HMCGM4MHBRB Hynix 96GB DDR5 6400MHz PC5-51200 ECC 288-Pin DIMM Ram

Highlights of Hynix HMCGM4MHBRB 96GB DDR5 6400MHz Ram

The Hynix HMCGM4MHBRB 96GB DDR5 server memory is built to deliver ultra-fast data throughput, high density, and enterprise-level stability. Designed for next-generation servers and data centers, this DDR5 RDIMM ensures optimal performance for compute-intensive and memory-heavy workloads.

General Information

• Manufacturer: SK Hynix
• Part Number: HMCGM4MHBRB
• Product Type: Server Memory Module
• Sub Type: DDR5 6400MHz PC5-51200

Technical Specifications

• Total Capacity: 96GB
• Module Quantity: 1 Memory Module
• Rank Structure: Dual Rank
• Memory Speed: 6400MHz
• Memory Standard: DDR5-6400 / PC5-51200
• CAS Latency: CL52
• Operating Voltage: 1.1V
• Error Checking: ECC (Error-Correcting Code)
• Signal Processing: Registered

Physical Characteristics

• Form Factor: 288-Pin DIMM
• Length: 8 inches
• Width: 2 inches
• Thickness: 500 mil
• Shipping Weight: 0.20 lb

Key Features and Highlights

• 96GB high-capacity DDR5 server memory module
• DDR5-6400MHz speed with PC5-51200 bandwidth
• ECC support for enhanced data integrity
• Registered DIMM for enterprise reliability
• Dual-rank design for optimized performance
• Low-voltage 1.1V operation

Overview of Hynix HMCGM4MHBRB 96GB PC5-51200 ECC Ram

The Hynix HMCGM4MHBRB 96GB DDR5 6400MHz PC5-51200 ECC Registered CL52 Dual Rank 1.1V 288-Pin DIMM Server Memory Module is part of the advanced enterprise DDR5 ECC RDIMM server memory category designed for modern data center infrastructures, cloud platforms, high-performance computing clusters, and mission-critical enterprise systems. This category represents the convergence of extreme memory bandwidth, very high module density, and enterprise-grade reliability required by next-generation processors and software workloads. DDR5 ECC Registered memory modules in this class are engineered specifically for servers and workstations that demand predictable performance, scalability across multiple memory channels, and continuous operation under sustained load.

Category Role in Modern Server Architectures

As CPU core counts increase and parallel processing becomes the norm, the memory subsystem must scale accordingly. The HMCGM4MHBRB category is designed to eliminate memory bottlenecks by delivering both very high per-module bandwidth and large capacity per slot. This enables server platforms to maintain balanced compute-to-memory ratios, ensuring that processors remain fully utilized even under data-intensive workloads. The registered DIMM architecture in this category supports dense memory configurations while preserving signal integrity, making it ideal for dual-socket and multi-socket enterprise servers with fully populated DIMM slots.

Positioning Within DDR5 PC5-51200 Memory Segments

Within the DDR5 ecosystem, PC5-51200 memory represents a high-performance tier focused on bandwidth-sensitive workloads. The HMCGM4MHBRB category occupies this tier with enterprise validation, ECC protection, and registered signaling, differentiating it from unbuffered or consumer-oriented DDR5 modules. This positioning allows organizations to deploy maximum memory throughput without compromising on reliability, lifecycle consistency, or platform compatibility.

DDR5 SDRAM Architectural Advancements

DDR5 SDRAM introduces substantial architectural changes over DDR4, all of which are leveraged by the Hynix HMCGM4MHBRB category. These advancements are focused on improving concurrency, bandwidth efficiency, and power optimization while supporting larger module capacities. Key enhancements include increased bank counts, expanded bank groups, longer burst lengths, improved command scheduling, and advanced refresh mechanisms. Collectively, these features reduce contention and latency in multi-threaded environments, enabling servers to process more memory transactions in parallel.

Dual Independent 32-Bit Sub-Channel Design

Each DDR5 DIMM is divided into two independent 32-bit sub-channels, allowing simultaneous memory operations within a single module. The HMCGM4MHBRB category benefits from this design by increasing effective utilization of available bandwidth and reducing queueing delays when multiple cores access memory concurrently. This is particularly advantageous for virtualized environments and cloud platforms where many workloads compete for memory access at the same time.

High-Frequency Signal Integrity at 6400MHz

Operating at 6400MHz requires precise electrical engineering to maintain signal integrity. The HMCGM4MHBRB category employs high-quality PCB materials, optimized trace layouts, and strict manufacturing tolerances to ensure stable data transmission at very high speeds. This attention to signal quality supports reliable long-term operation in enterprise servers that run continuously under demanding conditions.

DDR5 6400MHz Performance and PC5-51200 Bandwidth

The 6400MHz operating frequency of the Hynix HMCGM4MHBRB category corresponds to a PC5-51200 bandwidth rating, delivering up to 51.2GB/s of theoretical peak bandwidth per module. This substantial throughput enables faster data movement between memory and CPU cores, reducing stalls and improving overall system responsiveness. High memory bandwidth is critical for workloads such as large-scale analytics, real-time data processing, high-frequency trading systems, and scientific simulations where memory throughput directly impacts application performance.

