HMCGM4MGBRB247N 96GB DDR5 Hynix Pc5-44800 Cl46 Ecc Registered 1.1v Dual Rank 288-pin RAM Memory Module

Product Highlights of Hynix HMCGM4MGBRB247N 96GB DDR5 Server Memory

The Hynix HMCGM4MGBRB247N is a high-capacity 96GB DDR5 ECC Registered server memory module designed for enterprise-class systems requiring maximum stability, superior bandwidth, and improved reliability. Built to operate at 5600MT/s with PC5-44800 standards, this module ensures advanced data integrity with ECC technology and enhances multitasking performance in mission-critical workloads.

General Specifications of Hynix HMCGM4MGBRB247N 96GB DDR5 RAM

• Brand: Hynix 
• Part Number: HMCGM4MGBRB247N
• Module Type: ECC Registered DIMM
• Capacity: 96GB
• Memory Technology: DDR5 SDRAM

Performance Characteristics

Engineered with dual-rank 2Rx4 architecture, this module is optimized for enhanced throughput and latency reduction. The combination of ECC error-correcting features and a CAS latency of CL46 makes it highly reliable for data-intensive computing.

• Data Transfer Rate: 5600MT/s
• Standard: DDR5-5600 / PC5-44800
• CAS Latency: CL46
• Error Checking: ECC for stability
• Rank Configuration: Dual-Rank (2Rx4)

Electrical and Signal Processing Details

With a low operating voltage of 1.10V, the module offers energy efficiency, reducing total system power consumption while maintaining peak performance. The registered signal processing further stabilizes communication between the memory and CPU for consistent data handling.

• Voltage Requirement: 1.10V
• Signal Type: Registered DIMM

Physical and Structural Design

The memory module features a standard 288-pin DIMM configuration, ensuring compatibility with a broad range of enterprise-grade motherboards and server platforms. Its precise build quality from SK Hynix guarantees long-term reliability under heavy operational loads.

• Form Factor: DIMM
• Number of Pins: 288

Key Benefits for Data Centers

Designed for cloud infrastructures, virtualized environments, and AI workloads, this DDR5 module provides:

• Massive 96GB capacity for large-scale operations
• Improved energy efficiency with reduced voltage
• Superior reliability with ECC error correction
• Enhanced bandwidth for demanding applications
• Server-optimized stability with registered architecture

Applications and Workload Suitability

This high-density DDR5 server memory is particularly suitable for:

• High-performance computing clusters
• Database management and transaction processing
• Virtualization and cloud hosting platforms
• Enterprise-grade AI, ML, and big data workloads
• Mission-critical business applications requiring 24/7 uptime

 Choose Hynix Server Memory

SK Hynix has a proven reputation for manufacturing reliable, enterprise-class memory solutions. The HMCGM4MGBRB247N 96GB DDR5 module is engineered with strict quality standards, offering businesses a trusted solution for scalability, energy savings, and stable performance in demanding server environments.

Core Overview of Hynix HMCGM4MGBRB247N 96GB DDR5-5600 PC5-44800 CL46 ECC Registered 1.1V Dual Rank 288-Pin RDIMM

The Hynix HMCGM4MGBRB247N 96GB DDR5 5600MT/s PC5-44800 CL46 ECC Registered Dual Rank 288-pin DIMM is a high-capacity, server-class memory module engineered to meet modern data-center and enterprise workload demands. As a DDR5 RDIMM, it integrates on-module power management, advanced ECC capabilities, and higher burst lengths to deliver more bandwidth per watt and stronger reliability than DDR4 generations. With a nominal 1.1V operating voltage, 5600MT/s data rate, and CL46 primary latency, this 96GB stick provides a compelling blend of density and speed for dual- and multi-socket platforms running virtualization stacks, large in-memory databases, content delivery, analytics engines, AI inference pipelines, and cloud-native microservices.

Positioned squarely in the server RDIMM subcategory, the HMCGM4MGBRB247N pairs Dual Rank organization with on-module Register (RCD) buffering to improve signal integrity across populated channels. This approach supports high slot fill rates—vital for dense compute nodes—while the 288-pin layout ensures broad compatibility with current-generation server motherboards certified for DDR5 Registered DIMMs. Whether you are upgrading a single node or standardizing memory configurations across a fleet, this module provides the performance headroom and reliability controls expected for mission-critical environments.

