HMCG94AEBQA119N Hynix 64GB 4800MTS PC5-38400 CL40 DDR5 SDRAM Memory

Overview of the Hynix HMCG94AEBQA119N 64GB DDR5 SDRAM

The Hynix HMCG94AEBQA119N 64GB DDR5 Registered ECC Memory Module is a high-performance server-grade RAM solution engineered for demanding computing environments. Designed with cutting-edge DDR5 SDRAM architecture, it delivers enhanced bandwidth efficiency, improved power management, and superior data stability for enterprise systems. Operating at 4800MT/s (PC5-38400) with CL40 latency, this 288-pin RDIMM module ensures consistent responsiveness and optimized multitasking capabilities. Built with ECC (Error-Correcting Code) and registered signal processing, it provides reliable data integrity and minimizes system errors, making it ideal for mission-critical workloads. Its 2Rx4 rank structure further enhances memory performance and scalability in compatible server platforms.

General Information

• Manufacturer: Hynix
• Manufacturer Part Number: HMCG94AEBQA119N
• Product Name: 64GB DDR5 PC5-38400 SDRAM Memory Module

Technical Specifications

• Memory Capacity: 64GB high-density configuration
• Memory Type: DDR5 SDRAM next-generation architecture
• Module Configuration: 1 x 64GB single module design
• Speed Rating: 4800MT/s (DDR5-4800 / PC5-38400 bandwidth class)
• Error Correction: ECC support for improved data reliability
• Signal Type: Registered DIMM for server stability
• CAS Latency: CL40 optimized timing response
• Rank Architecture: 2Rx4 structure for enhanced efficiency

Key Advantages

• Optimized for enterprise servers and data-intensive workloads
• Improved system reliability with ECC error correction technology
• Enhanced multitasking performance through DDR5 bandwidth upgrade
• Stable operation using registered memory architecture
• Energy-efficient design suitable for continuous workloads

The Hynix HMCG94AEBQA119N 64GB DDR5 RDIMM RAM

The Hynix HMCG94AEBQA119N 64GB 4800MTS PC5-38400 CL40 ECC Registered DDR5 SDRAM 288-Pin RDIMM Memory Module represents a high-capacity, enterprise-grade memory solution designed for modern server environments where stability, bandwidth efficiency, and data integrity are essential. Built on DDR5 architecture, this module is engineered to support workloads that demand sustained performance, such as virtualization clusters, cloud data centers, artificial intelligence processing nodes, and mission-critical database systems.

Unlike consumer memory modules, this RDIMM (Registered Dual In-Line Memory Module) integrates advanced buffering and error correction capabilities that significantly improve reliability under heavy multi-channel memory loads. The module’s 64GB density allows servers to scale memory pools efficiently, reducing the need for excessive physical slots while maximizing per-channel throughput. This makes it suitable for dense compute environments where expansion capability and stability are equally important.

The combination of ECC (Error-Correcting Code) and registered signaling ensures that data transmission between the memory controller and DRAM chips remains stable, even under continuous high-pressure workloads. This level of reliability is critical in environments where even minor memory corruption can result in system instability or data loss.

DDR5 SDRAM Technology

DDR5 SDRAM introduces a significant leap forward compared to previous generation DDR4 modules. It improves memory density, increases bandwidth per module, and enhances power efficiency through integrated voltage regulation at the module level. The Hynix HMCG94AEBQA119N takes full advantage of these architectural enhancements, delivering higher throughput at lower operating voltages while maintaining strict stability requirements for enterprise systems.

One of the most important advancements in DDR5 architecture is the doubling of burst length and improved bank structure. These changes allow memory operations to be processed more efficiently, reducing bottlenecks during high-volume data transfers. As a result, systems equipped with DDR5 RDIMM modules can handle more simultaneous processes without performance degradation.

Improved Channel Architecture and Efficiency

DDR5 memory modules introduce a dual sub-channel design within each DIMM. This allows the module to behave like two independent memory channels, improving access efficiency and reducing latency in multi-threaded workloads. In large-scale computing environments, this structure contributes to smoother data handling and better utilization of CPU memory bandwidth.

The Hynix HMCG94AEBQA119N leverages this architecture to support modern multi-core processors that rely heavily on parallel memory access. This is especially relevant in server CPUs that contain dozens of cores, where memory contention can become a limiting factor if the memory subsystem is not optimized.

Registered DIMM Architecture and Signal Stability

Registered DIMM technology introduces a register between the memory controller and the DRAM chips. This register acts as a buffer, reducing electrical load on the memory controller and improving signal integrity. The Hynix HMCG94AEBQA119N uses this mechanism to ensure stable operation in systems populated with multiple memory modules.

By reducing direct electrical stress on the memory controller, RDIMM configurations allow server systems to support higher memory capacities without compromising reliability. This is particularly important in rack-mounted servers and blade systems where multiple memory modules operate simultaneously under high thermal and electrical density.

Signal Integrity in High-Density Server Environments

In enterprise computing environments, signal integrity becomes increasingly important as memory density grows. Without proper buffering, electrical noise and signal degradation can lead to data corruption or system crashes. RDIMM architecture mitigates these risks by isolating the memory controller from direct load stress and ensuring clean signal transmission across all memory channels.

The Hynix RDIMM design is optimized for sustained server workloads, ensuring that even under continuous high utilization, memory operations remain stable and predictable. This level of consistency is essential for environments such as financial systems, cloud hosting platforms, and enterprise application servers.

