Hynix HMCG84AGBRA193N 32GB PC5-44800 DDR5-5600MT/s 1Rx4 ECC Memory

Hynix HMCG84AGBRA193N RDIMM: Engineered for Data Center

The Hynix HMCG84AGBRA193N represents the pinnacle of DDR5 memory technology specifically engineered for enterprise servers and high-performance workstations. This 32GB module operates at 5600MHz (PC5-44800) with advanced ECC and Registered features that ensure maximum reliability in mission-critical environments. As data centers transition from DDR4 to DDR5 architecture, this module delivers the substantial performance improvements, power efficiency, and scalability required for next-generation computing infrastructure.

Understanding DDR5 Server Memory Architecture

DDR5 technology marks a fundamental shift in memory architecture, offering significant advantages over previous generations. The Hynix HMCG84AGBRA193N leverages these innovations to deliver approximately 1.5x the bandwidth of comparable DDR4 modules while operating at reduced voltage. The implementation of on-die ECC, decision feedback equalization (DFE), and dual sub-channel architecture creates a more robust and efficient memory solution for enterprise applications.

Key DDR5 Architectural Advancements

Unlike DDR4, DDR5 incorporates a more sophisticated command/address architecture with separate power management ICs (PMICs) that enable better voltage regulation directly on the module. This distributed power management reduces signal noise and improves power efficiency across the entire memory subsystem. The Hynix HMCG84AGBRA193N utilizes these advancements to maintain stable operation even under sustained heavy workloads.

Comprehensive Technical Specifications

Module Configuration and Physical Properties

Memory Organization

The Hynix HMCG84AGBRA193N is organized as a single-rank module with x4 data configuration. This organization optimizes memory access patterns for server workloads while maintaining signal integrity across all data lanes. The single-rank design ensures compatibility with high-density server configurations while minimizing electrical load on the memory controller.

Rank and Bank Architecture

This module implements a sophisticated bank architecture with 32 banks (16 banks per bank group) compared to DDR4's 16 banks. This doubling of bank resources significantly reduces bank conflicts and improves overall memory efficiency, particularly in multi-threaded server applications where multiple processors access memory simultaneously.

Electrical Characteristics

Operating at just 1.1V, the Hynix HMCG84AGBRA193N delivers higher performance at lower power consumption compared to DDR4's 1.2V operation. This 8.3% reduction in operating voltage translates to substantial power savings at data center scale while maintaining exceptional signal integrity through advanced equalization techniques.

Timing Parameters (CL46)

The CAS Latency of 46 cycles at 5600MHz represents an optimized balance between bandwidth and responsiveness for server workloads. While the absolute latency appears higher than DDR4 modules, the significantly increased data rate delivers superior overall performance for enterprise applications where bandwidth often outweighs pure latency considerations.

ECC and Registered Technology: Ensuring Data Integrity

Error Correcting Code (ECC) Implementation

The Hynix HMCG84AGBRA193N incorporates sophisticated ECC capabilities that detect and correct single-bit errors while detecting multi-bit errors. This functionality is critical for maintaining data integrity in enterprise environments where continuous operation and data accuracy are paramount. The module's ECC implementation works in conjunction with on-die ECC to provide comprehensive error protection throughout the memory subsystem.

On-Die ECC vs Module-Level ECC

DDR5 introduces on-die ECC that corrects errors within the DRAM chips themselves before they reach the memory bus. This complements the traditional module-level ECC to create a multi-layered protection scheme. The Hynix module leverages both approaches to maximize reliability and minimize soft error rates that can accumulate in large memory installations.

Registered DIMM (RDIMM) Architecture

As a Registered DIMM, the Hynix HMCG84AGBRA193N incorporates register chips (RCDs) that buffer command/address signals between the memory controller and DRAM chips. This buffering reduces electrical load on the memory controller, enabling support for higher module densities and more DIMMs per channel while maintaining signal integrity at high data rates.

Benefits of Registered Architecture in Server Environments

The registered architecture enables more stable memory subsystems in multi-socket server configurations where memory scalability is essential. By reducing the electrical demand on the memory controller, RDIMMs allow for larger memory capacities per CPU socket – a critical requirement for memory-intensive applications like database servers, virtualization hosts, and in-memory computing platforms.

Performance Characteristics and Real-World Applications

Application Performance Benefits

Database and Transaction Processing

In OLTP and database environments, the increased bandwidth and improved bank management of DDR5 significantly reduce query response times and improve concurrent transaction throughput. The ECC protection ensures data integrity for critical business records, while the registered design maintains stability in large memory configurations.

Virtualization and Cloud Infrastructure

For hypervisors and virtualized environments, the Hynix DDR5 RDIMM enables higher virtual machine density with consistent performance. The increased bandwidth benefits memory ballooning and transparent page sharing techniques, while the reliability features ensure uninterrupted operation of multi-tenant workloads.

High-Performance Computing

In scientific computing and big data analytics, the module's high bandwidth accelerates data movement between processors and memory, reducing computation time for complex algorithms and large datasets. The single-rank x4 organization optimizes memory access patterns for sequential processing common in analytical workloads.

DDR5 in the Broader Memory Ecosystem

Comparison with Alternative Memory Technologies

DDR5 vs DDR4

The transition from DDR4 to DDR5 represents the most significant memory architecture shift in a decade. While DDR4 typically tops out at 3200MT/s, DDR5 starts at 4800MT/s and scales beyond 5600MT/s. The Hynix HMCG84AGBRA193N at 5600MHz delivers approximately 75% more bandwidth than comparable DDR4-3200 modules while operating at lower voltage with enhanced reliability features.

DDR5 RDIMM vs LRDIMM

While both RDIMMs and LRDIMMs (Load Reduced DIMMs) are used in servers, RDIMMs offer the optimal balance of performance, power efficiency, and cost for most applications. LRDIMMs provide higher capacity at the expense of slightly increased latency and power consumption, making them suitable for maximum capacity configurations where density outweighs absolute performance considerations.