M321R4GA3PB0-CWMXH Samsung 32GB PC5-44800 RDIMM Memory Module

• Manufacturer: Samsung
• Part Number: M321R4GA3PB0-CWMXH 
• Product Type: 32GB DDR5 SDRAM RDIMM

Understanding DDR5 Server Memory

The transition from DDR4 to DDR5 memory architecture is not merely an incremental speed bump; it is a comprehensive re-engineering of the memory subsystem. The Samsung M321R4GA3PB0-CWMXH is at the forefront of this shift, bringing transformative improvements that address the bottlenecks of previous generations and unlock new levels of system performance.

Architectural Advancements of DDR5

DDR5 introduces several key architectural changes. Most notably, the power management integrated circuit (PMIC) has migrated from the motherboard to the memory module itself. This onboard PMIC, present in the Samsung M321R4GA3PB0-CWMXH, enables more stable and granular power delivery, reducing noise and improving signal integrity. Furthermore, DDR5 doubles the burst length and prefetch size compared to DDR4, allowing for more efficient data transfer in each clock cycle. The module's operating voltage is reduced to 1.1V, contributing to significant power savings at scale—a crucial factor for large-scale data center deployments.

RDIMM (Registered DIMM) Technology for Enterprise Stability

The "RDIMM" designation in Samsung M321R4GA3PB0-CWMXH is a hallmark of enterprise-grade memory. Registered DIMMs incorporate a register (or buffer) between the memory controller and the DRAM chips. This register buffers the command and address signals, reducing the electrical load on the controller. The primary benefits are twofold: it enables support for much higher memory capacities per channel and significantly improves signal integrity and system stability in multi-DIMM configurations. This makes RDIMMs, like this Samsung module, the de facto standard for mission-critical servers where data integrity and reliability are paramount.

Performance Architecture

DDR5 introduces a substantial leap over previous standards by offering increased bandwidth, enhanced reliability mechanics, and better power distribution through integrated PMIC components. The Samsung M321R4GA3PB0-CWMXH module takes full advantage of this architecture, making it suitable for high-capacity servers, multi-node clusters, and precision-focused computing environments.

Reliability

In the realm of enterprise computing, server memory is far more than just temporary storage; it is the critical workspace where live data, active applications, and crucial instructions reside for instantaneous processing. Unlike standard desktop memory, server memory modules are engineered for relentless operation, extreme stability, and data integrity under heavy, sustained loads. This category encompasses specialized memory types like ECC (Error-Correcting Code) Registered DIMMs, designed specifically for servers, workstations, and high-availability systems. The Samsung M321R4GA3PB0-CWMXH 32GB module is a quintessential example of this class, built to ensure that mission-critical operations—from financial transactions and database management to virtualized environments and cloud infrastructure—run flawlessly 24/7.

The SAMSUNGM M321R4GA3PB0-CWMXH for Your Server

Opting for the SAMSUNG M321R4GA3PB0-CWMXH memory module means investing in reliability, speed, and durability. With its ECC support and high transfer speeds, it is designed to meet the rigorous demands of data centers, enterprise servers, and cloud computing systems. By installing this DDR5 module in your server, you can expect enhanced performance in handling large-scale data operations, running multiple virtual machines, or supporting demanding applications. The high data transfer speed ensures that your system can handle these tasks without bottlenecks.

Capacity: 32GB

The Samsung PC5-44800 2Rx8 ECC RDIMM Memory Module packs an impressive 32GB capacity, making it an excellent choice for users who require a high-performance memory solution. With this substantial amount of memory, your system will be able to handle demanding tasks and applications effortlessly. Whether you're a professional content creator working with large files or a gamer wanting to experience seamless gameplay, the 32GB capacity of this memory module ensures smooth performance without any lag or slowdowns. The "M32" prefix typically indicates a 32GB module capacity. This high density is ideal for maximizing total system memory in limited DIMM slot configurations, enabling larger in-memory databases and supporting more virtual machines per host.

Speed and Standard: PC5-44800

The designation PC5-44800 is the module's standardized specification under JEDEC, the industry body. PC5 indicates it is a DDR5 module. The number 44,800 refers to the module's data transfer rate in Mega transfers per second (MT/s). This equates to a bandwidth of approximately 35.2 GB/s per module (calculated as [MT/s] * [64-bit/8 bits per byte] = ~35,200 MB/s). This is a significant leap over previous DDR4 generations, directly translating to faster data access for CPU cores and reduced bottlenecks in data-intensive applications.

Form Factor: 288-Pin RDIMM

The 288-pin specification is the physical connector standard for DDR5 modules, which is different from DDR4's 288-pin layout (key notch position differs). RDIMM stands for Registered Dual In-Line Memory Module, confirming the presence of the address/command register. This is the standard module type for mainstream servers from vendors like Dell, HPE, Lenovo, and Supermicro, providing the optimal balance of performance, capacity, and stability.

Compatibility

The Samsung 32GB DDR5 5600MHz RDIMM M321R4GA3PB0-CWMXH is designed for compatibility with modern server architectures including those from Intel (Xeon Scalable processors with DDR5 support) and AMD (EPYC 9004 Genoa series). It is compatible with a wide range of OEM systems and motherboards that accept DDR5 RDIMMs. Engineered according to strict JEDEC DDR5 standards, this memory module integrates smoothly with a wide array of modern server boards that accept 288-pin RDIMMs. Users can benefit from expanded memory capacities, enhanced I/O performance, and strengthened data integrity across various server ecosystems.