726719-256 HPE 256GB DDR4 2133mhz Dual Rank ECC Reg Ram

The HPE 726719-256 256GB (16x16GB) PC4-17000 DDR4-2133MHz SDRAM is a high-performance memory solution designed for enterprise-grade servers and data centers. This memory module belongs to the Registered DIMM (RDIMM) category, which provides enhanced stability, scalability, and reliability for mission-critical workloads. With ECC (Error-Correcting Code) capabilities, this memory module ensures accurate data processing and helps prevent system crashes, making it an ideal choice for demanding computing environments.

Memory Type and Form Factor

This memory module is a DDR4 SDRAM type, conforming to PC4-17000 standards. The RDIMM form factor offers higher reliability compared to standard UDIMMs, thanks to its register buffer that stabilizes data signals. It operates on a 288-pin configuration, compatible with a wide range of HPE ProLiant and HPE Enterprise servers.

Memory Capacity 256GB RAM

The HPE 726719-256 kit provides a total memory capacity of 256GB, distributed across 16 individual 16GB modules. The 2Rx4 configuration indicates that each DIMM has 2 ranks of memory chips arranged in a x4 layout, optimizing data transfer and improving overall system efficiency. This setup is particularly useful for workloads requiring high memory density and fast access times.

Speed and Latency

Operating at 2133MHz, these DDR4 modules deliver fast and consistent memory bandwidth, supporting PC4-17000 data transfer rates. The CL15 latency ensures that memory requests are executed promptly, providing balanced performance across different server workloads. This combination of speed and low latency is critical for database servers, virtualization platforms, and high-performance computing (HPC) applications.

Voltage and Power Efficiency

The HPE 726719-256 memory modules operate at 1.2V, which is standard for DDR4 technology. This reduced voltage consumption compared to DDR3 modules results in lower heat generation and improved energy efficiency. Energy-efficient memory contributes to lower total cost of ownership (TCO) and supports green data center initiatives.

ECC Registered Technology

Error-Correcting Code (ECC)

One of the most important features of HPE 726719-256 memory is ECC support. ECC memory detects and corrects single-bit errors automatically, protecting your system from data corruption and ensuring operational integrity. This feature is essential for enterprise applications where data accuracy is non-negotiable, such as financial computations, scientific simulations, and cloud storage services.

Registered DIMM Benefits

The RDIMM design integrates a register between the DRAM modules and the memory controller. This register buffers control signals, reducing electrical load and allowing more memory modules to be installed in a single system without compromising stability. The HPE 726719-256 supports high-capacity server configurations, enabling memory scalability up to several terabytes in large-scale enterprise setups.

Server Compatibility

HPE 726719-256 modules are specifically optimized for HPE ProLiant Gen9 and Gen10 servers, but they may also be compatible with select HPE Enterprise systems that support DDR4-2133 RDIMM memory. Always check your server specifications to ensure maximum compatibility. These memory modules are ideal for dual-socket and multi-socket configurations where large memory pools are required.

Data Center

This memory category is designed to handle critical workloads in data centers, including virtualization, database management, high-performance computing, and enterprise resource planning (ERP) systems. ECC RDIMM modules help prevent data loss and system downtime, which is crucial for maintaining service-level agreements (SLAs) and ensuring business continuity.

Cloud Environments

Modern virtualization platforms, such as VMware vSphere, Microsoft Hyper-V, and Red Hat OpenShift, rely heavily on memory performance and reliability. The HPE 726719-256 provides sufficient capacity and speed to support multiple virtual machines (VMs) simultaneously, reducing latency and improving VM density per server. Cloud providers also benefit from RDIMM memory, as it ensures stable performance across dynamic workloads.

HPE RDIMM Memory and Comparisons

RDIMM vs LRDIMM

HPE RDIMM modules like the 726719-256 differ from Load-Reduced DIMMs (LRDIMMs) primarily in performance and capacity handling. RDIMMs offer balanced performance with lower latency and moderate density, making them ideal for most enterprise workloads. LRDIMMs provide higher memory density for extremely large servers but may exhibit slightly higher latency due to additional buffering. Choosing between RDIMM and LRDIMM depends on server configuration and workload requirements.

Single-Rank, Dual-Rank, and Quad-Rank Modules

The 2Rx4 configuration of HPE 726719-256 indicates a dual-rank x4 memory design. Dual-rank modules improve memory bandwidth utilization and are generally more cost-effective than quad-rank alternatives. Understanding rank configurations is essential when planning server upgrades to maximize channel utilization and overall system performance.

Memory Speed

HPE DDR4 RDIMMs are available in different speeds, such as 2133MHz, 2400MHz, and 2666MHz. The 2133MHz modules offer a stable and energy-efficient solution suitable for a wide range of servers. While higher-speed modules provide better raw bandwidth, the 2133MHz variant is often sufficient for database servers, virtualization, and standard enterprise workloads without incurring higher power costs.

High-Performance Computing (HPC)

Scientific simulations, financial modeling, and AI workloads demand fast and reliable memory. The dual-rank 2Rx4 configuration provides optimal memory throughput for HPC applications. ECC protection and registered architecture prevent computation errors that could compromise results in mission-critical simulations.

Future-Proofing Server

Memory scalability is crucial for adapting to growing workloads. With 16-module kits and support for multi-channel architectures, HPE 726719-256 enables enterprises to expand memory capacity gradually as requirements evolve. This future-proofing reduces the need for frequent system overhauls and ensures that server investments remain valuable over time.