AB128249 Dell 32GB DDR4 SDRAM 2666MHz 288-Pin Rdimm Memory Module

Dell AB128249 32GB PC4-21300 Memory

The Dell AB128249 32GB DDR4 SDRAM module is engineered for enterprise-grade servers and workstations, delivering reliable performance with advanced error correction and registered signal processing. Designed with dual-rank architecture and optimized latency, this RDIMM ensures stability and speed for demanding workloads.

General Specifications

• Brand Name: Dell
• Part Number: AB128249
• Product Type: 32GB DDR4 SDRAM Memory Module

Technical Details

• Capacity: 32GB single module
• Technology: DDR4 SDRAM
• Speed: 2666MHz (PC4-21300)
• Latency: CL19
• Integrity: ECC error correction
• Processing: Registered signal handling
• Rank: 2Rx4 dual-rank structure

Physical Attributes

• 288-pin RDIMM design
• Voltage requirement: 1.2V
• Optimized for server-grade environments

Compatibility

• PowerEdge R640, R740, R940, R740xd
• PowerEdge R440, R540, T440, T640
• PowerEdge C6420, C4140
• PowerEdge FC640, M640, M640 VRTX
• Precision Workstation T7820, T7820 XL
• Precision Workstation R7920, R7920 XL
• Precision Workstation T7920, T7920 XL
• Precision Workstation T5820, T5820 XL

Dell AB128249 DDR4 RDIMM Memory Overview

The Dell AB128249 32GB DDR4 RDIMM server memory module belongs to a specialized enterprise-grade memory category designed to support mission-critical server environments where stability, data integrity, predictable performance, and long-term compatibility are mandatory. This category focuses on ECC Registered DDR4 memory modules engineered specifically for Dell PowerEdge and compatible enterprise servers that demand consistent throughput under sustained workloads. The 32GB capacity configuration within this category addresses the growing need for higher memory density per slot, enabling organizations to maximize server resources without increasing physical server footprints or power consumption. This memory category emphasizes reliability over consumer-grade performance metrics, prioritizing features such as error correction, signal buffering, and compliance with strict JEDEC standards. Dell-certified memory modules like the AB128249 are validated at the firmware, BIOS, and hardware levels to ensure seamless integration with Dell server platforms. This ensures not only compatibility but also predictable behavior across firmware updates, operating system changes, and virtualization layers.

DDR4 ECC

The category of DDR4 ECC Registered DIMMs represents a significant evolution from unbuffered and non-ECC memory technologies. ECC Registered memory incorporates a register between the DRAM modules and the memory controller, reducing electrical load and allowing for greater memory scalability within server systems. This architectural design enables servers to support higher total memory capacities across multiple DIMM slots while maintaining signal integrity and timing accuracy. Error Correcting Code functionality is central to this category, as it continuously monitors and corrects single-bit memory errors while detecting multi-bit errors. In enterprise environments where data corruption can lead to system crashes, security vulnerabilities, or financial losses, ECC memory plays a crucial role in maintaining operational continuity. The Dell AB128249 module operates within this ECC Registered framework, aligning with the broader category’s emphasis on data accuracy and system resilience.

Dual Rank X4

Within this category, the dual rank x4 organization represents an optimal balance between performance, reliability, and compatibility. Dual rank modules effectively present two logical memory banks to the memory controller, improving data interleaving and access efficiency. The x4 DRAM chip configuration further enhances fault tolerance by allowing more granular error detection and correction compared to x8 configurations. This organizational structure is particularly valuable in enterprise virtualization environments where memory access patterns are highly parallel and unpredictable.

2666MHz Performance

The 2666MHz operating frequency places this memory category within a widely adopted performance class that balances speed with thermal efficiency and platform compatibility. PC4-21300 bandwidth allows for substantial data transfer rates, supporting modern multi-core processors that rely heavily on memory throughput for optimal performance. This speed tier is especially relevant for enterprise servers that require stable performance under continuous operation rather than short bursts of peak speed. Memory modules in this category are designed to maintain their rated frequency under sustained load conditions, which is critical in data center environments where thermal consistency and power efficiency are tightly managed. Dell-certified DDR4 RDIMMs undergo extensive stress testing to ensure that the 2666MHz frequency remains stable across a wide range of operating conditions.

CAS Latency

The CL19 latency specification reflects a timing profile optimized for reliability and compatibility rather than aggressive low-latency tuning. In server environments, predictable memory timing is often more valuable than marginal latency reductions. This category prioritizes consistent response times that align with server memory controller expectations, reducing the risk of timing-related instability. CL19 latency also complements ECC and registered buffering by ensuring that error correction and signal management processes are completed without introducing unpredictable delays. As a result, memory modules within this category deliver dependable performance for enterprise workloads that demand continuous uptime.

1.2V Low-Power

The 1.2V operating voltage defines this category’s commitment to power efficiency and thermal management. Compared to previous DDR generations, DDR4 memory significantly reduces power consumption, which translates into lower heat output and improved energy efficiency across server deployments. In large-scale data centers, even small reductions in per-module power usage can lead to substantial operational cost savings. This low-voltage design also supports higher memory densities per server without exceeding thermal design limits. Dell AB128249 memory modules are engineered to operate efficiently at 1.2V while maintaining signal integrity and performance consistency, making them suitable for densely populated server configurations.

288-Pin RDIMM

The 288-pin RDIMM form factor defines the physical and electrical interface for this memory category. This standardized design ensures compatibility with a wide range of enterprise server motherboards that support DDR4 registered memory. The pin configuration supports high-speed data transfer, power delivery, and signal integrity required for enterprise workloads.

Compatibility

This memory category is specifically aligned with Dell server platforms, including PowerEdge systems that require certified memory modules for optimal operation. Dell conducts rigorous validation processes that include compatibility testing with specific server models, BIOS versions, and firmware configurations. This ensures that memory modules like the AB128249 integrate seamlessly into Dell server ecosystems.

Enterprise

The DDR4 RDIMM server memory category addresses a wide range of enterprise workloads that require high memory capacity, reliability, and consistent performance. These workloads include virtualization platforms where multiple virtual machines share memory resources, database systems that rely on fast and reliable memory access, and enterprise applications that process large datasets in real time. Memory modules like the Dell AB128249 support these workloads by providing predictable performance characteristics and robust error correction capabilities.

Scalability

The 32GB capacity within this category supports scalable server configurations that can grow alongside organizational needs. By enabling higher memory density per slot, these modules allow administrators to expand system memory without requiring additional servers or major infrastructure changes. DDR4 RDIMM technology remains widely supported across multiple server generations, making this category a practical choice for long-term deployments. Organizations can invest in memory upgrades with confidence that their systems will remain compatible with future software and workload requirements.