HMCG84AHBRA478N Hynix 32GB DDR5-6400 PC5-51200 Memory

Hynix HMCG84AHBRA478N 32GB DDR5 RAM

The Hynix HMCG84AHBRA478N 32GB DDR5-6400 PC5-51200 ECC RDIMM CL52 288-Pin Memory Module is engineered for enterprise-grade performance, offering exceptional speed, reliability, and efficiency for modern server infrastructures.

General Details

• Brand: Hynix
• Part Number: HMCG84AHBRA478N
• Category: 32GB DDR5 ECC Registered Server RAM – High-speed solution for enterprise systems

Technical Specifications

Performance Attributes

• Capacity: 32GB – Perfect for intensive server and workstation workloads
• Memory Type: DDR5 SDRAM – Advanced bandwidth with improved energy efficiency
• Module Count: 1 x 32GB – Single DIMM for simplified upgrades
• Speed: 6400MT/s – Blazing-fast PC5-51200 data transfer rate

Reliability Features

• Error Correction: ECC – Error-correcting code ensures stable and accurate data handling
• Signal Processing: Registered (Buffered) – Optimized for enterprise-grade server environments
• Latency: CL52 – Consistent high-speed responsiveness
• Rank: 1Rx4 – Single rank x4 DRAM configuration
• Voltage: 1.1V – Energy-efficient operation

Physical Characteristics

Form Factor

• Design: 288-pin RDIMM – Compatible with DDR5-ready server motherboards

Dimensions & Weight

Shipping Dimensions

• Height: 1.00”
• Depth: 6.75”

Shipping Weight

• 0.20 lb – Lightweight packaging for easy handling

Compatibility

Server Integration

• Designed for DDR5-ready server motherboards
• Ideal for enterprise systems, data centers, and high-performance computing

Overview Enterprise-Class DDR5 Registered Memory 

The Hynix HMCG84AHBRA478N 32GB DDR5-6400 PC5-51200 ECC RDIMM CL52 288-Pin Memory Module belongs to a high-performance enterprise memory category designed specifically for modern data centers, workstation platforms, and mission-critical server environments. This category represents the evolution of registered dual in-line memory modules as the DDR5 standard introduces a substantial leap in bandwidth, power efficiency, and architectural intelligence compared to previous generations. DDR5 RDIMM modules are engineered to meet the demands of multi-core processors, dense virtualization workloads, large-scale databases, artificial intelligence inference, and high-throughput computing systems where stability and scalability are mandatory.

Registered memory modules integrate a register clock driver that buffers address and command signals, reducing electrical load on the memory controller. This design enables higher memory capacities per channel, improved signal integrity, and reliable operation in multi-DIMM configurations. Within this category, DDR5 RDIMM modules operate at significantly higher data rates while maintaining strict timing accuracy, making them a cornerstone component in next-generation server platforms based on Intel Xeon and AMD EPYC architectures.

DDR5 Technology Advancements and Performance Scaling

The DDR5 memory category introduces architectural enhancements that fundamentally redefine memory performance metrics. Operating at an effective speed of 6400 MT/s, DDR5-6400 modules such as the Hynix HMCG84AHBRA478N deliver substantially higher theoretical bandwidth than DDR4, reaching PC5-51200 data transfer rates. This bandwidth increase directly benefits applications that are memory throughput sensitive, including real-time analytics, in-memory databases, scientific modeling, and high-frequency transactional systems.

DDR5 memory modules employ dual independent 32-bit subchannels per DIMM, improving memory access efficiency and reducing latency bottlenecks under parallel workloads. This subchannel architecture allows the memory controller to interleave operations more effectively, which enhances performance consistency even under heavy multi-threaded access patterns. As a result, systems populated with DDR5 RDIMM memory experience smoother scaling when additional CPU cores and threads are introduced.

Clocking, Timing, and Latency Characteristics

With a CAS latency rating of CL52, this category of DDR5 RDIMM memory balances high-frequency operation with predictable access timing. While absolute latency values are numerically higher than DDR4, the increased clock speed significantly offsets this factor, resulting in comparable or improved real-world performance. The precise timing parameters of DDR5-6400 memory ensure stable data access across extended operational cycles, which is essential for enterprise systems that run continuously under load.