Key Technical Attributes and Why They Matter

DDR5 Architecture Enhancements in the HMCGM4MGBRB247N

DDR5 represents a significant architectural step beyond DDR4, and the HMCGM4MGBRB247N leverages these changes to elevate real-world throughput and determinism:

• Higher Bank Count & Bank Groups: More banks and refined bank group architectures support better concurrency and reduce bank conflicts, enabling higher effective bandwidth for mixed workloads.
• On-Die ECC (ODECC) + Module-Level ECC: DDR5 adds ODECC to correct internal array errors before data leaves the DRAM die. Combined with module-level ECC on the RDIMM, you get layered protection against soft errors.
• PMIC On-Module: A Power Management IC (PMIC) moves voltage regulation onto the module for improved power delivery granularity and noise reduction, crucial at 5600MT/s speeds.
• Greater Prefetch & Burst Length: With longer burst lengths, the memory can transfer more data per operation, which is beneficial for streaming workloads and high-throughput services.

Speed Grade: 5600MT/s (PC5-44800)

The 5600MT/s data rate corresponds to a theoretical peak bandwidth of 44.8GB/s per module under ideal conditions. In multi-channel, multi-DIMM configurations, this scales linearly, assuming the CPU’s memory controller and topology are optimized. For applications like columnar analytics, real-time event processing, or HFT risk calculations, higher channel bandwidth translates directly into reduced query latency and faster batch windows.

Latency Profile: CL46 and Real-World Performance

While CL46 might seem numerically higher than DDR4 timings, DDR5’s increased frequency means the actual nanosecond latency is competitive. The HMCGM4MGBRB247N’s timing profile balances high transfer rates with predictable access times—particularly important for latency-sensitive microservices and real-time inference where tail latency, not just averages, dictates user experience.

ECC Registered (RDIMM) Reliability

As an ECC Registered DIMM, this module uses an on-board register (RCD) to buffer the address/command bus, improving signal integrity especially in high-density, multi-DIMM channel configurations. ECC continuously detects and corrects single-bit errors and flags multi-bit anomalies, reducing the risk of data corruption and unexpected crashes. In revenue-critical workloads—payments, transaction logging, customer personalization engines—ECC is not optional; it’s foundational for compliance and uptime.

1.1V Operating Voltage and Power Efficiency

DDR5’s standard 1.1V operating voltage, paired with the PMIC, curbs power draw while sustaining higher frequencies. Lower per-DIMM power means thermal headroom to populate more slots or boost CPU TDP in the same rack power envelope. For colocation facilities where power is a major OPEX line item, the HMCGM4MGBRB247N’s efficiency contributes to a better performance-per-watt profile.

Subcategory Context: Server DDR5 RDIMM vs. Alternatives

RDIMM vs. UDIMM vs. LRDIMM

• RDIMM (Registered DIMM): Uses an RCD to buffer address/command lines. Ideal for balanced performance and capacity in mainstream dual- and quad-socket servers. The HMCGM4MGBRB247N is an RDIMM.
• UDIMM (Unbuffered ECC): Typically lower capacity and fewer ranks per DIMM; seen in workstations and entry servers. Not suitable for extreme density.
• LRDIMM (Load-Reduced DIMM): Adds a buffer for data lines to support even higher capacities and ranks per channel, often at a premium and with slightly different latency characteristics.

Dual Rank Advantages

Dual Rank organization improves bank-level parallelism and can enhance sustained throughput in many real-world scenarios. Memory controllers can interleave across ranks to reduce idle cycles. For virtualization clusters where dozens of guests each produce staggered memory access patterns, dual rank can yield smoother aggregate bandwidth compared to single-rank modules.

