AC239378 Dell PC5-38400 32GB RAM Ddr5-4800MHz 2RX8 Ecc Sdram 288-pin Rdimm Module

Comprehensive Product Overview

Generous 32GB capacity for demanding workloads, Optimized for multitasking and faster application response, Reliable performance with advanced ECC error correction. The Dell AC239378 memory module features a substantial 32GB capacity organized in a single 1x32GB configuration. This specific arrangement utilizes a 2Rx8 (2 Rank x8) organization, where the memory is structured across two independent ranks with eight memory chips per rank.

General Information

• Manufacturer: Dell
• Part Number: AC239378
• Product Type: 32GB DDR5 SDRAM Memory Module

Technical Specifications

• Module Size: 32GB single stick
• Technology: DDR5 SDRAM
• Transfer Rate: 4800MT/s (DDR5-4800 / PC5-38400)
• Error Correction: ECC enabled
• Signal Type: Registered DIMM
• Latency: CL40
• Rank Structure: Dual Rank x8 (2Rx8)

Physical Characteristics

Design & Dimensions

• Form Factor: 288-pin RDIMM
• Height: 1.00 inch
• Depth: 6.75 inches

Compatibility Matrix

Supported Dell PowerEdge Servers

Rack Server Models

• PowerEdge R660 / R660xs / R6615 / R6625
• PowerEdge R760 / R760xa / R760xd2 / R760xs
• PowerEdge R7615 / R7625 / R860 / R960

Cloud & Scale-Out Platforms

• PowerEdge C6615 / C6620
• PowerEdge HS5610 / HS5620
• PowerEdge MX760c

High-Performance Computing Systems

• PowerEdge XE8640 / XE9640 / XE9680

Edge & Rugged Deployments

• PowerEdge XR5610 / XR7620 / XR8620t

Precision Workstations

Tower Configurations

• Precision 5860 Tower / 5860XL Tower
• Precision 7960 Tower / 7960XL Tower

Dell AC239378 32GB DDR5 Server Memory Kit

Key Specifications

Capacity

This architecture enhances memory access efficiency and provides optimal performance for server workloads that require substantial memory resources. The single-module design allows for flexible server configuration while maintaining excellent memory bandwidth and access patterns.

ECC Registered Technology

This server memory module incorporates Error Correcting Code (ECC) technology with Registered buffering. The ECC functionality detects and corrects single-bit memory errors automatically, while also detecting multi-bit errors, ensuring data integrity and system stability. The Registered (buffered) design includes a register between the memory controller and DRAM chips, which reduces electrical load on the memory controller and enables support for higher memory capacities per channel. This combination makes the module particularly suitable for mission-critical applications where data accuracy and system reliability are paramount.

Performance Characteristics

Speed and Data Transfer Rates

Operating at 4800MT/s (Mega Transfers per second), the Dell AC239378 delivers exceptional data throughput capabilities. This speed specification, equivalent to PC5-38400, represents the module's peak data transfer rate of 38,400 MB/s. The DDR5 architecture implements a dual 32-bit sub-channel design that operates independently, effectively doubling the burst length compared to previous DDR4 generations. This enhanced burst architecture significantly improves memory efficiency and reduces latency for various server applications, from database management to virtualization workloads.

Timing and Latency Parameters

The module operates with CAS Latency (CL) timing of CL40, which represents the number of clock cycles between a read command and data availability. While the CL40 specification might appear higher than DDR4 equivalents, the significantly increased clock speeds of DDR5 technology result in actual absolute latency that remains competitive. The timing parameters are carefully optimized to balance performance with stability, ensuring reliable operation across extended periods of continuous server usage. Additional timing parameters include tRCD, tRP, and tRAS, all calibrated for optimal server performance.

288-Pin RDIMM Form Factor

The Dell AC239378 utilizes the standard 288-pin RDIMM (Registered Dual In-Line Memory Module) form factor specifically designed for server environments. The physical dimensions conform to industry standards, measuring approximately 133.35mm in length and 31.25mm in height. The pin configuration includes key notches that prevent incorrect installation in incompatible memory slots. The RDIMM designation specifically indicates the inclusion of address and command registers, which differentiate it from unbuffered (UDIMM) or load-reduced (LRDIMM) variants, each serving distinct purposes in server memory hierarchy.

Power Efficiency

Operating at 1.1 volts, the DDR5 technology represents a significant reduction in power consumption compared to previous DDR4 modules that typically operated at 1.2 volts. This voltage reduction, combined with improved power management integrated circuits (PMICs), enhances overall power efficiency in data center environments. The PMIC distributes power management functionality to the memory module itself, rather than relying solely on the motherboard, enabling more precise voltage regulation and improved power delivery efficiency, which is particularly beneficial in high-density server configurations.

