500666-B21 HPE 16GB 1066mhz Pc3-8500 DDR3 Memory Module

Manufacturer Details

• Manufacturer: HP
• Part Number: 500666-B21
• Product Name: 16GB DDR3 SDRAM Memory Module

Technical Specifications

• Total Storage Capacity: 16GB
• Memory Technology: DDR3 SDRAM
• Memory Module: 1 x 16GB
• Bus Speed: 1066MHz DDR3-1066/PC3-8500

Performance and Reliability

• RAM Features: Quad Rank
• Data Integrity: ECC (Error-Correcting Code)
• Buffered/Registered: Registered
• Component Rank: 4Rx4
• CAS Latency: CL7
• Pin Count: 240-Pin
• Operating Voltage: 1.5V

Compatibility

• DL160 G6
• DL180 G6
• DL360 G6
• DL370 G6
• DL380 G6
• DL1000 / DL170h G6
• DL165 G7
• DL360 G7
• DL385 G7
• DL380 G7
• DL580 G7
• DL585 G7
• DL980 G7

HP ProLiant ML Servers Series

• ML350 G6
• ML370 G6

HP BladeSystem ProLiant Server Blades

• BL280c G6
• BL460c G6
• BL490c G6
• BL2x220c G6 Server Blade
• BL465c G7
• BL685c G7
• BL460c G7

HP ProLiant SL Servers Series

• SL160z G6
• SL170z G6
• SL2x170z G6
• SL165z G7
• SL390s G7
• WS460c G6

HP 500666-B21 16GB DDR3 SDRAM DIMM Genuine Memory 

The HP 500666-B21 16GB 1066MHz PC3-8500 CL7 ECC Registered Quad Rank DDR3 SDRAM DIMM Genuine HP Memory represents a specialized category of server-grade memory designed to support enterprise computing environments that require consistent performance, high reliability, and long-term stability. Built to meet stringent HP standards, this 16GB module offers advanced capabilities suited for mission-critical applications, high-density virtualization, and data-intensive workloads where memory speed, error correction, and durability play essential roles in operational efficiency. As part of the DDR3 ECC Registered memory category, it offers a combination of speed and data integrity features that are vital for servers, workstations, and IT infrastructures running complex tasks, multi-user operations, and database applications. This memory module aligns with the growing demand for scalable and optimized server performance, providing a dependable solution for environments prioritizing uptime, data accuracy, and consistent throughput.

Designed for compatibility with select HP ProLiant servers and other HP enterprise systems, this memory type forms an integral part of the larger ECC Registered DDR3 memory market, which emphasizes advanced error correction capabilities and registered buffering to offload electrical loading from the memory controller. The 500666-B21 model is engineered to deliver exceptional performance in systems that require support for high-density memory configurations while maintaining signal integrity and dependable data transmission. Its quad-rank architecture helps boost maximum memory capacity within supported systems, making it particularly useful for virtualization hosts, cloud computing setups, and high-volume transaction environments. This category of memory aims to provide server administrators and IT decision-makers with a strategic upgrade path that enhances responsiveness, reduces latency, and equips servers with the capacity to handle demanding multi-threaded processing operations.

Features of HP 500666-B21 ECC Registered DDR3 Memory 

The HP 500666-B21 memory module features a 16GB capacity, which provides substantial memory resources for systems that need to handle simultaneous processes, virtual machines, advanced analytics, and storage management tasks. At a speed of 1066MHz, this PC3-8500 memory module offers balanced performance suitable for a range of enterprise use cases, delivering dependable throughput for applications that rely heavily on memory access and data retrieval. The CL7 latency rating enhances responsiveness by providing efficient data transfer cycles that contribute to smoother task completion in demanding server environments.

