A8711890 Dell 64GB Memory 2400MHz PC4-19200 DDR4 SDRAM CAS-17 ECC Registered 288-Pin

Dell A8711890 64GB Memory Overview

The Dell A8711890 64GB 2400MHz PC4-19200 CL17 ECC Registered Quad Rank X4 DDR4 SDRAM 288-pin LRDIMM is engineered specifically for enterprise-grade PowerEdge server platforms that demand high memory capacity, resilience, and predictable performance under sustained server workloads. This module blends error-correcting code (ECC) capability with the stability of registered buffering and the density advantages of quad-rank organization. Designed to be installed in systems that support Load-Reduced DIMM (LRDIMM) technology, the A8711890 enables higher memory population without compromising signal integrity or forcing the memory controller into unfavorable operating conditions. As an LRDIMM, it offloads some DRAM electrical load from the memory controller, allowing servers to scale to larger total system memory while maintaining 2400MHz bandwidth and an industry-standard CAS latency of 17.

Technical Characteristics

This memory module carries a designation of PC4-19200, which corresponds to a theoretical peak transfer rate of 19.2GB/s per module at DDR4-2400 speeds. The CL17 timing identifies the CAS latency, reflecting the number of clock cycles between a read command and when data becomes available. Quad rank organization means the physical module contains four ranks of DRAM, which increases addressable capacity and can present higher interleaving advantages for multi-threaded server workloads. The x4 data width describes the internal chip architecture: each DRAM chip transmits 4 data bits in parallel. The 288-pin form factor conforms to the modern DDR4 standard for servers and high-end workstations. Registered buffering provides an intermediate register on the module that stabilizes control and address signals, while ECC functionality ensures single-bit errors are corrected and multi-bit errors can be detected, reducing the risk of data corruption in mission-critical tasks.

Load-Reduced Design

LRDIMM technology fundamentally changes how DRAM chips present electrical load to the memory bus. By using a memory buffer and additional on-module circuitry, LRDIMMs reduce the electrical burden on the system memory controller. This allows higher ranks and higher overall capacity per channel without violating signal integrity or degrading performance. As a result, the Dell A8711890 is particularly well suited to PowerEdge server models and other enterprise motherboards explicitly validated for LRDIMM operation. System compatibility extends beyond mere physical pin alignment; BIOS and firmware must support registered ECC and load-reduced topologies to harness the module's benefits. Administrators planning upgrades should verify their server's memory population rules, maximum supported DIMM capacity per slot, and any firmware releases that improve memory compatibility or performance at higher frequencies and capacities.

Performance

At DDR4-2400, this module delivers a consistently high data throughput that suits database engines, virtualization hosts, in-memory caching layers, and analytics workloads. Throughput is most visible in sustained sequential transfers and memory-bound application phases, while the CL17 latency specification provides a balance between speed and stability. For in-memory databases and large caches, the combination of 64GB per DIMM and 2400MHz speed enables large working sets to be retained with acceptable access times, supporting higher request throughput and reducing I/O dependence on slower storage tiers.

ECC

Reliability is the core of enterprise memory design. ECC detects and corrects single-bit errors that can occur during normal operation due to cosmic rays, electrical noise, or other transient effects. Registered buffering stabilizes command and address timing, which is crucial when multiple memory modules are populated across channels and ranks. The quad-rank structure improves fault isolation and offers improved memory addressing flexibility, but it also places greater electrical demands on the memory subsystem—demands that LRDIMM design addresses. Dell-branded modules like the A8711890 typically undergo vendor validation and qualification on specific PowerEdge server families, including stress testing, thermal cycling, and BIOS interoperability checks. These validation steps reduce the likelihood of incompatibility and support a predictable failure profile, which is essential for SLAs and large-scale deployments where uptime and data integrity are non-negotiable.

Use Cases

Large-scale virtualization hosts, memory-optimized database servers, analytics and machine learning training instances, in-memory caching systems, and high-density compute clusters all benefit from the combination of high capacity and reliable ECC. Virtualized environments that aim to host dozens of VMs per node can consolidate more guest memory into single chassis with fewer modules, decreasing complexity and cable count. Database systems that rely on RAM-resident indexes or buffer pools can maintain more of the working set in memory, dramatically improving query response times. High-performance computing and scientific computing nodes that require large memory footprints for complex simulations similarly benefit from the 64GB density. Even general-purpose PowerEdge servers used in mixed workloads will see operational advantages from the module's stability under mixed I/O and compute loads, especially in environments where error correction and uptime are critical.

Thermal

High-density modules like quad-rank 64GB LRDIMMs typically draw more power and generate more heat than smaller DIMMs, particularly under sustained memory activity. Server chassis airflow design and power budgeting must take this into account. System administrators should consult PowerEdge thermal profiles and ensure that inlet air temperatures, fan curves, and power supply capacity accommodate the memory configuration. Some servers have directed airflow and zoning that optimize cooling for densely populated memory banks; placing the A8711890 modules according to the manufacturer’s recommended slots and maintaining clean filters and proper airflow pathways will help preserve performance and extend module lifespan. Additionally, monitoring tools can track memory voltage and temperature where supported by the BIOS or management agents, enabling proactive responses to thermal excursions or power anomalies.

Compatibility

Dell PowerEdge servers span multiple generations, each with specific memory controller capabilities and supported DIMM types. The A8711890 is intended for systems that explicitly support DDR4 LRDIMM modules and PC4-19200 speeds. Compatibility is not only about physical fit; memory controller topology, chipset generation, and BIOS microcode determine whether high-density quad-rank LRDIMMs will operate at their intended speed or may be negotiated down to a lower frequency for stability. For administrators, the recommended practice is to consult both the server’s technical specifications and Dell’s validated memory support matrices. When paired with compatible PowerEdge chassis, the A8711890 enables larger total system memory capacities while retaining the benefits of ECC and registered buffering. In mixed environment landscapes, maintaining a single DIMM type across homogeneous clusters simplifies inventory and reduces the risk of incompatibility-driven incidents.