Server Platform Compatibility

Dell Server Integration

The Dell AC239378 memory module is specifically validated and qualified for use in compatible Dell PowerEdge servers and other Dell enterprise platforms. This module undergoes rigorous testing within Dell's server ecosystem to ensure optimal performance, reliability, and compatibility. The memory is designed to work seamlessly with Dell's system management tools, including iDRAC (Integrated Dell Remote Access Controller), which provides comprehensive memory health monitoring, configuration management, and predictive failure analysis capabilities. This integration ensures that the memory operates within specified parameters and can be effectively managed in enterprise environments.

Processor and Chipset Requirements

This DDR5 RDIMM requires servers equipped with processors and chipsets that support DDR5 technology, typically including Intel Xeon Scalable Processors ( Sapphire Rapids and later generations) or comparable AMD EPYC processors with DDR5 support. The memory controller integrated within these processors must specifically support DDR5 Registered memory configurations. The module operates within the memory subsystem architecture defined by the server platform, including support for specific memory speeds, capacities, and RAS (Reliability, Availability, Serviceability) features that vary between processor generations and server models.

Advanced DDR5 Technology Features

DDR5 introduces a revolutionary dual sub-channel architecture that divides each DIMM into two independent 32-bit data sub-channels, a significant departure from DDR4's single 64-bit channel. This architectural improvement increases memory access parallelism and efficiency. Each sub-channel operates with its own command and address lines, enabling more simultaneous memory operations and reducing contention between memory requests. This enhancement particularly benefits server workloads that involve multiple concurrent processes or virtual machines, providing improved overall system responsiveness and throughput.

On-Die ECC Implementation

Beyond the standard module-level ECC protection, DDR5 memory incorporates On-Die ECC (Error Correcting Code) within the DRAM chips themselves. This additional layer of error correction addresses cell failures within individual memory chips before they can affect system-level data integrity. The on-die ECC operates transparently alongside the module-level ECC, creating a comprehensive multi-tier error correction system. This dual-layer approach significantly improves memory reliability and extends the usable lifespan of memory modules in demanding 24/7 server environments.

Signal Integrity

The Dell AC239378 implements Decision Feedback Equalization (DFE) within its memory interface, an advanced signal integrity technique previously reserved for high-speed communication systems. DFE helps compensate for channel losses and inter-symbol interference that become more pronounced at DDR5's higher data rates. This technology enables cleaner signal transmission between the memory controller and DRAM devices, allowing for higher sustainable data rates while maintaining signal integrity margins. The implementation of DFE represents a significant engineering advancement that distinguishes DDR5 from previous memory generations.

Application and Use Cases

Enterprise Server Applications

The Dell AC239378 32GB DDR5 RDIMM is particularly well-suited for virtualization platforms, where memory capacity, bandwidth, and reliability directly impact the number of virtual machines that can be supported and their performance characteristics. The module's ECC protection ensures data integrity across multiple guest operating systems, while the registered design supports the high memory densities required for extensive virtualization deployments. The bandwidth capabilities enable efficient memory sharing and ballooning techniques commonly employed in virtualized environments.

Database Management Systems

Database servers benefit significantly from the characteristics of the Dell AC239378 memory module, particularly for in-memory database applications where large datasets reside entirely in system memory. The combination of ECC protection and high bandwidth supports the demanding random access patterns of database operations, while the reliability features ensure data consistency for transactional workloads. The module's capacity and performance characteristics make it suitable for both OLTP (Online Transaction Processing) and OLAP (Online Analytical Processing) database implementations.

High-Performance Computing

In High-Performance Computing (HPC) environments, the memory bandwidth and capacity provided by the Dell AC239378 modules directly impact computational efficiency for scientific simulations, engineering analysis, and research applications. The module's ability to maintain high data transfer rates supports the memory-intensive nature of HPC workloads, while ECC protection ensures computational accuracy throughout extended calculation periods. The power efficiency characteristics also contribute to reducing overall data center power consumption in large-scale HPC deployments.

Cloud Infrastructure

For cloud service providers and large-scale infrastructure deployments, the Dell AC239378 offers the reliability, density, and performance characteristics required for multi-tenant environments. The module's compatibility with system management tools enables efficient provisioning and monitoring at scale, while the architectural advancements in DDR5 technology provide the foundation for next-generation cloud services. The balance of capacity, performance, and power efficiency makes this memory module suitable for the diverse workload requirements typical of modern cloud infrastructure.