Memory Bandwidth Scaling Across Server Channels

Enterprise processors typically feature multiple memory channels per socket, allowing total system bandwidth to scale linearly as channels are populated. The HMCGM4MHBRB category is designed for balanced population across channels, ensuring uniform bandwidth distribution and consistent performance. This scalability supports multi-socket servers used in enterprise data centers and high-performance computing clusters.

Latency Characteristics and CL52 Timing Profile

The CL52 timing specification reflects the balance between high frequency and stable latency required in enterprise environments. While higher frequencies can increase absolute latency values, the overall reduction in access time per data transfer often results in net performance gains for bandwidth-sensitive workloads. The HMCGM4MHBRB category is tuned to operate within server memory controller specifications, delivering predictable and repeatable performance across a wide range of applications.

96GB High-Density Dual Rank Memory Design

The 96GB capacity of the Hynix HMCGM4MHBRB category allows servers to achieve very large memory footprints using fewer DIMM slots. High-density modules reduce the total number of physical components required, simplifying system design and improving airflow within server enclosures. Dual rank architecture increases effective memory interleaving, improving access efficiency and throughput in multi-channel configurations.

Cloud Workload Enablement

Virtualization platforms rely heavily on available memory to support multiple virtual machines and containers. The HMCGM4MHBRB category enables higher consolidation ratios by providing large memory capacity per slot, allowing more workloads to run concurrently without memory contention. This capability is essential for cloud service providers and enterprise private clouds seeking to maximize infrastructure utilization.

In-Memory Databases and Real-Time Analytics

In-memory databases and analytics engines benefit significantly from large memory capacities that allow datasets to remain resident in RAM. The 96GB capacity of this category reduces reliance on secondary storage, lowering latency and accelerating query execution. This makes the HMCGM4MHBRB category well suited for financial analytics, recommendation engines, and real-time monitoring systems.

ECC Registered Memory Reliability and Data Protection

Error-correcting code functionality is a defining feature of enterprise memory. The Hynix HMCGM4MHBRB category includes full ECC support, enabling detection and correction of single-bit errors and detection of multi-bit faults before they can affect application behavior. ECC protection is essential in environments where data integrity is critical and downtime is costly.

Importance of ECC in Always-On Server Environments

Servers often operate continuously for months or years, increasing exposure to transient memory errors caused by electrical noise, cosmic radiation, or component aging. ECC functionality mitigates these risks, ensuring consistent system stability over long operational lifecycles. This reliability is crucial for industries such as finance, healthcare, telecommunications, and government infrastructure.

Registered DIMM Signal Buffering Benefits

The registered DIMM architecture buffers command and address signals, reducing electrical load on the memory controller. This enables stable operation with high-capacity modules and fully populated memory channels. The HMCGM4MHBRB category leverages this architecture to support scalable memory configurations without compromising signal integrity.

1.1V Operating Voltage

The Hynix HMCGM4MHBRB category operates at a nominal voltage of 1.1V, reflecting DDR5’s improved power efficiency compared to previous generations. Lower operating voltage reduces overall power consumption and heat generation, which is critical in dense data center deployments. Energy efficiency contributes to lower operating costs and improved thermal management across large server fleets.

On-Module Integration

DDR5 memory incorporates on-module power management to improve voltage regulation and reduce electrical noise. The HMCGM4MHBRB category benefits from this design, maintaining stable operation at very high frequencies. This architecture also simplifies motherboard design and enhances platform-level reliability.

Thermal Stability Under Sustained Load

High-frequency, high-capacity memory modules must operate reliably under sustained workloads. The HMCGM4MHBRB category is engineered to meet enterprise thermal requirements, supporting continuous operation without performance throttling. This thermal stability is essential for data centers with constrained cooling resources.

Platform and Enterprise Qualification

Enterprise memory modules must be extensively validated to ensure compatibility with a wide range of server platforms. The Hynix HMCGM4MHBRB category is designed to meet industry standards and is qualified for use with modern server processors and chipsets that support DDR5 ECC RDIMM memory. This qualification ensures predictable behavior, simplified deployment, and reduced risk during system upgrades.

Consistency and Long-Term Availability

Enterprise deployments often require consistent hardware configurations over extended periods. The HMCGM4MHBRB category is supported by controlled manufacturing processes and long-term product availability, enabling organizations to maintain homogeneous server fleets. This consistency simplifies maintenance, spares management, and capacity planning.

Scalable Foundation for Future Enterprise Growth

As enterprise workloads continue to evolve, memory subsystems must provide both current performance and future scalability. The high bandwidth, large capacity, ECC protection, and energy efficiency of the Hynix HMCGM4MHBRB category make it a robust foundation for next-generation enterprise computing environments. This category supports organizations as they adopt more data-intensive applications, expand virtualization footprints, and prepare for future processor architectures.