grade UDIMMs. A Registered DIMM incorporates a register, or buffer, on the module that sits between the system's memory controller and the DRAM chips. This register handles all command and addressing signals, reducing the electrical load on the controller.

The Role of Advanced DRAM Chip Technology

This module utilizes Samsung's cutting-edge 10nm-class or newer DRAM process technology. This finer lithography enables higher densities (the 16Gb chips used here), better performance per watt, and improved signal integrity—all contributing to the module's overall efficiency and stability. Investing in DDR5 RDIMM technology, as exemplified by the Samsung M321R4GA3PB0-CWMCJ, is an investment in infrastructure longevity. As software and workloads continue to evolve, demanding more memory bandwidth and capacity, a DDR5-based server platform provides a clear runway for several upgrade cycles. The architectural benefits of DDR5—from its dual sub-channel design to its power management—ensure that systems built today will remain performant and efficient for years to come, solidifying this memory category as the new cornerstone of enterprise and data-center computing.

Compatibility

With a 288-pin RDIMM form factor, the M321R4GA3PB0-CWMCJ is compatible with various server configurations. Its RDIMM form ensures it is compatible with motherboards that require registered DIMMs for optimal performance. This DDR5 RDIMM is engineered for platforms supporting registered ECC memory technology. It is not interchangeable with consumer desktop UDIMM or SODIMM formats. Ensuring motherboard support for DDR5-5600 RDIMM configurations will deliver the highest performance and stability.

The SAMSUNG M321R4GA3PB0-CWMCJ

Choosing the SAMSUNG M321R4GA3PB0-CWMCJ means opting for a highly reliable, efficient memory solution tailored for server and workstation use. Its robust features, including ECC support, registered memory, and high-speed DDR5 technology, ensure your system operates smoothly and efficiently, even under demanding workloads.