HMCG84MEBQA110N Hynix 32GB 4800MT/s PC5-38400 1rx4 ECC DDR5 Memory

Hynix HMCG84MEBQA110N 32GB Memory

The Hynix HMCG84MEBQA110N is a high-performance 32GB DDR5 SDRAM module engineered for enterprise-grade servers, delivering exceptional speed, reliability, and efficiency.

Product Information

• Brand Name: Hynix
• Part Number: HMCG84MEBQA110N
• Product Type: 32GB DDR5 Registered DIMM

Extended Specifications

• Large storage size of 32GB for demanding workloads
• Advanced DDR5 SDRAM architecture for faster data throughput
• Bus speed rated at 4800MT/s (PC5-38400) for rapid processing
• ECC (Error-Correcting Code) support ensures data accuracy and integrity
• Registered signal processing enhances stability in multi-module server environments
• CAS latency timing of CL40 for optimized responsiveness
• 1Rx4 rank configuration balances efficiency and reliability

Physical Characteristics

• 288-pin RDIMM design tailored for server compatibility
• Robust build quality for continuous operation in data centers

Hynix 32GB PC5-38400 Memory Overview

The Hynix HMCG84MEBQA110N 32GB 4800MT/s PC5-38400 1Rx4 ECC 1.1V CL40 DDR5 SDRAM 288-Pin RDIMM represents a modern class of server memory designed for data centers, enterprise servers, and mission-critical workloads. As part of the latest generation of DDR5 Registered DIMMs, this memory module delivers significant improvements in bandwidth, efficiency, reliability, and scalability over previous DDR4 technologies. Built on SK hynix’s advanced semiconductor manufacturing process and validated for server-class platforms, this RDIMM is optimized for performance consistency, signal integrity, and long-term system stability. DDR5 memory architecture introduces fundamental enhancements that directly benefit server environments, including higher data transfer rates, increased bank groups, on-die ECC, improved power efficiency through lower voltage operation, and enhanced channel efficiency. With a speed rating of 4800MT/s and a PC5-38400 bandwidth classification, this 32GB RDIMM is well-suited for workloads such as virtualization, cloud computing, high-performance computing (HPC), enterprise databases, and large-scale data analytics. Its 1Rx4 organization and ECC support ensure data integrity, making it an essential component in systems where uptime and accuracy are non-negotiable.

Technical Architecture

DDR5 SDRAM represents a substantial leap forward from DDR4 in both performance and efficiency. The Hynix HMCG84MEBQA110N module benefits from DDR5’s architectural changes, including a doubled bank count, increased burst length, and more granular power management. These advancements allow higher data throughput while maintaining or reducing power consumption per bit transferred. Operating at 4800MT/s, this RDIMM delivers faster memory access compared to earlier DDR generations, enabling servers to process more instructions per clock cycle and handle greater concurrency. DDR5 also introduces two independent 32-bit subchannels per DIMM, compared to a single 64-bit channel in DDR4. This dual-subchannel design reduces latency, improves efficiency, and enhances parallelism in memory access operations. As a result, the HMCG84MEBQA110N RDIMM supports improved throughput under heavy workloads, making it ideal for multi-core processors and NUMA-based architectures commonly found in modern servers.

Performance

The PC5-38400 classification corresponds to a theoretical maximum bandwidth of 38.4GB/s per module. This level of throughput is essential for modern server workloads that demand rapid access to large datasets, such as in-memory databases, machine learning training, and real-time analytics. With a clock speed of 4800MT/s, the HMCG84MEBQA110N module provides a substantial performance uplift over DDR4-3200 modules, which are limited to 25.6GB/s per DIMM. Latency is also a crucial factor in memory performance, particularly in workloads that involve frequent random memory access. With a CAS latency of CL40, this DDR5 RDIMM balances high-speed operation with reliable timing stability. While absolute latency values in nanoseconds may be higher than some DDR4 modules due to higher clock speeds, the overall system performance benefits from increased throughput, improved parallelism, and reduced memory contention.

Energy Efficiency

The Hynix HMCG84MEBQA110N module operates at a reduced voltage of 1.1V, compared to 1.2V for DDR4, delivering meaningful power savings across large memory footprints. While the voltage reduction may appear modest, the cumulative effect across dozens or hundreds of DIMMs in a server environment can result in substantial energy savings.

