HMCG78AHBRA478N Hynix 16GB PC5-51200 DDR5-6400MHz 1Rx8 ECC Memory

Hynix HMCG78AHBRA478N 16GB Server Memory Kit

The Hynix HMCG78AHBRA478N features a substantial 16GB memory capacity configured as a single 1x16GB module. This configuration provides optimal flexibility for server deployments, allowing system administrators to populate DIMM slots according to specific workload requirements. The single-module design enables efficient memory scaling while maintaining system stability and performance consistency across various server platforms.

Memory Technology and Speed

Utilizing cutting-edge DDR5 SDRAM technology, this memory module operates at an impressive 6400MT/s data rate, classified under the PC5-51200 specification. This represents a significant advancement over previous DDR4 generations, delivering substantially improved data transfer capabilities. The enhanced speed directly translates to reduced latency in memory-intensive applications and better overall system responsiveness in server environments.

Advanced Memory Architecture

ECC Registered Technology

The Hynix HMCG78AHBRA478N incorporates Error Correcting Code technology combined with Registered architecture. ECC functionality provides crucial error detection and correction capabilities, automatically identifying and rectifying single-bit memory errors while detecting multi-bit errors. The Registered design includes a register between the memory controller and DRAM modules, reducing electrical load on the memory controller and enabling support for higher memory capacities while maintaining signal integrity across all installed modules.

1RX8 Organization and Rank Structure

This module features a 1RX8 organization, indicating a single-rank configuration with eight internal bank groups. The single-rank design optimizes signal quality and timing parameters, while the x8 DRAM organization provides balanced performance characteristics. This configuration is particularly beneficial for memory-intensive applications requiring consistent, low-latency access patterns across diverse server workloads.

Performance Characteristics

CAS Latency

The module operates at CAS Latency 46 (CL46) within the JEDEC standard timing specifications for DDR5-6400 modules. This carefully optimized latency configuration balances the high-speed data transfer capabilities with reliable access timing. The CL46 rating ensures predictable performance across various server applications while maintaining compatibility with a wide range of server platforms and processors.

Power Efficiency

Operating at 1.1 volts, the Hynix HMCG78AHBRA478N demonstrates significant power efficiency improvements compared to previous memory generations. The reduced operating voltage contributes to lower overall power consumption in server environments while maintaining stable performance characteristics.

288-Pin RDIMM Form Factor

The module utilizes the standard 288-pin Registered DIMM form factor specifically designed for server applications. This physical configuration ensures broad compatibility with modern server platforms while providing robust mechanical stability. The RDIM design includes additional buffering components that enhance signal integrity, particularly important in multi-DIMM configurations common in enterprise server environments.

Enterprise Server Compatibility

The Hynix HMCG78AHBRA478N is engineered for compatibility with modern server platforms supporting DDR5 technology. This includes latest-generation Intel Xeon Scalable processors and AMD EPYC server platforms that incorporate DDR5 memory controllers. The module adheres to JEDEC standard specifications, ensuring reliable operation across compatible server motherboards and systems designed for enterprise deployment.

Workload Optimization Characteristics

Cloud Applications

This memory module excels in virtualized environments where multiple virtual machines require consistent memory performance. The high bandwidth and reliable ECC protection make it ideal for hypervisor platforms and cloud infrastructure. The 16GB capacity per module provides flexible allocation options for virtual machine memory assignments while maintaining performance isolation between workloads.

Database and Transaction Processing

For database servers and online transaction processing systems, the Hynix HMCG78AHBRA478N delivers the consistent low-latency performance required for rapid data access and manipulation. The ECC functionality provides critical protection against memory errors that could corrupt database transactions, while the high bandwidth supports concurrent access from multiple database processes and applications.

DDR5 Technological Advancements

The DDR5 architecture includes on-die ECC capabilities that complement the module-level ECC functionality. This two-tier error correction approach provides enhanced reliability by correcting errors at the DRAM device level before they reach the memory bus. This architecture significantly improves mean time between failures and provides additional protection for critical server applications requiring maximum uptime and data integrity.

Signal Integrity

The module incorporates an onboard Power Management Integrated Circuit that provides superior voltage regulation compared to previous memory generations. This PMIC distributes power more efficiently to the DRAM devices, reducing noise and improving signal integrity. The localized voltage regulation enables more precise power delivery and enhances the module's ability to maintain stable operation under varying load conditions.

Dual Channel and Multi-Channel

When deployed in multi-channel configurations, the Hynix HMCG78AHBRA478N modules enable optimal memory bandwidth utilization. Modern server platforms typically support dual-channel, quad-channel, or octa-channel memory architectures. Proper configuration of these modules across available memory channels maximizes available memory bandwidth and reduces access latency through parallel operation across multiple channels.

Memory Interleaving Benefits

The module supports memory interleaving configurations that distribute memory accesses across multiple physical ranks and channels. This interleaving capability improves effective memory bandwidth by allowing concurrent access to different memory regions. The 1RX8 rank configuration optimizes interleaving efficiency while maintaining compatibility with various interleaving schemes supported by server platforms.