Its ECC (Error-Correcting Code) mechanism distinguishes it from non-ECC memory products, offering real-time error detection and correction that reduces the risk of data corruption, system crashes, and unplanned downtime. ECC technology is especially important in enterprise infrastructures where data accuracy and system reliability are paramount. The Registered (RDIMM) design includes a register component that stabilizes electrical signals, ensuring reliable performance when multiple memory modules are deployed within the same system. This buffered architecture enables higher memory capacity scalability while maintaining optimal data signaling across the memory bus.

The quad-rank layout further enhances supported memory densities, providing an efficient structure for maximizing total system memory without compromising output quality. Quad-rank modules allow servers to support greater overall memory capacity while maintaining bandwidth efficiency. Together, these features create a memory module that is optimized for demanding computational environments, allowing businesses to expand their hardware potential with reliable performance components built specifically for HP platforms.

Benefits of Using Genuine HP Server Memory Components

Choosing Genuine HP memory components such as the HP 500666-B21 16GB module ensures that server infrastructures benefit from rigorous testing, validated compatibility, and long-term reliability standards that are critical in professional IT environments. Genuine HP memory undergoes extensive quality control processes and is certified for performance across supported HP server models. This eliminates the uncertainty associated with third-party or unverified memory components, reducing the risk of system incompatibilities, memory failures, and warranty conflicts.

Another advantage of investing in Genuine HP Registered DDR3 ECC memory is its seamless integration with system firmware and HP diagnostic tools, enabling server administrators to monitor memory health, detect issues, and perform updates with confidence. This synergy enhances system uptime and reduces maintenance overhead, particularly in environments operating around the clock. Genuine HP memory also ensures that thermal profiles, electrical performance, and load distribution are optimized to meet HP engineering specifications. This leads to improved system stability, reduced heat generation, and consistent operation under heavy workloads.

Additionally, leveraging manufacturer-certified memory helps protect long-term infrastructure investments. Genuine HP modules offer reliable performance that can extend the life cycle of HP servers while enabling cost-effective scalability. This is particularly useful for businesses aiming to prolong hardware usability without sacrificing performance, allowing incremental upgrades as organizational requirements evolve.

Use Cases for HP 16GB Registered ECC DDR3 Memory

The HP 500666-B21 memory module is well-suited for a wide range of enterprise applications that require robust memory performance and high data integrity. One of the primary use cases involves virtualization and cloud computing environments where multiple virtual machines operate concurrently on a single server. The 16GB capacity and quad-rank architecture support memory-intensive virtualization workloads, enabling smoother operation, faster application response times, and improved resource allocation across VMs.

Another key use case involves database servers and transactional systems that process large volumes of real-time data. ECC Registered memory supports these environments by protecting data accuracy and reducing the chance of system errors that can disrupt operations. The module’s 1066MHz speed is ideal for server applications that require consistent memory access cycles to handle indexing, queries, and real-time data processing.

High-performance computing tasks such as scientific modeling, engineering simulations, and data analytics also benefit from the reliability and scalability of this memory category. The ability to sustain performance under sustained load makes the 500666-B21 suitable for research labs, development teams, and organizations running complex computational applications. Additionally, enterprise resource planning (ERP), customer relationship management (CRM), business intelligence, and digital content production environments can leverage the increased memory capacity to accelerate workflows and support multitasking.

Compatibility

The HP 500666-B21 16GB ECC Registered DDR3 memory module is designed to be compatible with a variety of HP ProLiant servers and workstation platforms that support DDR3 RDIMM architecture. Compatibility is a crucial factor in server memory selection, as proper pairing ensures optimal performance and prevents potential issues such as boot failures, instability, or degraded performance. Many HP servers, particularly those within the ProLiant G6 and G7 families, utilize DDR3 Registered memory configurations, making this module a suitable upgrade option for organizations seeking to enhance system capability without replacing entire hardware units.

