SK hynix 64GB DDR5-5600 ECC RDIMM Server Memory Module HMCG94BGBRA

Brand: SK Hynix | Category: Memory (RAM)

SKU: HMCG94BGBRA | Part #: HMCG94BGBRA

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Product Overview

The SK hynix 64GB DDR5-5600 ECC RDIMM is a server-grade, registered dual in-line memory module engineered to meet the demanding requirements of next-generation enterprise computing environments. Operating at a validated speed of 5600 MT/s, this module represents the leading edge of DDR5 memory technology, delivering nearly double the bandwidth of its DDR4 predecessors while incorporating advanced on-die error-correcting code (ECC) functionality built directly into each DRAM die. Designed for 5th-generation Intel Xeon Scalable processors and AMD EPYC 9004-series platforms, this module enables enterprise IT architects, cloud providers, and high-performance computing operators to maximise memory bandwidth, improve application throughput, and reduce unplanned downtime caused by memory-related errors.

SK hynix is one of the world's largest and most trusted DRAM manufacturers, with decades of innovation in high-reliability memory solutions. The HMCG94BGBRA module is manufactured to meet stringent JEDEC DDR5 specifications and is validated for use in mission-critical server platforms where data integrity, stability, and performance are non-negotiable. For organisations upgrading aging DDR4 infrastructure or deploying entirely new server platforms, this 64GB RDIMM provides the capacity and speed necessary to support modern workloads including artificial intelligence inference, in-memory databases, virtualisation, and real-time analytics.

Key Features & Benefits

• High-Density 64GB Capacity: Each module provides 64 gigabytes of addressable memory, enabling system architects to configure servers with up to several terabytes of total DRAM when populating all available DIMM slots — ideal for memory-intensive workloads such as SAP HANA, Oracle Exadata, and large-scale VM consolidation.
• DDR5-5600 MT/s Speed: Running at 5600 megatransfers per second, this RDIMM delivers substantially higher bandwidth than DDR4-3200 modules, accelerating data movement between processors and memory subsystems for latency-sensitive applications including real-time analytics and AI inference pipelines.
• Registered (RDIMM) Architecture: The registered buffer on the address and command bus reduces electrical load on the memory controller, enabling stable operation at higher densities and across more DIMM slots per channel — critical for maximising memory capacity in multi-socket enterprise servers.
• On-Die ECC (ODECC) & System ECC: DDR5 introduces on-die ECC as a standard feature, correcting single-bit errors within the DRAM device itself before data is returned to the memory controller. Combined with traditional system-level ECC, this dual-layer protection significantly reduces the probability of uncorrectable errors, improving platform reliability and uptime.
• Lower Operating Voltage: DDR5 modules operate at 1.1V compared to the 1.2V standard of DDR4, resulting in measurable reductions in power consumption per module. At scale, across hundreds of servers in a data centre, this translates into meaningful energy savings and reduced cooling costs.
• JEDEC Standard Compliance: Fully compliant with JEDEC DDR5 specifications, ensuring broad compatibility with certified server platforms from leading OEMs including Supermicro, Lenovo, HPE, and Dell, as well as whitebox server solutions built on Intel and AMD reference designs.
• Enterprise-Grade Reliability: Manufactured under SK hynix's rigorous quality control processes, this module undergoes extensive testing for thermal stability, signal integrity, and long-term endurance, ensuring dependable operation in always-on enterprise environments.
• RoHS Compliant: Designed to meet environmental compliance standards, making it suitable for deployment in organisations with strict environmental procurement policies.

Technical Architecture

The SK hynix HMCG94BGBRA module is built on a 288-pin DDR5 RDIMM form factor, measuring the industry-standard 1.2-inch height. Internally, the module features SK hynix's advanced 1z-nm or 1a-nm class DDR5 DRAM dies, delivering improved cell density and reduced leakage current compared to previous process nodes. The registered clock driver (RCD) — a key component unique to RDIMM architecture — re-drives the address, command, and control signals from the memory controller, allowing the module to support greater electrical loads without signal degradation. This makes RDIMMs the preferred choice for dual-socket and quad-socket server configurations where multiple modules are populated per memory channel.

DDR5 introduces significant architectural changes compared to DDR4. Each DDR5 module contains two independent 32-bit sub-channels (versus a single 64-bit channel in DDR4), effectively doubling command bus efficiency and enabling finer-grained memory access. The power management integrated circuit (PMIC) is embedded directly on the module, shifting voltage regulation closer to the DRAM and reducing noise on the system board. Burst length has been increased to BL16, and the prefetch architecture has been updated to support higher peak bandwidth. These structural changes collectively contribute to the substantially higher throughput figures achievable with DDR5-5600 versus previous memory generations.

Performance & Capacity

At 5600 MT/s with a 64-bit data bus width per sub-channel (two sub-channels of 32-bit each effectively), the theoretical peak bandwidth per module approaches approximately 44.8 GB/s — a significant uplift over DDR4-3200's peak of approximately 25.6 GB/s per channel. In dual-channel and quad-channel server configurations, aggregate memory bandwidth can exceed 350 GB/s per socket on platforms such as the Intel Xeon Scalable 5th Gen (Emerald Rapids) and AMD EPYC Genoa, enabling AI inference engines, high-frequency trading systems, and in-memory databases to sustain throughput levels previously unachievable with DDR4 platforms.