Compatibility and Platform Guidance

CPU Generations and Chipsets

The Hynix HMCGM4MGBRB247N 96GB DDR5-5600 RDIMM targets server platforms that officially support DDR5 Registered DIMMs, including—but not limited to—systems built on recent Intel Xeon Scalable and AMD EPYC generations. Check your motherboard vendor’s Qualified Vendor List (QVL) and CPU memory controller specs to confirm the maximum supported data rate and DIMM population rules for 96GB modules per slot.

Channel Population Rules

Most enterprise motherboards provide multiple channels per CPU socket. To maximize bandwidth, populate DIMMs symmetrically across channels. If your board supports mixed capacities, keep ranks balanced per channel when possible. Running at 5600MT/s typically requires adherence to DIMM-per-channel (DPC) limits; adding more DIMMs per channel may down-clock the data rate to maintain signal integrity.

Firmware and BIOS Considerations

Ensure the latest BIOS/UEFI and BMC firmware are installed to unlock updated memory microcode, PMIC profiles, and training algorithms. Many vendors improve DDR5 timings and compatibility over time, especially for non-standard capacities like 96GB.

Capacity Planning with 96GB RDIMMs

A 96GB stick offers a pragmatic midpoint between 64GB and 128GB modules. It helps you reach clean totals (e.g., 384GB with 4×96GB, 768GB with 8×96GB) while controlling cost per GB. This is attractive for:

• Virtualization hosts: Fit more vCPUs and containers per node without stepping up to pricier 128GB DIMMs.
• In-memory caching tiers: Redis/Memcached layers benefit from DRAM density; 96GB modules push larger hot datasets into memory.
• Analytics and BI: Columnar engines, Spark executors, and ETL pipelines see fewer spill-to-disk events with larger RAM footprints.
• Web and microservices: More headroom for JVM heaps, Node.js buffers, and Go service caches reduces GC pressure and tail latencies.

Performance Tuning Tips for HMCGM4MGBRB247N

Interleaving and NUMA Awareness

Enabling channel interleaving and distributing DIMMs uniformly per socket allows CPUs to access memory with predictable latency. Combine with NUMA-aware scheduling (Kubernetes, systemd-numa-policy, or hypervisor pinning) to keep workloads close to their memory. Avoid cross-socket memory access where possible to minimize remote latency penalties.

Memory Training and Stability

DDR5 training can take longer than DDR4, especially at 5600MT/s. After configuration changes, allow full cold boots so the IMC can calibrate read/write leveling and command timings. If stability issues arise at maximum speed with many DIMMs per channel, consider one step lower data rate as a conservative baseline, or reduce the DPC count to preserve 5600MT/s.

Thermal Design and Airflow

High-density RDIMMs can run warm under load. Use chassis with directed airflow across memory banks. Ensure front-to-back airflow is not obstructed, keep cable bundles tidy, and replace failed fans promptly. Monitoring DIMM thermal sensors through the BMC aids proactive maintenance.

Reliability, Availability, and Serviceability (RAS)

ECC and Data Integrity Path

The HMCGM4MGBRB247N supports SECDED (Single-Error Correction, Double-Error Detection) at the module level along with DDR5’s On-Die ECC. Many server platforms also expose error scrubbing and patrol scrubbing features—when enabled, they scan memory proactively to detect and correct bit flips. Log review via IPMI/BMC or OS tools helps identify DIMMs that may need replacement before issues escalate.

Register and PMIC Robustness

The RCD (Register Clock Driver) stabilizes high-speed signaling, while the PMIC ensures consistent on-module power rails. Together they reduce jitter and voltage droop that can cause intermittent faults at high speeds. For deployments requiring five-nine uptime, this electrical stability is a key differentiator.

Workload-Specific Benefits

Virtualization & Containerization

Consolidating more VMs or containers per node requires both capacity and consistency. The 96GB density improves consolidation ratios; the 5600MT/s rate improves memory transaction throughput; and ECC ensures guest isolation isn’t undermined by silent data corruption. The result is higher utilization without sacrificing stability.

Databases and In-Memory Stores

OLTP and OLAP engines benefit from larger buffer pools and page caches. With the HMCGM4MGBRB247N, hot partitions and frequently accessed indexes remain in memory longer, reducing storage I/O and improving query response. For Redis, Aerospike, and Memgraph, DRAM density directly translates into bigger in-RAM datasets and fewer evictions.