Understanding the compatibility requirements of supported platforms involves reviewing system memory limits, rank configurations, slot availability, and speed requirements. This module’s quad-rank design may influence the maximum number of modules that can be installed per channel or per system, depending on the motherboard architecture. Ensuring that memory configurations adhere to HP guidelines allows administrators to optimize memory population strategies and achieve balanced performance across channels.

By selecting memory specifically engineered for HP platforms, organizations can maximize system efficiency and ensure alignment with firmware, BIOS updates, and diagnostic utilities tailored for HP systems. This helps prevent conflicts and ensures that system performance remains consistent across a variety of workload scenarios.

Performance Characteristics of PC3-8500 1066MHz Server Memory

The PC3-8500 1066MHz specification of the HP 500666-B21 identifies it as a DDR3 memory module capable of delivering stable and efficient throughput at 1066 million transfers per second. Although higher frequency DDR3 modules exist, the 1066MHz speed strikes a balance between stability, power efficiency, and reliable data movement in server environments. The CL7 latency rating supports efficient access cycles, helping reduce the time required to access stored information and improving overall responsiveness for memory-dependent operations.

In server workloads where predictable performance is paramount, the PC3-8500 standard offers consistent timing characteristics that support multi-user operations, virtualization workloads, and concurrent application processing. The Registered architecture enhances signal stability, enabling the module to operate reliably even when multiple DIMMs are installed across populated memory channels.

Understanding ECC Technology in HP Server Memory

ECC technology plays a central role in differentiating enterprise memory from consumer-grade DIMMs. The ECC feature embedded within the HP 500666-B21 module actively detects and corrects single-bit memory errors, which are common in high-density memory environments exposed to electrical interference, thermal fluctuations, and heavy workloads. Without ECC protection, such errors could lead to data corruption, application failures, or system crashes, potentially disrupting mission-critical operations.

ECC Registered memory is particularly valuable in financial systems, healthcare environments, scientific research, and other sectors where data accuracy directly affects outcomes and decision-making. ECC protection provides peace of mind by minimizing risks associated with silent data corruption and unplanned operational downtime.

Advantages of Quad Rank Memory in Enterprise Configurations

The quad-rank design featured in the HP 500666-B21 module enables higher memory density within servers by allowing more memory chips to be placed on each module. This can significantly increase maximum memory capacity per system, making quad-rank memory a strategic choice for virtualization hosts, database servers, and high-performance computing clusters. Although quad-rank modules may operate at slightly lower speeds under certain configurations, the trade-off is offset by the ability to scale memory to levels that dual-rank or single-rank modules cannot achieve.

Use in Virtualization

In virtualization environments, system memory serves as a critical resource allocated to each virtual machine. The HP 500666-B21's 16GB capacity and robust performance characteristics make it well-suited for consolidating multiple workloads onto fewer physical servers. This reduces hardware costs, minimizes energy consumption, and simplifies management. The reliability provided by ECC technology ensures that virtual machines operate smoothly even under high workloads, supporting advanced hypervisors and multi-tenant environments.

Memory Scalability and Infrastructure Growth

Organizations aiming to scale their IT infrastructure benefit from deploying high-capacity DDR3 Registered memory modules like the HP 500666-B21. As demands for data storage, analytics, and compute power increase, scalable memory options offer a cost-effective way to extend the operational life of existing hardware. This reduces the need for full system replacements, protecting capital investments and enabling flexible upgrade paths that align with evolving business requirements.

DDR3 Registered memory is engineered for efficient power consumption, helping reduce heat output and improve overall thermal management within server chassis. The HP 500666-B21 is optimized for stable operation in high-density rackmount environments where airflow, cooling, and thermal efficiency are crucial. Power efficiency contributes to reduced operational costs and supports environmentally conscious data center initiatives.

Reliability in Mission-Critical Workloads

Mission-critical environments demand hardware components that deliver consistent performance with minimal failure risk. The ECC Registered architecture of the HP 500666-B21 supports continuous uptime and data accuracy, making it suitable for industries where system downtime can result in financial loss or service interruption. From telecommunications to manufacturing, this memory type plays an essential role in maintaining operational continuity and supporting real-time decision-making processes.

