HMAG94DXNRB205N Hynix 64GB PC4-25600 DDR4-3200MT/s 2Rx4 ECC Memory

Overview of the 64GB Memory

High-capacity enterprise memory modules form the backbone of modern server, workstation, and data center infrastructures where stability, reliability, and predictable performance are mandatory. The HMAG94DXNRB205N Hynix 64GB PC4-25600 DDR4-3200MT/s 2Rx4 ECC Memory belongs to a category of advanced DDR4 ECC registered memory solutions designed for mission-critical environments. This category focuses on server-grade DIMMs engineered to deliver sustained bandwidth, high memory density, and error-resilient operation across demanding workloads such as virtualization, cloud computing, database processing, artificial intelligence, and enterprise storage platforms.

Manufacturer and Product Details

• Brand: Hynix 
• Part Number: HMAG94DXNRB205N
• Product Type: DDR4 SDRAM Memory Module

Memory Specifications

• Total Capacity: 64GB RAM
• Memory Technology: DDR4 SDRAM
• Memory Speed: 3200 MT/s
• Bandwidth Rating: DDR4-25600 / PC4-25600
• CAS Latency: CL22
• Rank Structure: Dual Rank (2Rx4)

Reliability and Signal Management

• Error Correction Code (ECC) for improved data accuracy
• Registered signal processing for enhanced system stability
• Optimized for continuous operation in server environments

Compatibility

Supported PowerEdge Servers

• PowerEdge R640, R740, R740xd, R940
• PowerEdge R440, R540
• PowerEdge T440, T640
• PowerEdge C4140, C6420
• PowerEdge FC640, M640, M640 VRTX

Compatible Precision Workstations

• Precision T7820 and T7820 XL
• Precision T7920 and T7920 XL
• Precision R7920 and R7920 XL
• Precision T5820 and T5820 XL

Enterprise DDR4 ECC Memory Modules for Data-Critical Systems

DDR4-3200 ECC memory modules are widely adopted across modern server architectures due to their balance of speed, efficiency, and compatibility with contemporary CPU memory controllers. With a clock rate of 3200MT/s and a PC4-25600 bandwidth rating, this category addresses the performance requirements of scalable systems while maintaining strict data integrity standards. Modules in this classification are manufactured to meet rigorous validation criteria, ensuring consistent operation in multi-DIMM configurations and long-term deployment scenarios.

High-Density 64GB Memory Architecture

The 64GB capacity class represents a key segment within enterprise DDR4 memory categories, enabling system architects to maximize memory footprint per slot while reducing overall DIMM count. High-density modules such as the HMAG94DXNRB205N support memory-intensive applications by allowing servers to reach large aggregate capacities without compromising airflow or power efficiency. This is particularly valuable in rack-mounted servers and blade systems where physical constraints and thermal considerations play a major role.

Memory modules in this category typically employ advanced DRAM chip stacking and layout techniques to achieve higher density. The 2Rx4 organization indicates a dual-rank configuration using x4 DRAM devices, a design that enhances signal integrity and enables more reliable operation in multi-channel memory architectures. This structure is preferred in enterprise servers because it offers better electrical characteristics compared to x8 configurations when scaling to high capacities.

Advantages of Dual-Rank (2Rx4) Design

Dual-rank memory modules provide multiple benefits in server environments. By distributing memory access across two ranks, the memory controller can interleave operations, improving effective throughput and reducing latency in certain workloads. The x4 DRAM layout further enhances fault tolerance by allowing ECC mechanisms to correct a wider range of bit errors, an essential feature in systems where uptime and data accuracy are paramount.

This category of memory is optimized for compatibility with enterprise-class processors from leading CPU manufacturers, ensuring that memory training, initialization, and runtime performance are stable even under sustained load. The 2Rx4 architecture is often recommended by server OEMs for systems populated with high-capacity DIMMs, making it a standard choice in enterprise deployments.

DDR4-3200 Performance Characteristics

Operating at 3200MT/s, DDR4-3200 memory modules offer a significant improvement in bandwidth over earlier DDR4 generations. The PC4-25600 designation reflects a theoretical maximum bandwidth of 25.6GB/s per module, enabling faster data transfer between the CPU and memory subsystem. This performance level supports modern workloads that rely on high memory throughput, including real-time analytics, in-memory databases, and large-scale virtualization.

Memory in this category is engineered to maintain stable performance at rated speeds even when fully populated across all memory channels. Careful attention is given to signal timing, voltage regulation, and thermal behavior to ensure that the module operates within specification across a wide range of environmental conditions. This makes DDR4-3200 ECC memory suitable for continuous operation in enterprise servers running 24/7.

PC4-25600 Bandwidth Benefits

The increased bandwidth provided by PC4-25600 memory modules directly impacts application responsiveness and system scalability. High-bandwidth memory reduces bottlenecks in data-intensive tasks, allowing CPUs to process larger datasets more efficiently. In multi-socket server configurations, this advantage is amplified as multiple processors access memory concurrently across multiple channels.

Systems utilizing DDR4-3200 ECC memory can achieve higher consolidation ratios, supporting more virtual machines or containers per host without degrading performance. This makes the category particularly attractive for cloud service providers and enterprises seeking to optimize infrastructure utilization while maintaining consistent quality of service.

Error-Correcting Code (ECC) Memory Reliability

ECC memory is a defining feature of enterprise-grade DIMMs, and this category emphasizes data integrity as a core requirement. Error-Correcting Code technology detects and corrects single-bit memory errors while identifying multi-bit errors that could compromise system stability. In large memory configurations, the probability of transient errors increases, making ECC protection essential for reliable long-term operation.