AI Inference, Feature Stores, and Real-Time Analytics

While GPUs handle many training workloads, CPU-centric inference and feature lookups often bottleneck on memory. High-bandwidth DDR5 at 5600MT/s accelerates feature vector retrieval and stream processing, keeping CPU pipelines fed. Pairing multiple HMCGM4MGBRB247N modules across channels improves tokens-per-second for LLM serving and reduces tail latency on bursty traffic.

High-Performance Computing (HPC)

Many HPC codes—CFD, FEA, molecular dynamics—are memory bandwidth constrained. Populate each channel with HMCGM4MGBRB247N modules to lift the sustainable bandwidth ceiling. The dual-rank design helps with parallelism, while ECC protects lengthy simulations from silent errors that could invalidate results hours into a run.

Physical and Electrical Characteristics

Form Factor and Pinout

This module follows the standard 288-pin DDR5 RDIMM outline with keying to prevent mis-insertion. Always verify the RDIMM notch aligns with the slot key and avoid flexing the PCB during installation.

Voltage and Power Draw

Operating at 1.1V with on-module regulation improves efficiency and reduces board-level power noise. Actual power draw varies with workload, refresh operations, and timing bins. Data-center operators should include DIMM power in their capacity planning and thermal models, especially at high socket counts.

When the System Boots at a Lower Speed

If the HMCGM4MGBRB247N trains below 5600MT/s, check DPC count, rank balance, and whether mixed DIMM types are installed. Some CPUs down-clock when channels are fully populated. Removing one DIMM per channel or matching ranks can restore higher speeds.

ECC Error Logs

Intermittent correctable errors (CEs) may occur under heavy thermal stress. Improve airflow, reseat the module, and review scrubbing intervals. A spike in uncorrectable errors (UEs) indicates a DIMM or slot issue; isolate by moving modules between slots or sockets.

Firmware Profiles and Memory Training Retries

Some server BIOS offer Memory Training Retry parameters. Increasing retry counts or relaxing secondary timings can stabilize marginal topologies while retaining close to peak throughput.

Security and Compliance Considerations

The HMCGM4MGBRB247N supports platform-level security features exposed by server vendors. While the DIMM itself does not encrypt contents, its reliable operation under ECC is essential to secure compute flows: failed queries, panics, or data corruption events can introduce risk in regulated environments. For PCI-DSS, HIPAA, or SOC 2 workloads, stable memory is a compliance enabler.

Sustainability and Lifecycle

Performance-per-Watt and Rack Density

By pairing 96GB density with 5600MT/s speed at 1.1V, you can achieve higher per-node performance without exceeding typical power envelopes. This reduces the number of nodes required for a given workload, lowering embodied carbon and operational emissions through consolidation.

Lifecycle Management

Track DIMM serials in your CMDB. Plan sparing strategies—keep a few HMCGM4MGBRB247N units per rack or per cluster for rapid replacement. Regular firmware updates and thermal inspections extend service life and minimize unscheduled downtime.

Use-Case Playbooks

Scaling a Kubernetes Cluster

For an 8-node cluster running mixed microservices, deploying two Hynix HMCGM4MGBRB247N modules per node provides 192GB per node without occupying every slot. This leaves room for future growth while enabling tighter pod bin-packing and reducing out-of-memory throttling. Combine with topologySpreadConstraints and memory requests/limits to maintain predictable SLOs.

In-Memory Analytics

A BI stack (Presto/Trino + Spark) benefits from larger executor heaps. Using four 96GB RDIMMs per analytics node (384GB) increases partition concurrency and reduces shuffle spills, shortening job runtimes and improving dashboard freshness for end users.

Virtual Desktop Infrastructure (VDI)

VDI deployments are sensitive to login storms and sustained concurrency. With 96GB modules, host memory can be partitioned cleanly per desktop pool. Faster DDR5 speeds smooth bursty IO from profile loads and application launches, improving user experience during peak hours.

