P56435-B21 HPE 256GB DDR4-3200/pc4-25600 Octal-Rank Memory.

HPE P56435-B21 256GB DDR4-3200/PC4-25600 Octal-Rank Memory Overview

The HPE P56435-B21 is a high-capacity 256GB DDR4-3200/PC4-25600 Octal-Rank Load-Reduced Dual In-Line Memory Module (LRDIMM), specifically engineered for enterprise-grade servers and mission-critical IT environments. As a new system pull, this module has been extracted from never-deployed systems and comes with a 1 year replacement warranty, providing a cost-effective solution with enterprise-level reliability. Designed by Hewlett Packard Enterprise (HPE), this memory module ensures optimal performance, scalability, and energy efficiency for data centers, cloud computing platforms, virtualization clusters, and large-scale analytics workloads.

DDR4-3200/PC4-25600 Memory Architecture

Operating at 3200 MT/s (megatransfers per second), the DDR4-3200 standard—also designated as PC4-25600—delivers a maximum theoretical bandwidth of 25.6 GB/s per module. This is a significant performance boost over DDR3 and earlier DDR4 speeds, allowing for faster data access, improved multitasking capabilities, and lower latency in server operations. The HPE P56435-B21 adheres to JEDEC specifications, ensuring compatibility with industry-standard systems and Intel/AMD server processors that support DDR4 memory architecture.

Load-Reduced DIMM (LRDIMM) Benefits

LRDIMM modules like the P56435-B21 are designed with an advanced memory buffer that reduces the electrical load on memory controllers. This enables servers to populate more DIMMs per channel, thus achieving higher total memory capacities without compromising on stability. In large-scale server configurations, using Octal-Rank LRDIMMs ensures more consistent and scalable memory performance, crucial for enterprise workloads such as virtualization, real-time data processing, and in-memory databases.

Octal-Rank Configuration and Its Significance

An Octal-Rank configuration means that the memory module contains eight separate groups of DRAM chips, allowing for larger storage density per module. This design is essential for achieving high-capacity configurations such as 256GB on a single DIMM. The Octal-Rank setup works seamlessly with memory buffers to reduce noise and improve signal integrity across the memory channel, making it ideal for modern server environments demanding large memory footprints and high transaction throughput.

System Pull Memory: Cost-Efficiency and Reliability

System pull memory modules, such as this HPE P56435-B21, are extracted from unused or decommissioned new systems. They are fully functional and undergo thorough quality checks to ensure they meet original manufacturer standards. Choosing new system pull memory offers considerable cost savings without sacrificing performance or reliability. Backed by a 1 year replacement warranty, this category appeals to IT managers looking to optimize their infrastructure budgets without compromising on uptime or quality.

Testing and Validation Procedures

Each P56435-B21 module classified as a new system pull undergoes rigorous multi-stage testing, including burn-in tests, signal integrity verification, and functional benchmarking. These tests ensure that the modules are free of defects, compliant with HPE specifications, and ready for immediate deployment. The validation process guarantees system stability even in high-load environments such as clustered databases or virtual desktop infrastructure (VDI).

Compatibility with HPE Servers and Platforms

The HPE P56435-B21 memory module is optimized for compatibility with a broad range of HPE ProLiant and Apollo server systems. It works particularly well with Gen10 and Gen10 Plus platforms, leveraging advanced Intel Xeon Scalable processors and AMD EPYC CPUs that support high-speed DDR4 memory. Compatibility lists provided by HPE ensure that the P56435-B21 integrates seamlessly with popular server models, including DL380 Gen10, DL560 Gen10, and others that support LRDIMM configurations.

Performance Advantages of HPE 256GB DDR4-3200 Octal-Rank Memory

The massive 256GB capacity in a single module helps consolidate workloads, reduce system complexity, and increase memory density per server. This capability reduces the number of physical servers required in a deployment, leading to energy savings, lower cooling costs, and simplified IT management. High memory capacity also supports a greater number of virtual machines (VMs), allowing for more efficient use of server resources in a virtualized environment.