Registered DIMM

The HMCG84MEBQA110N module is a Registered DIMM (RDIMM), which incorporates a register between the memory controller and the DRAM chips. This register buffers control signals, reducing electrical load on the memory controller and enabling support for higher memory capacities and more populated memory channels. In enterprise servers, RDIMMs are essential for achieving high memory density and maintaining signal integrity across multi-DIMM configurations. Registered memory is particularly important in systems with multiple memory channels and large numbers of DIMMs per channel. Without buffering, signal degradation can occur due to increased electrical loading, leading to instability, reduced performance, or system errors. The registered design of this module ensures consistent signal timing, improved scalability, and reliable operation even in heavily populated memory configurations.

1Rx4 Memory

This module features a 1Rx4 memory organization, meaning it consists of a single rank of memory with x4-wide DRAM chips. This configuration is optimized for enterprise server applications, offering improved error correction capabilities and better performance under certain workloads compared to x8-based modules. The x4 chip organization allows more granular error detection and correction, enhancing data integrity and system reliability. In x4-based memory modules, ECC operates at a finer granularity, enabling the detection and correction of more complex error patterns. This is particularly beneficial in environments where data accuracy is critical, such as financial systems, scientific computing, and large-scale enterprise databases.

Error Correction Code

ECC memory is a fundamental requirement in server environments where data accuracy, system stability, and uptime are critical. The Hynix HMCG84MEBQA110N RDIMM includes full ECC support, enabling the detection and correction of single-bit memory errors and the detection of multi-bit errors. This capability significantly reduces the risk of data corruption, system crashes, and application failures caused by memory faults. In enterprise servers, even a single bit error can have serious consequences, potentially leading to corrupted databases, incorrect computations, or system downtime. ECC memory mitigates these risks by continuously monitoring memory data and correcting errors in real time. This proactive approach to error management enhances system reliability and ensures consistent performance over extended operating periods.

Compatibility

The Hynix HMCG84MEBQA110N 32GB DDR5 RDIMM is designed for compatibility with a wide range of modern server platforms that support DDR5 memory. This includes servers based on the latest generations of Intel Xeon Scalable processors and AMD EPYC processors, as well as enterprise-grade workstations and high-performance computing systems. These platforms leverage DDR5’s enhanced bandwidth, capacity, and efficiency to support increasingly demanding workloads.

Form Factor

This module features a 288-pin RDIMM form factor, which is the standard physical design for DDR5 server memory. The 288-pin layout is shared with DDR4 DIMMs, but DDR5 modules are electrically and mechanically keyed differently to prevent incorrect installation. This ensures compatibility with DDR5-enabled memory slots while preventing accidental insertion into incompatible DDR4 slots.

Use Cases

The Hynix HMCG84MEBQA110N DDR5 RDIMM is well-suited for a broad range of enterprise and data center applications. Its combination of high capacity, high bandwidth, low power consumption, and robust reliability makes it ideal for modern computing workloads that demand both performance and stability. Virtualization environments benefit significantly from high-capacity, high-speed memory modules. By increasing memory bandwidth and reducing contention, this RDIMM enables higher virtual machine density per host, improved VM performance, and more efficient resource utilization.

High-Performance

High-performance computing (HPC) workloads, such as scientific simulations, computational modeling, and data-intensive research, demand memory systems that can keep pace with powerful multi-core processors and accelerators. The HMCG84MEBQA110N DDR5 RDIMM provides the bandwidth and capacity required to feed data to CPUs and GPUs efficiently, minimizing bottlenecks and maximizing computational throughput.

Integration

The Hynix HMCG84MEBQA110N DDR5 RDIMM integrates seamlessly with modern server memory subsystems, supporting advanced features such as memory interleaving, rank interleaving, and adaptive memory scheduling. These features optimize memory access patterns, reduce latency, and improve overall system performance under diverse workloads. Memory interleaving distributes memory accesses across multiple channels, ranks, and banks, improving parallelism and reducing access contention. Rank interleaving further enhances performance by allowing concurrent access to different ranks within a DIMM, maximizing utilization of available memory resources.