Support for Multi-User and Multi Environments

Servers hosting multiple users or concurrently running diverse applications benefit from the stability and capacity of the HP 500666-B21. Increased memory resources help prevent slowdowns during peak usage periods and support seamless application switching. Businesses can run complex enterprise applications, support remote users, and manage simultaneous tasks without sacrificing performance or stability.

DDR3 Technology in Modern Enterprise Systems

Although newer generations of memory such as DDR4 and DDR5 have emerged, DDR3 memory like the HP 500666-B21 continues to play a vital role in maintaining existing infrastructures that operate efficiently on DDR3 platforms. Many organizations rely on proven DDR3-based systems that continue to meet performance requirements for data processing, virtualization, and enterprise applications. DDR3 Registered memory offers dependable performance, widespread compatibility, and cost-effective scalability, making it a valuable asset in extending the lifespan of established hardware ecosystems.

Data Integrity and System Uptime

Maintaining data integrity is crucial in environments where sensitive or high-value information is processed. ECC technology reduces the risk of data errors that could result in corrupted files, transaction failures, or inaccurate analytics. The HP 500666-B21 supports 24/7 operational demands, providing consistent uptime for critical applications such as financial processing, healthcare information systems, and high-availability computing clusters. Enhanced data integrity contributes to organizational trust, regulatory compliance, and long-term operational stability.

Enhanced Stability in High-Density Configurations

Servers with densely populated memory slots require modules that maintain signal integrity and stable performance. The Registered design of the HP 500666-B21 reduces electrical strain on the memory controller, ensuring consistent operation even when multiple modules are in use. This stability is essential for large-scale deployments, high-memory databases, and multi-tier application environments where resource demand is substantial.

Support for Advanced Computing Environments

Advanced computing environments such as research institutions, engineering firms, and data analytics centers rely on memory solutions that deliver predictable performance under continuous load. The HP 500666-B21 supports intensive computational tasks, simulations, and real-time analysis, enabling organizations to operate efficiently and achieve accurate results. Its architecture is well-suited for systems that prioritize precision, stability, and throughput.

Server Consolidation

The ability to run multiple workloads on fewer physical servers is a key advantage of deploying high-capacity memory modules. The HP 500666-B21 supports server consolidation efforts by enhancing memory resources and reducing the need for additional hardware. This contributes to lower power consumption, reduced data center space requirements, and simplified infrastructure management.

Scalability for Growing Data Demands

As data volumes increase, organizations require infrastructure capable of supporting expanding workloads. The HP 500666-B21 offers a scalable solution for meeting evolving data demands without overhauling existing systems. Increased memory capacity enables faster data processing, supports complex applications, and ensures that systems remain responsive as demands grow.

Enterprise-Grade Engineering and Design

Enterprise-grade memory modules like the HP 500666-B21 are engineered to deliver consistent performance in demanding environments. Built using high-quality components and tested under rigorous conditions, this memory module meets the durability, reliability, and performance requirements of enterprise computing. Its construction supports long-term operation in mission-critical systems that require unwavering performance and data accuracy.

Improved Workflow Efficiency and System Responsiveness

Memory-intensive applications benefit significantly from increased RAM capacity. The HP 500666-B21 enhances system responsiveness, reduces latency, and supports smoother multitasking. Users experience faster application load times, accelerated processing, and improved efficiency across diverse workflows, contributing to higher productivity and streamlined operations.

Importance of Memory Reliability in Data-Centric Operations

In data-centric environments where every transaction and computation matters, memory reliability becomes a foundational requirement. ECC Registered memory minimizes risks associated with data errors, enabling continuous, reliable operation in environments that depend on accurate information. This reliability supports regulatory compliance, operational consistency, and long-term data integrity.