Error Correction Code (ECC)

ECC memory is a critical component in server-grade computing environments. It is designed to detect and correct single-bit memory errors automatically, reducing the risk of data corruption. The Hynix HMCG94AEBQA119N integrates ECC functionality to ensure that any minor errors occurring during data storage or retrieval are corrected in real time.

This capability is particularly important in long-running systems where even small memory errors can accumulate and lead to significant operational issues. ECC ensures that system reliability is maintained over extended uptime periods, which is a key requirement in enterprise server infrastructure.

Impact of ECC on System Reliability

By implementing ECC correction mechanisms, server administrators can reduce unexpected system crashes and data inconsistencies. ECC memory contributes to overall system resilience by ensuring that transient errors caused by electrical interference, cosmic radiation, or thermal fluctuations are corrected before affecting system processes.

In mission-critical environments such as banking systems, medical data processing, and cloud storage services, ECC memory like the Hynix HMCG94AEBQA119N plays an essential role in maintaining operational integrity and preventing costly downtime.

Understanding PC5-38400 DDR5 Memory

The PC5-38400 specification indicates the theoretical peak bandwidth of the memory module under DDR5 standards. This translates to approximately 38,400 MB/s of data transfer capability per module under optimal conditions. This level of bandwidth enables high-speed data processing for applications that require rapid access to large datasets.

In real-world server applications, this bandwidth supports workloads such as large-scale virtualization, distributed computing frameworks, and in-memory databases. The increased throughput ensures that CPUs remain efficiently fed with data, minimizing idle cycles and maximizing processing efficiency.

4800 MTS Data Transfer Rate

The 4800 MTS (Mega Transfers per Second) rating reflects the speed at which data is transferred between the memory module and the system. DDR5 technology improves this metric significantly over DDR4, enabling faster response times and improved system responsiveness in high-demand environments.

The Hynix module leverages this transfer rate to ensure that multi-threaded workloads can access memory resources without delay, improving overall system efficiency and reducing latency in compute-intensive applications.

CAS Latency CL40

CAS latency, represented as CL40 in this module, refers to the delay between a memory request and the actual delivery of data. While DDR5 modules often exhibit higher latency numbers compared to DDR4, the increased bandwidth and architectural improvements compensate for this difference, resulting in superior overall performance.

The balance between latency and bandwidth is carefully optimized in enterprise memory systems. The Hynix HMCG94AEBQA119N is designed to maintain consistent timing performance under heavy workloads, ensuring predictable system behavior even in complex computing environments.

Enterprise Server Workload Optimization

Virtualization platforms rely heavily on memory performance and capacity to run multiple virtual machines simultaneously. The 64GB density of the Hynix HMCG94AEBQA119N allows servers to host a large number of virtual instances without memory saturation. This improves resource allocation efficiency in cloud environments and enterprise data centers.

The RDIMM ECC architecture ensures that each virtual machine operates in a stable memory environment, reducing the risk of cross-instance interference or memory-related failures. This is essential for service providers managing multi-tenant workloads.

Cloud Computing and Distributed Systems

Cloud computing infrastructure demands high memory throughput and reliability. The DDR5 capabilities of this module support large-scale distributed systems where memory bandwidth directly affects system responsiveness. Applications such as container orchestration, microservices deployment, and real-time analytics benefit significantly from this memory configuration.

The scalability of DDR5 RDIMM modules allows cloud providers to expand memory capacity efficiently while maintaining consistent performance across compute nodes.

Database and In-Memory Processing Systems

Modern database systems often rely on in-memory processing to achieve low-latency query execution. The Hynix HMCG94AEBQA119N supports these workloads by providing high-speed data access and stable ECC protection. This ensures that transactional systems, analytical databases, and caching layers operate without interruption.

High memory bandwidth is particularly important in large-scale database replication and synchronization processes, where data consistency and speed are both critical requirements.

DDR5 Power Efficiency Enhancements

DDR5 technology introduces improved power efficiency through onboard power management integrated circuits. This allows more precise voltage regulation directly on the memory module, reducing power loss and improving thermal stability. The Hynix HMCG94AEBQA119N benefits from these enhancements, making it suitable for dense server racks where heat management is critical.

Lower power consumption per bit of data processed contributes to reduced operational costs in large data centers. Over time, this efficiency translates into significant energy savings, especially in environments with thousands of active memory modules.

Server Motherboard and CPU Compatibility

The Hynix HMCG94AEBQA119N is designed for compatibility with server-grade motherboards that support DDR5 RDIMM memory modules. These platforms typically include enterprise processors capable of handling multiple memory channels and high-capacity memory configurations.

Compatibility depends on chipset support for DDR5 ECC RDIMM configurations, ensuring that the memory module operates at its full rated speed of 4800 MTS while maintaining error correction functionality.

Memory Controller Integration in Modern CPUs

Modern server CPUs integrate advanced memory controllers capable of managing multiple DDR5 channels simultaneously. The Hynix module is optimized for these controllers, ensuring efficient communication between processor cores and memory subsystems.

This integration is essential for maintaining high throughput in workloads that require constant memory access, such as artificial intelligence training, scientific simulations, and enterprise resource planning systems.

High-Capacity Memory Scaling in Data Centers

Scalability is one of the primary advantages of RDIMM-based memory systems. The 64GB capacity per module allows servers to scale memory significantly without occupying excessive physical slots. This is particularly useful in data center environments where space efficiency is a critical factor.

Large-scale deployments benefit from the predictable performance characteristics of DDR5 RDIMM modules, enabling consistent system behavior across multiple nodes.