The HMAG94DXNRB205N and similar modules within this category implement advanced ECC algorithms at the hardware level, working in conjunction with the system’s memory controller. This ensures that data corruption is minimized and system crashes due to memory errors are significantly reduced. ECC memory is indispensable in applications where accuracy and reliability outweigh the minimal performance overhead associated with error checking.

Impact of ECC on Mission-Critical Workloads

In environments such as financial systems, healthcare databases, scientific computing, and enterprise resource planning platforms, even minor data corruption can have serious consequences. ECC memory provides an additional layer of protection, safeguarding sensitive information and maintaining computational accuracy. This category of memory is therefore a standard requirement in certified server platforms and professional workstations.

ECC functionality also contributes to improved system uptime by preventing crashes caused by uncorrected memory errors. Over time, this translates into lower maintenance costs, fewer service interruptions, and greater confidence in system reliability, all of which are critical considerations for enterprise IT operations.

Registered DIMM (RDIMM) Technology

Registered DIMMs are designed to support larger memory capacities and more stable signal transmission in multi-DIMM configurations. This category of DDR4 ECC memory incorporates a register between the DRAM modules and the memory controller, reducing electrical load and allowing more DIMMs to be installed per channel. RDIMM technology is a cornerstone of enterprise server memory architecture.

By buffering address and control signals, registered memory improves scalability and reliability, especially in systems with high memory density. This makes RDIMM-based modules suitable for dual-socket and quad-socket servers where memory population can be extensive. The use of registered memory is often mandated by server manufacturers to ensure compatibility and optimal performance.

Scalability Benefits of RDIMM Memory

Registered DIMMs enable servers to reach higher total memory capacities without sacrificing stability. This is particularly important for applications that benefit from large in-memory datasets, such as big data analytics and virtualization platforms. RDIMM memory allows system builders to fully populate memory channels while maintaining signal integrity and consistent performance.

This category of memory is extensively validated against server chipset specifications, ensuring seamless integration and predictable behavior. The combination of RDIMM and ECC features makes these modules a trusted choice for enterprise deployments requiring both scale and reliability.

Power Efficiency and Thermal Management

DDR4 memory introduced significant improvements in power efficiency compared to previous generations, and this category continues to leverage those advancements. Operating at a lower voltage than DDR3, DDR4-3200 ECC memory reduces overall system power consumption while delivering higher performance. This efficiency is critical in data center environments where energy costs and thermal output are major concerns.

High-capacity modules such as 64GB DIMMs are engineered with optimized thermal characteristics to ensure stable operation under continuous load. Heat spreaders, PCB design, and component selection all contribute to effective heat dissipation, helping maintain performance consistency and prolonging component lifespan.

Data Center Optimization Considerations

In large-scale deployments, the cumulative power savings of efficient memory modules can be substantial. DDR4 ECC memory in this category supports green IT initiatives by lowering power draw per gigabyte of memory. This allows organizations to scale memory capacity without proportionally increasing energy consumption or cooling requirements.

Thermal stability also plays a role in maintaining reliable operation over extended periods. Memory modules designed for enterprise use undergo extensive testing to ensure they can withstand elevated temperatures and continuous workloads, making them suitable for high-density server racks and demanding operating conditions.

Compatibility with Modern Server Platforms

Memory modules in this category are designed to be compatible with a wide range of modern server platforms and chipsets that support DDR4 ECC RDIMM technology. This includes systems from major OEMs as well as custom-built enterprise servers. Compatibility testing ensures that these modules meet JEDEC standards and platform-specific requirements.

The standardized form factor and electrical specifications of DDR4 RDIMM memory simplify system upgrades and expansions. IT professionals can confidently deploy additional modules as capacity requirements grow, knowing that the memory will integrate seamlessly with existing hardware configurations.

Enterprise Validation and Quality Assurance

Memory in this category is subject to rigorous quality control and validation processes. Manufacturers such as Hynix adhere to strict production standards, ensuring consistent performance and reliability across batches. This level of quality assurance is essential for enterprise customers who rely on predictable hardware behavior.

Extensive testing under various workloads and environmental conditions helps identify potential issues before deployment. As a result, DDR4-3200 ECC RDIMM memory modules are trusted components in certified server platforms and enterprise infrastructure solutions worldwide.

Use Cases Across Enterprise and Professional Environments

The category encompassing the HMAG94DXNRB205N Hynix 64GB PC4-25600 DDR4-3200MT/s 2Rx4 ECC Memory is well-suited to a broad range of enterprise and professional use cases. Virtualized environments benefit from high memory capacity and bandwidth, enabling higher VM density and smoother performance. Database servers leverage large, fast memory pools to accelerate query processing and reduce latency.

High-performance computing workloads, including scientific simulations and machine learning applications, rely on consistent memory throughput and data integrity. ECC-protected DDR4-3200 memory ensures that complex calculations are performed accurately, reducing the risk of silent data corruption that could compromise results.

Long-Term Value for Infrastructure Investments

Investing in enterprise-grade memory provides long-term value by extending system lifespan and reducing the likelihood of memory-related failures. High-capacity DDR4 ECC RDIMM modules allow organizations to future-proof their infrastructure, accommodating growing data and application demands without frequent hardware replacements.

This category of memory supports scalable architectures and evolving workloads, making it a strategic component in modern IT planning. By prioritizing reliability, performance, and efficiency, enterprise DDR4 ECC memory modules deliver a strong foundation for business-critical computing environments.