Comparative Positioning

96GB vs. 64GB and 128GB RDIMMs

• Versus 64GB: 96GB increases capacity per slot by 50%, allowing fewer modules to achieve the same total memory, often with better thermals and channel efficiency.
• Versus 128GB: 96GB typically offers better cost per GB while still hitting high-capacity targets; it can also maintain higher data rates at certain DPC counts compared with very high-density DIMMs.

DDR5-5600 vs. Lower Speed Grades

At the same capacity, the 5600MT/s bin improves bandwidth and can lower per-transaction latency in nanoseconds versus 4800/5200 bins. The benefit is especially apparent under high parallelism when channels and ranks are fully utilized.

Procurement and Fleet Standardization

SKU Consistency Across Racks

Standardizing on HMCGM4MGBRB247N simplifies spares management and reduces configuration drift. With consistent memory characteristics, automated provisioning (Ansible, Terraform, or vendor tools) can assume stable performance, streamlining capacity planning models.

Warranty and RMA Strategy

Maintain a buffer stock of identical part numbers to minimize MTTR when a module triggers repeated CEs or UEs. Keep installation logs that map serials to hostnames to accelerate root cause analysis.

Secondary Keyword Themes

• ECC Registered 96GB DDR5 DIMM for data integrity
• DDR5-5600 server memory with PMIC and On-Die ECC
• PC5-44800 CL46 dual rank RDIMM for rack servers
• 1.1V power-efficient DDR5 RAM for data centers

Frequently Asked Questions

Is the HMCGM4MGBRB247N compatible with my server?

If your platform supports DDR5 ECC Registered DIMMs and lists support for 96GB modules, it is likely compatible. Confirm with the motherboard QVL and CPU memory controller documentation.

Can I mix this 96GB RDIMM with other capacities

Many servers allow mixed capacities, but optimal performance comes from matched capacities and ranks per channel. Mixing may reduce the achievable data rate or affect interleaving.

 Performance benefit should I expect moving to DDR5-5600

Expect higher sustained bandwidth, improved concurrency through more banks and longer bursts, and better performance-per-watt due to 1.1V operation and PMIC-based regulation.

Is ECC really necessary

For servers, yes. ECC prevents silent data corruption and reduces downtime. It is especially critical for databases, financial workloads, and any service where integrity and uptime matter.

How many HMCGM4MGBRB247N modules can I install per channel

Refer to the server manual for DIMMs per channel (DPC) limits at 5600MT/s. Adding more DIMMs per channel can reduce the final trained speed to maintain signal integrity.

Configuration Examples

Balanced Dual-Socket Build

2× CPUs with 8 channels each, populated with 1× HMCGM4MGBRB247N per channel, yields 1536GB total (16×96GB). This maximizes bandwidth with one DPC while maintaining top speed bins on many platforms.

Cost-Optimized Expansion

If your node currently runs 64GB modules at lower speeds, replacing half the slots with 96GB HMCGM4MGBRB247N can increase capacity significantly while improving bandwidth—often without needing to replace every module at once.

Operational Monitoring

Metrics to Watch

• Memory Bandwidth Utilization: Verify channels approach expected throughput under load.
• ECC Error Counters: Track CEs and UEs; investigate anomalies promptly.
• DIMM Temperature: Keep within vendor-recommended limits to avoid throttling.
• Training/POST Logs: Monitor for retraining events or speed drops after reboots.

Choose Hynix HMCGM4MGBRB247N for Enterprise

Quality, Binning, and Consistency

Hynix’s manufacturing process, combined with tight binning for 5600MT/s and CL46, ensures consistent lot-to-lot performance. For operators deploying hundreds or thousands of modules, consistency reduces variance in capacity planning and performance testing.

Future-Ready Architecture

As CPU generations advance, memory bandwidth becomes even more critical to hit core utilization targets. Investing in DDR5-5600 RDIMMs positions your infrastructure to capitalize on newer CPUs without immediate memory replacement.

Best Practices Checklist

• Verify DDR5 RDIMM support and 96GB compatibility in platform documentation.
• Update BIOS/BMC to latest versions before installation.
• Populate channels symmetrically; aim for one DPC to maximize speed when possible.
• Enable memory interleaving and NUMA-aware workload placement.
• Monitor ECC logs and thermals; maintain directed airflow across DIMM banks.
• Document serials and slot locations for rapid RMA handling.