Advanced on-die error detection and command/address parity further enhance reliability, allowing these modules to maintain data integrity at elevated speeds. This is particularly relevant in server environments where even minor data corruption can have cascading effects on applications, databases, and virtual machines.

Error Correction Code and Data Integrity Assurance

The ECC RDIMM category is defined by its ability to detect and correct single-bit memory errors while identifying multi-bit faults. The Hynix HMCG84AHBRA478N 32GB DDR5 module exemplifies this category by incorporating robust ECC functionality that operates transparently to the operating system and applications. This level of protection is indispensable for enterprise workloads that demand absolute data accuracy, such as financial processing, healthcare systems, and enterprise resource planning platforms.

ECC memory plays a crucial role in reducing system crashes, preventing silent data corruption, and improving overall uptime. In large-scale deployments where servers handle terabytes of data daily, the cumulative risk of memory errors increases. ECC RDIMM modules mitigate this risk, ensuring consistent system behavior and long-term reliability.

Server Reliability and Continuous Operation

This category of memory is engineered for 24/7 operation in controlled thermal environments. DDR5 ECC RDIMM modules undergo extensive validation to meet stringent enterprise standards, including thermal stress testing, signal integrity analysis, and long-duration burn-in procedures. These processes ensure that the modules can sustain peak performance without degradation over extended service lifespans.

The inclusion of ECC functionality aligns with the broader enterprise hardware ecosystem, supporting features such as memory scrubbing, predictive failure analysis, and system-level fault management. These capabilities are essential in data centers where proactive maintenance and minimal downtime are key operational objectives.

Advanced Power Management and Efficiency

DDR5 memory introduces integrated power management circuitry directly onto the DIMM, shifting voltage regulation away from the motherboard. This design improves power delivery accuracy and reduces electrical noise, contributing to overall system stability. The category benefits from lower operating voltages compared to DDR4, which translates into reduced power consumption per bit transferred.

For large memory configurations, improved power efficiency has a measurable impact on operational costs and thermal management. Data centers leveraging DDR5 RDIMM memory can achieve higher memory densities without proportionally increasing cooling requirements, supporting sustainable infrastructure growth.

Capacity Optimization and Scalability

The 32GB capacity of the Hynix HMCG84AHBRA478N positions it within a category optimized for scalable memory configurations. This capacity strikes a balance between cost efficiency and performance, allowing system architects to populate servers with substantial total memory while maintaining flexibility for future expansion. DDR5 RDIMM modules are designed to support high slot counts per system, enabling total memory capacities that extend into the multi-terabyte range.

Scalability is a defining characteristic of this category, as modern enterprise workloads often evolve rapidly. Virtualized environments, containerized applications, and large-scale analytics platforms benefit from the ability to add memory incrementally without compromising performance or stability. Registered memory ensures consistent signal quality across populated slots, maintaining reliability as capacity grows.

Compatibility with Modern Server Platforms

This category of DDR5 ECC RDIMM memory is engineered to align with the latest server chipset specifications and processor memory controllers. Compatibility extends across leading enterprise platforms, ensuring seamless integration into validated hardware configurations. Strict adherence to JEDEC standards guarantees interoperability, reducing deployment complexity and minimizing the risk of configuration issues.

Server manufacturers and system integrators rely on standardized DDR5 RDIMM modules to streamline qualification processes and ensure consistent performance across product lines. This standardization enables rapid deployment and simplified lifecycle management for enterprise IT environments.

Thermal Design and Mechanical Specifications

DDR5 RDIMM modules in this category adhere to the 288-pin DIMM form factor, maintaining mechanical compatibility with existing server memory slots designed for DDR5. Precision manufacturing ensures accurate pin alignment, robust PCB construction, and reliable contact integrity. These physical characteristics are essential for maintaining stable electrical connections under thermal cycling and mechanical stress.

Thermal considerations are addressed through optimized PCB layouts and component placement, facilitating effective airflow and heat dissipation. In high-density server configurations, efficient thermal performance contributes to sustained memory bandwidth and prevents thermal throttling.