Latency, Bandwidth, and Throughput Optimization

With a data rate of 3200 MT/s and support for multi-rank buffering, the P56435-B21 minimizes latency and maximizes throughput. Servers equipped with these modules experience reduced I/O bottlenecks, faster boot times, and improved performance in memory-intensive applications. This includes enterprise resource planning (ERP), customer relationship management (CRM), and high-frequency trading systems.

Impact on Virtualization and Cloud Computing

Virtualization platforms like VMware vSphere, Microsoft Hyper-V, and KVM greatly benefit from high-capacity memory modules. The HPE P56435-B21 allows administrators to allocate more memory per virtual machine, improving overall responsiveness and reducing VM contention. In cloud environments, this leads to higher user satisfaction, improved performance SLAs, and better utilization of compute resources.

Energy Efficiency and Thermal Design

DDR4 memory, including the PC4-25600 standard, is designed to operate at lower voltages (1.2V compared to DDR3’s 1.5V), resulting in improved power efficiency and reduced heat output. The HPE P56435-B21 capitalizes on these advantages, featuring a thermally-optimized design with heat spreaders and load-reduction buffers. This ensures consistent thermal management in high-density rack environments, helping data centers meet green computing goals and reduce total cost of ownership (TCO).

Reduced Cooling Requirements

Lower power consumption translates into reduced heat generation, allowing for more efficient use of server cooling infrastructure. Organizations running multiple HPE P56435-B21 modules benefit from lowered air-conditioning needs, improved airflow within racks, and extended hardware lifespan due to reduced thermal stress.

Environmental Compliance and Sustainability

The module complies with major environmental standards, including RoHS and REACH. It supports HPE’s sustainability objectives by enabling longer lifecycle use of IT hardware through system pulls and re-certification. By using system-pull memory, organizations can reduce e-waste and support environmentally responsible IT strategies.

Use Cases and Application Scenarios

The HPE P56435-B21 256GB module is ideal for a variety of demanding IT applications, ranging from enterprise databases to AI/ML model training. Its large capacity and fast bandwidth make it particularly suited to:

• In-memory database platforms such as SAP HANA or Oracle TimesTen
• Virtualized server environments with high VM density
• Big Data analytics and Apache Hadoop/Spark workloads
• Artificial intelligence and machine learning frameworks
• Scientific computing and engineering simulations
• Media rendering and 3D modeling applications

Data Center Modernization

Modernizing data centers requires scalable memory solutions that are not only high-capacity but also energy-efficient and cost-effective. The HPE P56435-B21 meets all these requirements, offering a balance of performance, reliability, and sustainability that aligns with next-generation IT infrastructure planning.

Procurement Considerations

When purchasing the HPE P56435-B21 memory module, it’s important to verify authenticity, compatibility, and warranty status. Buyers should source modules from authorized or reputable vendors specializing in enterprise-grade components. Check for part numbers, manufacturer branding, and system pull designations to ensure genuine products.

The Choose System Pulls Over New Retail

System pulls offer the same quality and performance as retail-packaged modules but at a significantly lower price. They are ideal for budget-conscious businesses, IT refresh cycles, or scaling existing HPE server infrastructure without paying premium prices for brand-new parts. The 1 year replacement warranty adds a layer of security that makes system pulls an attractive procurement strategy.

Inventory Availability and Bulk Orders

System pull memory modules like the P56435-B21 are often available in bulk quantities, suitable for large-scale deployments or data center upgrades. Bulk pricing, combined with centralized procurement processes, reduces lead times and streamlines IT budgeting.

Packaging and Handling Best Practices

Modules are typically packaged in ESD-safe anti-static bags and cushioned containers to prevent damage during shipping. When installing system-pull memory, it’s recommended to follow electrostatic discharge prevention protocols and validate memory integrity using diagnostic tools post-installation.