P73446-B21 HPE 256GB Ddr5-6400MT/s PC5-51200 Cl60 Memory.

HPE P73446-B21 256GB DDR5-6400MT/s PC5-51200 CL60 Memory – Category Overview

The HPE P73446-B21 256GB DDR5-6400MT/s PC5-51200 CL60 memory module represents the cutting edge of enterprise-grade performance, efficiency, and reliability. Engineered for the demands of today’s data-driven environments, this memory solution is part of Hewlett Packard Enterprise’s advanced server memory portfolio. Sold new sealed in box (NIB), it guarantees optimal performance in next-generation HPE servers and mission-critical workloads.

Advanced DDR5 Technology for Next-Level Performance

DDR5 (Double Data Rate 5) SDRAM brings a substantial upgrade over its predecessor DDR4, delivering double the bandwidth and improved power efficiency. The HPE P73446-B21 module operates at 6400MT/s and conforms to the PC5-51200 standard, ensuring peak throughput for memory-intensive operations.

Benefits of DDR5 Architecture in HPE Server Memory

• Twice the data transfer rate of DDR4 for superior performance scalability.
• On-die ECC (Error-Correcting Code) for enhanced data integrity.
• Optimized channel architecture with two independent 32-bit subchannels per DIMM.
• Reduced voltage requirements (1.1V vs 1.2V) for lower power consumption.

Capacity and Bandwidth: 256GB at 6400MT/s

With a massive 256GB capacity per DIMM and transfer speeds of 6400MT/s, the HPE P73446-B21 module is ideal for high-performance computing (HPC), virtualization, big data analytics, and in-memory databases. The PC5-51200 rating designates a theoretical peak bandwidth of 51.2 GB/s, making it suitable for data centers pushing the limits of throughput.

Workload Optimization and Scalability

This memory module is not just about speed and size—it is engineered to scale alongside evolving workloads. Large virtual machines, AI/ML datasets, and SAP HANA applications can all benefit from the higher bandwidth and memory density offered by this product.

Server Compatibility and Use Cases

The P73446-B21 is designed for compatibility with HPE Gen11 servers such as HPE ProLiant DL380 Gen11, DL360 Gen11, and HPE Synergy systems. Whether you're deploying this in a cloud, enterprise, or academic environment, it ensures consistent uptime and performance.

Common Use Cases and Deployment Scenarios

• Enterprise Databases (e.g., Oracle, Microsoft SQL Server, SAP HANA)
• Virtual Desktop Infrastructure (VDI)
• Artificial Intelligence and Machine Learning
• Private Cloud and Hyperconverged Infrastructure
• Scientific Computing and Financial Modeling

Memory Density Benefits in Virtualization

In virtualized environments, memory is a critical resource. The 256GB capacity enables the deployment of more VMs per server, increasing ROI and reducing total cost of ownership (TCO). This supports consolidation strategies and scalability for future growth.

Reliability, Availability, and Serviceability (RAS) Features

HPE memory is renowned for its robust RAS features. The P73446-B21 includes advanced error detection and correction, memory scrubbing, and support for predictive failure analysis, minimizing downtime and protecting mission-critical applications.

ECC and Data Integrity Features

• On-Die ECC: Corrects single-bit errors automatically
• Parity Checks: Enhanced signal accuracy between memory controller and DIMM
• Thermal Sensors: Embedded monitoring for dynamic thermal management

Firmware Compatibility and Updates

Seamless firmware updates ensure the P73446-B21 module remains compatible with the latest HPE server BIOS versions and UEFI standards. HPE Integrated Lights-Out (iLO) helps automate and manage firmware deployment securely.

Form Factor and Configuration Details

The HPE P73446-B21 is a standard DDR5 RDIMM (Registered DIMM), which balances performance and stability in enterprise configurations. It is optimized for 8-channel and 12-channel DDR5 architectures found in newer HPE server platforms.

Latency and Timing Characteristics

With a CAS latency of CL60, the module offers a balanced profile between high-speed access and energy-efficient operation. This makes it well-suited for low-latency requirements such as online transaction processing (OLTP) and high-frequency trading.

Thermal Design Power and Efficiency

Operating at 1.1V, DDR5 modules like the P73446-B21 consume less power per bit transferred compared to DDR4. Lower power draw leads to reduced heat output and cooling requirements, optimizing overall data center energy efficiency.

Authenticity Verification

Authentic HPE parts can be verified using serial number validation tools available through the HPE iLO portal. Counterfeit components are a growing concern, and NIB parts reduce risk while maintaining infrastructure compliance.

Server Slot Population Rules

HPE Gen11 servers require memory modules to be populated in specific channels for optimal interleaving and performance. Refer to the server's user guide or HPE Insight Diagnostics to ensure compatibility and compliance with supported configurations.

Safe Handling and ESD Precautions

• Always wear a grounding strap when handling DIMMs.
• Store unused modules in anti-static containers.
• Keep modules away from direct sunlight and humidity.

Inventory, Supply Chain, and Availability

The HPE P73446-B21 is typically in high demand due to its specifications. Businesses planning memory upgrades or server rollouts should evaluate availability across HPE-authorized distributors and secure bulk inventory in advance.

Lead Times and Bulk Order Planning

For large deployments, bulk procurement planning is recommended. Memory supply chains are often impacted by silicon shortages and market volatility. Ordering new sealed in box (NIB) units ensures full traceability and warranty tracking.

Global Distribution Channels

HPE partners, resellers, and enterprise distributors worldwide carry the P73446-B21. Authorized resellers provide full documentation, sealed packaging, and access to HPE support contracts.

Temperature and Humidity Ranges

• Operating Temperature: 0°C to 85°C
• Storage Temperature: -40°C to 125°C
• Relative Humidity: 10% to 90% non-condensing