P64986-K21 HPE 64GB Dual Rank X4 Ddr5-6400mt/s Pc5-51200 Memory.

Category Overview: DDR5 Registered Server Memory

DDR5 Registered DIMMs (RDIMMs) are essential for businesses and data centers that require high memory bandwidth, stability, and scalability. Compared to DDR4, DDR5 delivers nearly double the data rate, more efficient power management, and an increase in bank groups and burst lengths, enabling better performance in parallel processing and multitasking environments.

Key Features of DDR5-6400 RDIMMs

• Higher bandwidth with up to 6400MT/s transfer rates
• Lower voltage consumption at just 1.1V
• Advanced on-die ECC for greater reliability
• Increased DIMM capacity options up to 128GB per module
• Support for dual independent 32-bit channels per DIMM

Product Specifics: HPE P64986-K21 64GB ECC Registered DDR5 RDIMM

The HPE P64986-K21 Smart Memory module is built to deliver uncompromising reliability and validated performance for mission-critical HPE ProLiant servers. This 64GB RDIMM features a Dual Rank (2Rx4) design, which offers optimal balance between capacity and performance in multi-channel server configurations. It supports a data rate of 6400MT/s and operates with a CAS latency of 46, ensuring ultra-fast response times for intensive applications.

Advantages of HPE Smart Memory Technology

HPE Smart Memory is a proprietary technology offered by Hewlett Packard Enterprise that ensures optimized performance, compatibility, and reliability. Unlike standard third-party memory modules, HPE Smart Memory undergoes rigorous testing and qualification processes to meet the exacting standards of HPE ProLiant and Apollo servers.

Performance and Compatibility Validation

HPE Smart Memory is tested with system-level workloads and firmware to guarantee seamless operation with HPE servers. Using certified memory like the P64986-K21 helps eliminate memory-related failures and reduces troubleshooting time significantly.

Firmware Integration and System Management Benefits

• Integrated with HPE Integrated Lights Out (iLO) for real-time diagnostics
• Enhanced predictive failure alerts and proactive fault notification
• Reduced downtime and maintenance windows
• Firmware and BIOS-level optimization for enhanced memory utilization

Greater Throughput and Efficiency

DDR5’s expanded memory banks and dual-channel architecture enable parallelism at a new scale, allowing for faster data retrieval and less memory bottlenecks. The HPE P64986-K21 capitalizes on this with exceptional speed and low latency.

Lower Power Consumption

At 1.1V, the P64986-K21 consumes less power than DDR4 equivalents, improving thermal efficiency and reducing overall energy costs in data centers — a vital factor for businesses focused on sustainability.

Ideal for Virtualization and Containerized Workloads

With 64GB per module, this RDIMM is ideal for running multiple virtual machines or containers per server, boosting the scalability and density of your IT infrastructure.

Compatibility with HPE Gen11 Server Platforms

The HPE P64986-K21 is optimized for use with HPE Gen11 ProLiant servers and is backward-compatible with select platforms that support DDR5 memory. It is critical to pair Smart Memory with the proper firmware and BIOS to unlock its full potential.

Validated Systems

• HPE ProLiant DL360 Gen11
• HPE ProLiant DL380 Gen11
• HPE ProLiant ML350 Gen11
• HPE Apollo 2000 Gen11

Memory Configuration Guidelines

When configuring HPE servers with DDR5 memory, it’s important to follow channel population guidelines to ensure peak memory performance. The P64986-K21 supports dual-rank configurations per channel and can be combined with additional modules to achieve memory capacities of up to 2TB, depending on the server model.

Use Cases for HPE 64GB DDR5 Smart Memory

This high-capacity 64GB DDR5-6400 module is ideal for a wide array of workloads. It supports environments that demand continuous uptime, fast data access, and large memory buffers.

Enterprise IT and Cloud Data Centers

Enterprises running large-scale data center operations benefit from the increased memory bandwidth and energy efficiency of this module. Its ability to handle high concurrency workloads makes it suitable for modern cloud-native and hybrid infrastructures.

High-Performance Computing (HPC)

Scientific simulations, financial modeling, and AI/ML tasks that involve large datasets require the low latency and high throughput of DDR5 memory. The P64986-K21 helps accelerate these compute-intensive processes.

Virtual Desktop Infrastructure (VDI)

Running multiple desktop instances per server requires high-density memory solutions. This 64GB module offers the perfect capacity and speed to support such deployments with reduced latency and greater user experience.

In-Memory Databases and Analytics

For SAP HANA and other in-memory database platforms, the ability to keep large datasets in active memory is crucial. The HPE P64986-K21 provides the memory density and speed needed to support real-time insights and analytics.

Reliability and Advanced Error Handling

Server memory failures can lead to data corruption, downtime, or even system crashes. The P64986-K21 incorporates advanced reliability features to safeguard your workloads.

On-die ECC and Register Buffers

Error-Correcting Code (ECC) is implemented directly on the memory die, ensuring early detection and correction of errors. Register buffers help maintain signal integrity across multiple memory modules and DIMM slots.

Thermal Sensors and Smart Monitoring

Integrated thermal sensors communicate with server firmware to dynamically adjust cooling systems, maintaining optimal operating temperatures and prolonging module lifespan.

Scalability and Future-Proofing with DDR5 Memory

As data workloads continue to grow, memory scalability is paramount. The 64GB DDR5 module enables IT administrators to scale memory capacity incrementally, supporting next-gen server applications and large-scale virtualization projects.

Designed for Longevity and Compatibility

With rigorous HPE validation and forward compatibility with evolving memory standards, this module is designed to remain relevant across multiple server lifecycles.

Environmental Compliance

• RoHS Compliant
• Low Halogen
• WEEE Compliant

Buying Guide and Best Practices

When selecting server memory, always verify platform compatibility, BIOS/firmware requirements, and intended workload characteristics. Using genuine HPE Smart Memory like the P64986-K21 ensures the best performance and support experience.

Installation Tips

• Install in matched pairs across channels for optimal bandwidth
• Use ESD protection during installation
• Update server BIOS to latest version before memory upgrade

Where to Buy

Purchase HPE P64986-K21 Smart Memory modules from authorized HPE resellers to guarantee authenticity and eligibility for HPE support. Avoid counterfeit or third-party modules, which may result in reduced performance or system instability.

Summary of Benefits: HPE P64986-K21 64GB DDR5 RDIMM

• 6400MT/s speed for next-gen workloads
• High-density 64GB capacity in dual-rank format
• Smart Memory-certified for full HPE system integration
• Lower power consumption at 1.1V
• Enhanced system reliability with ECC and thermal sensors
• Ideal for virtualization, AI/ML, analytics, and enterprise computing