SK hynix 32GB DDR5-4800 ECC RDIMM Server Memory Module HMCG88AEBRA115N

Brand: SK Hynix | Category: Memory (RAM)

SKU: HMCG88AEBRA115N | Part #: HMCG88AEBRA115N

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Product Overview

The SK hynix 32GB DDR5-4800 ECC RDIMM is a flagship enterprise server memory module engineered to meet the rigorous demands of modern data centre workloads. As the world's leading DRAM manufacturer, SK hynix has built this module on advanced DDR5 architecture, delivering a significant generational leap over DDR4 in both raw bandwidth and power efficiency. Operating at 4800 MT/s, this Registered DIMM (RDIMM) incorporates on-die ECC (Error Correcting Code) as well as traditional ECC at the DIMM level, providing layered data integrity protection that is essential for mission-critical enterprise deployments.

With a 32GB capacity per module, the HMCG88AEBRA115N is ideally suited for high-density memory configurations in dual-socket and multi-socket server platforms. Enterprise IT architects deploying AMD EPYC Genoa or Intel Xeon Scalable (Sapphire Rapids and later) processors will find this module to be a natural fit, unlocking the full memory bandwidth potential that these platforms are designed to deliver. Whether you are scaling virtualisation hosts, building out AI inference nodes, or accelerating in-memory databases, this DDR5 RDIMM provides the throughput and reliability infrastructure your workloads demand.

Key Features & Benefits

• DDR5-4800 Speed Rating: Operates at 4800 MT/s natively, offering up to 1.5× the theoretical peak bandwidth compared to DDR4-3200, dramatically reducing memory bottlenecks in throughput-intensive applications.
• 32GB High-Density Capacity: Each module delivers 32 gigabytes of addressable memory, enabling high-density server configurations with fewer DIMMs and reducing total cost of memory infrastructure per socket.
• Registered DIMM (RDIMM) Architecture: The registered buffer on the command and address bus reduces electrical load on the memory controller, enabling stable operation across higher DIMM counts per channel and improving signal integrity in densely populated memory slots.
• ECC Error Correction: Full chipkill-capable ECC support ensures continuous error detection and correction, protecting data integrity in environments where unplanned downtime is not an option — including financial services, healthcare IT, and cloud platforms.
• On-Die ECC (ODECC): DDR5 introduces on-die ECC natively at the DRAM cell level, adding a first layer of correction before data even reaches the memory controller, significantly improving soft-error resilience in high-density DRAM arrays.
• Improved Power Efficiency: DDR5 operates at 1.1V compared to DDR4's 1.2V, reducing per-module power consumption and contributing to lower PUE (Power Usage Effectiveness) in large-scale data centre deployments.
• Dual Sub-Channel Architecture: DDR5's native 32-bit sub-channel design (2×32-bit vs DDR4's single 64-bit channel) improves memory controller efficiency and latency characteristics for diverse workload profiles.
• Brand-New Factory Condition: Supplied as brand-new, unopened units sourced through authorised channels, ensuring full manufacturer quality assurance and compatibility validation.

Technical Architecture

The HMCG88AEBRA115N is built on SK hynix's advanced 1a-nm class DRAM process node, which delivers improved cell density and reduced leakage current compared to previous generations. The module uses a 288-pin DDR5 RDIMM form factor (standard for enterprise server platforms) and incorporates a Register Clock Driver (RCD) compliant with JEDEC DDR5 RCD02 specifications. This RCD buffers the command, address, and clock signals between the memory controller and the DRAM components, ensuring signal integrity across all populated DIMM slots.

DDR5 introduces a fundamentally redesigned power architecture: rather than relying on the motherboard's voltage regulator, each DDR5 DIMM contains an on-module Power Management IC (PMIC). This localises power delivery, reduces noise on the power rail, and allows finer-grained voltage regulation per module. The HMCG88AEBRA115N's PMIC operates from a 12V input rail, converting it to the required 1.1V DRAM voltage on-board.

The module's SPD (Serial Presence Detect) data is stored in a DDR5-compliant SPD5 hub with I3C interface support, enabling more sophisticated platform management and thermal monitoring capabilities compared to the I2C-based SPD used in DDR4. This facilitates accurate power and thermal telemetry for DCIM (Data Centre Infrastructure Management) systems.

Performance & Capacity

At DDR5-4800 speed, this 32GB RDIMM delivers a theoretical peak bandwidth of approximately 38.4 GB/s per channel. In dual-channel configurations — standard on modern server platforms — this scales to over 76 GB/s of aggregate memory bandwidth per socket, a dramatic improvement over DDR4-3200's ~51.2 GB/s dual-channel figure. For memory-bound workloads such as in-memory analytics, large language model (LLM) inference, and real-time streaming data processing, this bandwidth uplift translates directly into measurable throughput gains.

Latency, while slightly higher in absolute clock cycles compared to DDR4 at equivalent speeds, is competitive in nanosecond terms due to the higher operating frequency. At DDR5-4800, CAS latency of CL40 (as per JEDEC specifications) results in an absolute first-word latency of approximately 16.67 ns, comparable to high-performance DDR4-3200 CL22 modules in real-world application timing.