Terminology Quick Reference

PC5-44800

Marketing nomenclature equating to DDR5-5600 with a maximum theoretical transfer rate of 44.8GB/s per module.

CL46

Primary CAS latency timing. In combination with other timings and the 5600MT/s clock, it informs real-world access latency in nanoseconds.

ECC Registered (RDIMM)

A module type with an on-board register for address/command buffering and full ECC for data integrity. Mandatory in most server platforms.

Dual Rank

Two ranks of DRAM on the module allow interleaving across ranks for improved parallelism and sustained bandwidth.

PMIC

The on-module power management integrated circuit that regulates power locally, improving stability at high speeds and reducing board-level noise.

Practical Deployment Scenarios

Edge and Telco

In edge compute and telco MEC nodes, space and power are constrained. The HMCGM4MGBRB247N provides high density per slot, enabling compact 1U/2U nodes to host real-time packet inspection, CDN caching, or RAN control applications with minimal latency.

Content Delivery & Streaming

For CDN and streaming control planes, larger DRAM caches decrease backend origin hits and smooth spikes in demand. DDR5-5600 keeps metadata and segment indexes hot for rapid retrieval.

Financial Services

Risk engines, order books, and pricing services push memory bandwidth and latency. Dual-rank 5600MT/s RDIMMs help sustain deterministic response under bursty loads while ECC ensures integrity for audit trails.

Integration With Existing Infrastructure

Mixed-Generation Upgrades

Transitioning from DDR4 to DDR5 requires platforms designed for DDR5; modules are not cross-compatible. However, once on a DDR5 platform, progressively moving to 96GB RDIMMs can increase capacity without wholesale server replacement.

Automation and Configuration Management

Use Ansible or vendor tooling to validate DIMM presence, speed, and error counters during provisioning. Automating these checks ensures the HMCGM4MGBRB247N modules operate at intended specs across large fleets.

Latency-Sensitive Design Patterns

Heap Sizing and GC Tuning

For JVM services, allocate heap sizes that balance GC pause times with memory locality. With 96GB modules, services can reserve generous heaps without triggering frequent major GCs. Combine with G1/ZGC configuration to minimize tail latencies.

Pinning and Isolation

Pin VMs or containers to the same NUMA node as their primary memory. Use cgroups and CPU sets to avoid cross-socket thrashing, preserving the advantages of 5600MT/s local memory bandwidth.

Quality Assurance Checklist for Data-Center Rollouts

• Lab test the HMCGM4MGBRB247N in representative workloads (database replay, cache hit/miss traces).
• Measure thermal behavior at sustained load; validate airflow reserves.
• Confirm ECC error scrubbing policy and alerting thresholds.
• Document trained speeds at 1 DPC and 2 DPC; record any down-bin conditions.
• Create a golden image that includes firmware versions known to perform well with these DIMMs.

Capacity Math Examples

Single-Socket Server

With 8 memory channels and 1 DPC using HMCGM4MGBRB247N, total memory equals 768GB (8×96GB) at up to 5600MT/s, ideal for dense cache layers or medium data warehouses.

Dual-Socket Server

With 16 channels total and 1 DPC, total memory equals 1536GB (16×96GB). This configuration emphasizes bandwidth and capacity simultaneously, supporting high-throughput analytics and AI inference farms.

Operational Economics

Cost per GB vs. Node Count

Increasing per-node memory with 96GB RDIMMs can reduce the number of servers required for a target workload, cutting licensing, rack space, and power costs, while simplifying management and patch cadence.

Final Notes on the Hynix HMCGM4MGBRB247N Feature Set

The Hynix HMCGM4MGBRB247N 96GB DDR5 5600MT/s PC5-44800 CL46 ECC Registered 1.1V Dual Rank 288-pin RDIMM occupies a compelling niche: enough capacity for serious consolidation, a speed grade that unlocks the promise of DDR5, and enterprise-grade reliability through ECC and RCD buffering. For organizations upgrading to modern server platforms, it is a strategic building block for dependable, high-bandwidth memory configurations.