Expanding Computing Power

Professional applications such as CAD, 3D rendering, video editing, and scientific modeling benefit from expanded memory capacity. The HP 500666-B21 provides the resources necessary for handling large files, intricate design processes, and complex rendering tasks. Increased memory supports smoother application performance, reduced rendering times, and enhanced capability for professional workflows.

Reliable Hardware Foundation for IT Infrastructure

The HP 500666-B21 serves as a foundational component within IT infrastructure, supporting core operations and enabling growth. Its dependable performance ensures that critical systems remain operational, supporting employee productivity, customer service delivery, and organizational efficiency. By building infrastructure on reliable components, businesses can establish robust systems capable of meeting current and future demands.

Memory Architecture Designed for Enterprise Performance

The DDR3 ECC Registered architecture of the HP 500666-B21 is tailored for enterprise performance. Its design reduces signal degradation, supports scalable memory configurations, and maintains consistent data throughput. This architecture enables servers to handle heavy workloads, multitasking operations, and demanding applications without compromising stability.

Operational Confidence with Genuine HP Components

Using Genuine HP memory instills confidence in system performance, compatibility, and longevity. Certified components ensure adherence to HP standards, reducing the likelihood of errors, conflicts, or failures. This confidence allows IT teams to focus on strategic initiatives rather than troubleshooting hardware issues.

Precision Engineering for Demanding Workloads

The HP 500666-B21 is engineered for precision performance in demanding workloads. Its error correction capabilities, registered architecture, and quad-rank design support consistent operation in environments requiring meticulous data handling and high computational accuracy. This precision contributes to successful outcomes in research, finance, engineering, and enterprise operations.

Enhanced Data Processing and Computational Efficiency

Systems equipped with the HP 500666-B21 experience enhanced data processing capabilities, enabling faster execution of complex tasks and improved efficiency across computational workflows. This enhancement supports better performance for analytics, simulation, machine learning preparation, and data mining operations.

Strategic Investment for IT Infrastructure Longevity

Integrating the HP 500666-B21 within enterprise systems serves as a strategic investment that supports infrastructure longevity. By expanding memory capacity and enhancing system performance, organizations can extend the usable life of existing servers, reduce capital expenditure, and maintain strong operational capabilities as requirements evolve over time.

Enhanced Multitasking and Process Management

Enterprise users often run multiple applications simultaneously, requiring memory solutions that support smooth multitasking and efficient process management. The HP 500666-B21 provides the resources necessary to maintain stable performance, minimize slowdowns, and ensure seamless workflow continuity, even under heavy application loads.

Server Memory as a Core Component of IT Performance

Memory plays a pivotal role in determining overall server performance, impacting speed, responsiveness, and workload handling capabilities. The HP 500666-B21, as part of the ECC Registered DDR3 memory category, provides the foundation for enhanced performance across various enterprise applications, supporting strong operational outcomes and resilient infrastructure performance.

Balanced Performance for Diverse Workloads

The 1066MHz speed and CL7 latency of the HP 500666-B21 offer balanced performance suitable for a wide range of workloads. This balance ensures that systems remain responsive and efficient across different tasks, from data processing to virtualization, without sacrificing stability or reliability. Its versatility makes it a valuable addition to diverse enterprise environments.

Support for Hybrid and On-Premise Environments

Many organizations utilize hybrid infrastructures that combine cloud and on-premise systems. The HP 500666-B21 supports on-premise servers that manage critical workloads, providing performance and reliability that complement cloud-based resources. This allows seamless integration of infrastructure components and ensures consistent operational quality across platforms.

Efficient Resource Utilization in Enterprise Data Centers

Efficient resource utilization is key to optimizing data center performance. By deploying high-capacity memory modules like the HP 500666-B21, data centers can improve workload distribution, reduce resource contention, and support higher-density computing environments. This contributes to improved performance, reduced power consumption, and streamlined operations across large-scale deployments.