With 32GB per module and up to 12 DIMM slots per socket on platforms like AMD EPYC Genoa, a single dual-socket server can accommodate up to 1.5TB of DDR5 memory using 32GB modules, enabling massive in-memory working sets for virtualisation, databases, and AI workloads.

Compatibility & Integration

The SK hynix HMCG88AEBRA115N is designed and validated for compatibility with the leading enterprise server platforms supporting DDR5 RDIMMs. Key compatibility highlights include:

• Intel Xeon Scalable (4th Gen — Sapphire Rapids): Full compatibility with Intel's Sapphire Rapids platform, which natively supports DDR5-4800 across up to 8 channels per socket.
• AMD EPYC 9004 Series (Genoa/Bergamo): Compatible with AMD's Zen 4-based EPYC processors, which support 12 DDR5 memory channels per socket — the highest channel count of any current server CPU architecture.
• JEDEC DDR5 Standard Compliance: Fully compliant with JEDEC JESD79-5 DDR5 specification, ensuring broad interoperability across compliant server platforms from major OEMs.
• Server OEM Ecosystems: Validated for use in platforms from Dell PowerEdge, HPE ProLiant Gen11, Lenovo ThinkSystem, Supermicro, and Inspur server families supporting DDR5 RDIMMs.
• Operating System Support: Compatible with all major enterprise operating systems including Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Windows Server 2022, VMware vSphere 8.x, and Microsoft Hyper-V.
• RAS Feature Support: Supports advanced reliability features including memory mirroring, memory sparing, rank sparing, and patrol scrubbing when enabled by the platform firmware and BIOS.

Ideal Use Cases

The SK hynix 32GB DDR5-4800 ECC RDIMM is engineered for the most demanding enterprise and cloud workloads. Key deployment scenarios include:

• AI & Machine Learning Inference: High memory bandwidth is critical for serving large language models and neural network inference at scale. DDR5-4800 reduces memory fetch bottlenecks on CPU-based AI inference nodes and accelerator-adjacent memory pools.
• Virtualisation & Private Cloud (VMware / Hyper-V / KVM): Dense VM hosting requires maximum memory per socket. Populating servers with 32GB DDR5 RDIMMs enables high VM density with ample per-VM memory allocation and headroom for memory overcommit.
• In-Memory Databases (SAP HANA, Oracle TimesTen, Redis): In-memory database platforms depend entirely on DRAM bandwidth and capacity. DDR5-4800 provides the throughput floor required for sub-millisecond query response at scale.
• High-Performance Computing (HPC) & Simulation: Scientific computing, CFD simulation, and genomics workloads are frequently memory-bandwidth limited. DDR5 doubles available bandwidth compared to DDR4 systems, accelerating time-to-result.
• Real-Time Analytics & OLAP: Columnar analytics engines scanning hundreds of gigabytes of data per query benefit directly from the elevated memory bandwidth of DDR5 platforms populated with high-capacity RDIMMs.
• Cloud & Hyperscale Infrastructure: Hyperscale operators deploying high-density compute nodes for IaaS or PaaS workloads benefit from the power efficiency of DDR5 at 1.1V, reducing per-rack memory power consumption at scale.
• Edge Computing & Telco NFV: Network function virtualisation and edge AI deployments requiring ECC-grade reliability in compact form factors benefit from the density and error-correction features of this module.

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 worldwide. We maintain local stock of high-demand enterprise memory modules including DDR5 RDIMMs, enabling rapid fulfilment for data centre procurement teams, systems integrators, and cloud operators across Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain, Oman, and beyond. Our dedicated enterprise hardware specialists provide pre-sales compatibility consultation, helping you validate memory configurations against your specific server platforms before purchase. Omnixon operates within a transparent, authorised supply chain, ensuring that every unit we ship is genuine, traceable, and backed by manufacturer quality standards. For organisations building or expanding critical infrastructure in the region, Omnixon offers the reliability, technical depth, and regional presence to support your procurement with confidence.

Related Products & Ecosystem

To build a complete, high-performance server memory infrastructure, consider pairing this SK hynix DDR5 RDIMM with complementary products available from Omnixon's portfolio. Enterprise servers (including Intel Xeon and AMD EPYC-based platforms) provide the host platform for maximum DDR5 channel utilisation. Enterprise SSDs — particularly NVMe Gen4 and Gen5 drives — complement high-bandwidth memory systems by eliminating storage I/O bottlenecks in data-intensive workloads. For AI and HPC environments, NVIDIA GPU accelerators and high-bandwidth network adapters (100GbE/200GbE NICs) round out the compute node architecture. Network switches supporting low-latency, high-throughput fabrics ensure that memory bandwidth investments are not wasted on network bottlenecks. UPS and power protection solutions from the Omnixon portfolio safeguard the entire infrastructure investment in environments where power continuity is critical.