HMCG78AHBRA313N Hynix 16GB DDR5 6400MT/s PC5-51200 CL52 ECC RDIMM Memory

Hynix HMCG78AHBRA313N 16GB DDR5 Memory Module

The Hynix HMCG78AHBRA313N features a substantial 16GB memory capacity organized as a single 16GB module (1x16GB). This configuration utilizes a 1Rx8 (Single Rank, 8 banks) architecture, providing optimal balance between performance and system loading. The single-rank design ensures efficient memory access patterns while maintaining compatibility with various server platforms. This capacity is ideal for applications requiring substantial memory resources without the density constraints of smaller modules.

Memory Technology and Speed

This module employs cutting-edge DDR5 SDRAM technology operating at 6400 MT/s (MegaTransfers per second). The PC5-51200 designation indicates the peak transfer rate of 51200 MB/s, representing a significant performance improvement over previous DDR4 generations. The enhanced data rate enables faster processing of memory-intensive workloads, making this module suitable for enterprise applications requiring high throughput and low latency memory operations.

Advanced Memory Architecture

DDR5 Technology Enhancements

DDR5 architecture introduces several key improvements over DDR4, including doubled burst length and bank groups. The Hynix HMCG78AHBRA313N leverages these enhancements to deliver superior bandwidth while operating at a lower voltage of 1.1V compared to DDR4's 1.2V. This reduction in power consumption translates to improved energy efficiency for data center environments, reducing overall operating costs while maintaining high performance standards.

On-Die ECC Implementation

Beyond the standard ECC functionality, DDR5 modules incorporate On-Die ECC that corrects bit errors within the DRAM chip itself before they reach the memory controller. This additional layer of error correction works in conjunction with the traditional ECC capabilities to provide enhanced data integrity and reliability. The combination of on-die and standard ECC makes this module exceptionally robust for critical server applications where data accuracy is paramount.

Memory Timing and Latency

The module operates at CL52 (CAS Latency 52), which represents the number of clock cycles between a read command and data availability. While this latency figure appears higher than DDR4 equivalents, it's important to consider the significantly faster clock speeds of DDR5 technology. The actual access time in nanoseconds remains competitive, and the increased bandwidth more than compensates for the marginally higher latency in most server workloads.

Advanced Timing Parameters

Beyond CAS latency, the Hynix HMCG78AHBRA313N employs optimized timing parameters including tRCD, tRP, and tRAS that are carefully calibrated for server environments. These timings ensure stable operation at the rated 6400 MT/s speed while maintaining compatibility with various server platforms. The module's timing characteristics are factory-set to provide optimal performance without requiring manual configuration.

Server-Specific Features

ECC and Registered DIMM Technology

The ECC (Error Correcting Code) functionality in the Hynix HMCG78AHBRA313N provides single-bit error correction and double-bit error detection capabilities. This advanced error correction ensures data integrity by automatically detecting and correcting memory errors in real-time. For enterprise servers and data center applications, ECC is essential for maintaining system stability and preventing data corruption that could lead to application crashes or computational errors.

Registered DIMM Architecture

As an RDIMM (Registered Dual In-line Memory Module), this memory module incorporates register chips between the memory controller and DRAM components. These registers buffer command and address signals, reducing electrical load on the memory controller and enabling support for higher memory capacities per channel. The registered design enhances signal integrity, allowing for more stable operation at high speeds and supporting larger memory configurations in multi-processor server systems.

Form Factor

The Hynix HMCG78AHBRA313N utilizes the standard 288-pin DDR5 DIMM form factor with a length of 133.35mm and height typically around 31.25mm. The pin configuration is specifically designed for DDR5 technology and is not compatible with DDR4 slots due to different keying positions. The physical design ensures proper mechanical retention and electrical connectivity within server memory slots while supporting the increased signal count required for advanced DDR5 features.

Compatibility and System Requirements

Server Platform Compatibility

This memory module is designed for compatibility with server platforms supporting DDR5 RDIMM technology. It requires a motherboard with appropriate DDR5 memory slots and a memory controller that supports registered ECC DDR5 modules. Compatibility extends to various server architectures including Intel Xeon Scalable processors and AMD EPYC platforms that incorporate DDR5 memory controllers. System BIOS must support DDR5 technology for proper operation.

Power Efficiency

The Hynix HMCG78AHBRA313N operates at a nominal voltage of 1.1V, consistent with JEDEC standards for DDR5 memory. The PMIC manages additional voltage rails required for various DDR5 functions. Power consumption varies based on operational load but remains within specified thresholds for server environments. The module supports various power states including active, standby, and self-refresh modes to optimize energy usage during different workload conditions.

Performance Characteristics

Data Transfer Capabilities

With a data rate of 6400 MT/s, the Hynix HMCG78AHBRA313N delivers a peak theoretical bandwidth of 51200 MB/s per module. This substantial bandwidth enables faster data processing for memory-intensive applications including database operations, virtualization, scientific computing, and enterprise applications. The increased transfer rate reduces bottlenecks in data movement between memory and processors, improving overall system performance.

Signal Integrity Enhancements

The module incorporates advanced signal integrity features including improved equalization, decision feedback equalization (DFE), and other signal conditioning technologies. These enhancements maintain data integrity at high transfer rates while minimizing bit error rates. The combination of architectural improvements and electrical optimizations ensures reliable operation in demanding server environments where continuous uptime is essential.

Error Mirroring Capabilities

Beyond basic ECC correction, the Hynix HMCG78AHBRA313N supports various error management features including patrol scrub, demand scrub, and memory mirroring capabilities when used in appropriate server platforms. These features work together to detect and isolate memory errors before they can impact system operation. The module also supports error logging functionality for diagnostic purposes and predictive failure analysis.

Application and Use Cases

Enterprise Server Applications

The Hynix HMCG78AHBRA313N is ideally suited for data center environments where reliability, performance, and efficiency are critical. Its ECC functionality ensures data integrity for transactional databases, while the high bandwidth supports virtualization platforms running multiple virtual machines. The registered architecture enables large memory configurations necessary for in-memory databases and big data analytics applications.

Cloud Computing Infrastructure

For cloud service providers, this memory module offers the scalability and reliability required for multi-tenant environments. The combination of high density and advanced error correction makes it suitable for hyperconverged infrastructure, container platforms, and cloud-native applications.

High-Performance Computing

In HPC environments, the Hynix HMCG78AHBRA313N provides the memory bandwidth necessary for scientific simulations, engineering analysis, and research applications. The module's stability under continuous heavy loads makes it appropriate for computational clusters where system failures can result in significant loss of computation time and resources. The ECC protection is particularly valuable for ensuring the accuracy of computational results.