With 64GB per module and modern server platforms supporting 8 to 24 DIMM slots, a single server node can be configured with up to 1.5TB of DDR5 memory using these modules, providing ample capacity for large language model (LLM) inference, virtualised desktop infrastructure (VDI), and high-performance analytics platforms. Memory access latency, while slightly higher in absolute clock cycle terms than DDR4, is mitigated by the bandwidth gains and improved prefetch efficiency inherent to the DDR5 architecture.

Compatibility & Integration

The SK hynix 64GB DDR5-5600 RDIMM is compatible with server platforms based on the following processor families:

• Intel Xeon Scalable 5th Generation (Emerald Rapids) — supports DDR5-5600 natively
• Intel Xeon Scalable 4th Generation (Sapphire Rapids) — supports DDR5 up to 4800 MT/s; 5600 modules may operate at reduced speeds depending on platform configuration
• AMD EPYC 9004 Series (Genoa/Genoa-X) — full DDR5 RDIMM support
• Supermicro H13, H12, and X13 platform server boards
• Lenovo ThinkSystem V3 servers
• HPE ProLiant Gen11 servers
• Dell PowerEdge 16G servers

The module adheres to JEDEC JESD79-5 DDR5 standards and supports industry-standard SPD (Serial Presence Detect) and TS (Temperature Sensor) interfaces for system health monitoring and BIOS auto-configuration. It is compatible with standard IPMI and Redfish-based server management platforms, allowing administrators to monitor memory health, temperature, and error statistics through existing data centre management toolchains.

Ideal Use Cases

• AI & Machine Learning Inference: Large-scale AI inference workloads require rapid access to model weights and intermediate tensor data held in system memory. The high bandwidth of DDR5-5600 accelerates data transfer between CPU and memory, reducing inference latency for deployed LLMs and transformer-based models.
• In-Memory Database Platforms: Solutions such as SAP HANA, Redis Enterprise, and VoltDB require all working datasets to reside in DRAM for sub-millisecond query response. A 64GB RDIMM enables maximum memory population for in-memory analytics at scale.
• High-Density VMware & KVM Virtualisation: Consolidating large numbers of virtual machines onto a single physical host demands substantial DRAM capacity. These modules allow IT teams to run hundreds of VMs per node, improving infrastructure utilisation and reducing total hardware footprint.
• OLAP & Real-Time Business Intelligence: Columnar analytics databases and BI platforms benefit enormously from memory bandwidth. DDR5-5600 modules accelerate scan-intensive queries across wide fact tables common in enterprise data warehousing.
• High-Performance Computing (HPC) & Scientific Simulation: Computational fluid dynamics, genomics, finite element analysis, and weather modelling workloads are memory-bandwidth-bound. High-frequency DDR5 RDIMMs provide the throughput needed to keep compute cores continuously fed with data.
• Cloud-Native & Containerised Workloads: Kubernetes clusters and microservices platforms running high pod-density configurations benefit from the combination of large per-module capacity and low voltage, enabling cloud service providers to optimise cost-per-core-per-GB ratios in their server fleets.
• ERP & Mission-Critical Business Applications: Enterprise resource planning systems and transactional databases running Oracle, Microsoft SQL Server, or PostgreSQL at scale benefit from reduced memory error rates enabled by dual-layer DDR5 ECC, ensuring transaction integrity and audit compliance.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, serving enterprise clients across the GCC region and internationally. We maintain localised inventory of high-demand server memory components including SK hynix DDR5 RDIMMs, ensuring rapid fulfilment for organisations operating in the UAE, Saudi Arabia, Qatar, Kuwait, Bahrain, Oman, and beyond. Our team of enterprise hardware specialists provides expert pre-sales consultation to help data centre managers, IT procurement teams, and systems integrators select the correct memory configuration for their specific server platforms and workload profiles. All products supplied by Omnixon are brand new, sourced through authorised channels, and verified for authenticity. Omnixon's regional presence, combined with deep product knowledge and a commitment to enterprise-grade service, makes us the preferred memory and server hardware partner for organisations that cannot afford compromise in their infrastructure supply chain.

Related Products & Ecosystem

To build a complete, high-performance server memory subsystem or upgrade an existing platform, consider pairing these SK hynix DDR5-5600 RDIMMs with complementary products available from Omnixon's catalogue. Explore our range of Enterprise Servers from vendors including Supermicro, Dell, HPE, and Lenovo, all supporting DDR5 memory architectures. Our CPUs category features Intel Xeon Scalable and AMD EPYC processors that pair directly with DDR5-5600 RDIMMs. For storage performance to match your memory upgrade, browse our Enterprise SSDs and NVMe storage solutions. Complete your data centre infrastructure with our Network Adapters & NICs, Network Switches, and Server Racks & Enclosures to ensure your upgraded compute nodes are supported by a robust, high-throughput network and physical infrastructure fabric.