A8475644 Dell 32GB 2133MHz PC4-17000 CL15 ECC DDR4 SDRAM Memory

Dell A8475644 32GB Memory Overview

The Dell A8475644 32GB 2133MHz PC4-17000 CL15 ECC Registered Dual Rank x4 1.2V DDR4 SDRAM 288-Pin RDIMM Genuine for PowerEdge Server Memory Module category represents a focused selection of enterprise-class server memory engineered for reliability, predictability, and compatibility with Dell PowerEdge systems. These modules are designed to meet the demanding needs of virtualization hosts, database servers, high-performance computing nodes, and mission-critical production environments where data integrity and uptime are non-negotiable. As genuine Dell RDIMM components, items in this category conform to OEM specifications, carry proven RAS (reliability, availability, serviceability) features, and are typically validated against PowerEdge BIOS revisions to ensure plug-and-play behavior. The defining characteristics include error-correcting code (ECC), registered buffering to stabilize large memory configurations, dual rank organization for efficient access patterns, x4 data organization for internal chip architecture, and the low-power 1.2V operating point that balances energy efficiency with high-speed 2133MHz operation. This category supports scale-out and scale-up memory strategies, enabling data centers to deploy balanced memory channel configurations across contemporary and legacy PowerEdge platforms that accept PC4-17000 RDIMMs.

Technical

At the heart of the Dell A8475644 32GB RDIMM lies a DDR4 SDRAM architecture optimized for server workloads. Each module is a 288-pin RDIMM conforming to JEDEC DDR4 mechanical and electrical standards. The 32GB density leverages dual rank topology, meaning memory cells are arranged into two independent ranks that the memory controller can access alternately. Dual rank modules often yield higher effective throughput in multi-channel designs compared to their single rank counterparts under certain access patterns and channel interleaving scenarios. The module’s x4 chip organization describes how each DRAM chip contributes four data bits per transfer, which influences error correction layout and spare bits arrangement for ECC functionality. ECC capability is implemented on-chip and coordinated with the registered buffer and the server’s memory controller to detect and correct single-bit errors and detect multi-bit errors, ensuring data integrity for in-flight operations and persistent working sets. The registered buffer, or register, located on the DIMM reduces the electrical load seen by the memory controller when many DIMMs are populated, enabling denser memory configurations and stable signal integrity across multiple populated channels. Operating at 2133MHz with a CAS latency of 15, these modules balance latency and throughput to support transactional workloads, large caches, and memory-heavy applications commonly hosted on PowerEdge servers. The 1.2V nominal voltage reflects the DDR4 standard’s efficiency improvements over prior generations, reducing power draw across racks of servers without sacrificing performance headroom for high-demand applications.

Compatibility

Genuine Dell modules marked A8475644 are tested and validated for compatibility with a wide range of PowerEdge server models and BIOS revisions. While the physical 288-pin RDIMM form factor and JEDEC-compliant signaling ensure mechanical fitment into DDR4 RDIMM sockets, the Dell build and SPD (serial presence detect) programming are tuned to ensure correct frequency negotiation, voltage, and timing parameters. This reduces the risk of runtime incompatibilities, system boot errors, or degraded performance that can occur when mixing unsupported third-party memory modules. Compatibility extends to specific population rules such as channel population order, population density limits per channel, and maximum supported memory per motherboard revision.

Performance

The performance profile of a 32GB 2133MHz RDIMM is influenced by CAS latency, memory channel configuration, and rank-interleaving behavior. A CL15 timing indicates the column access strobe delay in clock cycles; at 2133MHz this latency represents a trade-off between raw throughput and access responsiveness. In multi-socket and multi-channel PowerEdge designs, optimal performance is typically achieved by populating memory channels symmetrically to enable full channel interleaving and parallel access. Dual rank modules can sometimes outperform single rank modules in throughput-limited scenarios because the memory controller can alternate accesses between ranks, improving sustained bandwidth under heavy concurrent loads. For virtualization hosts with many VMs, database servers with large buffer pools, or analytics nodes performing in-memory computations, the high capacity and registered buffering of these RDIMMs provide the necessary capacity and stability to maintain predictable latency and throughput at scale.

Reliability

Enterprise workloads require robust protection against transient and permanent memory errors. The Dell A8475644 RDIMM’s ECC functionality corrects single-bit errors and detects multi-bit errors, reducing the risk of silent data corruption that can compromise application correctness or lead to system crashes. The inherent design of dual rank x4 ECC RDIMM modules contributes to these capabilities by providing redundancy and error detection infrastructure that is compatible with PowerEdge servers’ advanced fault tolerance features.

Use Cases

This category of memory is particularly well-suited to environments where high memory capacity per socket and error correction are essential. Virtualized infrastructures benefit because higher per-DIMM capacities allow more virtual machines to be hosted per server without resorting to overcommitting host memory. Database servers that rely on large in-memory buffer pools experience direct performance gains from increased memory capacity, as caching more working sets reduces disk I/O and query latencies. High-performance computing environments that rely on large memory footprints for scientific simulations, in-memory analytics, or model training also find 32GB RDIMMs to be an effective building block for large, contiguous memory allocations. These modules are also chosen by web-scale and enterprise customers for scale-out database clusters and for compute nodes that require predictable memory behavior, because the registered buffer and ECC keep large memory configurations stable under sustained load.

Thermal

The 1.2V operating voltage characteristic of DDR4 modules reduces overall energy consumption relative to prior DDR generations, but high-density RDIMMs still contribute significant thermal load in densely populated servers. Cooling strategies such as front-to-back lattice airflow designs, high-efficiency heat sinks on DIMMs, and chassis fan curves tuned by system firmware help maintain memory within manufacturer-specified thermal ranges. When populating all DIMM slots, monitor chassis temperatures and consider airflow optimizations to avoid throttling or thermal-induced errors. In blade or rack-dense environments, compute and memory power consumption should be included in capacity planning for power delivery and UPS sizing.