KSM48R40BD4-64MD Kingston 64GB CL40 DIMM 2Rx4 DDR5-4800 Memory Module

The Kingston KSM48R40BD4-64MD is a high-performance 64GB DDR5-4800 ECC Registered DIMM memory module designed to meet the demanding needs of enterprise servers and data centers. Built for reliability and efficiency, this module features 2Rx4 dual-rank architecture and a low-latency CL40 timing, ensuring seamless operation and improved computational performance.

Benefits of Kingston DDR5 ECC Memory 

Enhanced Performance with DDR5 Technology

DDR5 memory technology significantly improves upon its predecessor, DDR4, by providing higher bandwidth, lower power consumption, and increased efficiency. The Kingston KSM48R40BD4-64MD module delivers exceptional speed and multitasking capabilities for advanced computing environments.

Reliability with ECC (Error-Correcting Code) Support

The built-in ECC functionality ensures error detection and correction, preventing data corruption in mission-critical applications such as financial modeling, cloud computing, and data analytics.

Improved Server Efficiency and Scalability

With 64GB capacity per module, this memory allows for high-density memory configurations, reducing the number of modules required and improving overall server efficiency.

Technical Specifications

Memory Architecture

The Kingston KSM48R40BD4-64MD uses a 2Rx4 dual-rank x4 architecture, optimizing data access speeds while maintaining power efficiency.

Voltage and Power Efficiency

Operating at 1.1V, this module ensures reduced power consumption, contributing to energy savings and reduced heat generation in enterprise data centers.

DDR5 Technology Advancements in Server Memory

DDR5 memory introduces substantial architectural improvements that define this category. With a base data rate of 4800 MT/s, DDR5-4800 modules like the KSM48R40BD4-64MD significantly increase memory bandwidth compared to prior generations. This higher throughput supports multi-core processors that rely on rapid access to large datasets, reducing bottlenecks in compute-heavy workloads such as virtualization hosts, in-memory databases, and enterprise resource planning systems.

Another defining advancement of DDR5 server memory is the integration of on-die error correction mechanisms alongside traditional ECC at the module level. While ECC Registered DIMMs already provide robust error detection and correction, DDR5 adds internal reliability enhancements that improve data integrity before information even reaches the memory controller. This layered approach to error mitigation is especially valuable in always-on data center environments where uptime and data accuracy are critical.

Compatibility and Use Cases

Enterprise-Grade Reliability

Designed for high-demand computing environments, this module is ideal for use in enterprise-grade servers, cloud infrastructure, and virtualization platforms.

Higher Bandwidth and Improved Channel Efficiency

DDR5 DIMMs are designed with dual independent 32-bit subchannels per module, replacing the single 64-bit channel structure used in DDR4. This architectural change allows for improved channel efficiency and reduced latency in concurrent access scenarios. In the context of server workloads, this translates to smoother multitasking, faster response times under load, and improved scalability as core counts increase.

The DDR5-4800 speed grade provides a balanced combination of performance and stability for enterprise deployments. It ensures compatibility with a wide range of server CPUs while delivering enough bandwidth to support demanding applications without excessive power draw or thermal output.

DDR5 vs DDR4 Advantages of Upgrading

Higher Bandwidth for Faster Data Processing

DDR5 provides increased memory bandwidth, making it a superior choice for data-intensive applications compared to DDR4.

Lower Power Consumption

With a reduced operating voltage of 1.1V compared to DDR4's 1.2V, DDR5 memory modules like the Kingston KSM48R40BD4-64MD improve energy efficiency.

Enhanced Data Integrity

Integrated on-die ECC and error correction mechanisms in DDR5 ensure better data accuracy and reliability.

Industry-Leading Quality and Testing

Kingston rigorously tests its memory modules for stability, compatibility, and durability, ensuring long-term reliability in enterprise environments.

Trusted by Businesses Worldwide

Kingston is a recognized leader in memory solutions, trusted by enterprises, cloud service providers, and data centers globally.

Registered DIMM Architecture

A key characteristic of this category is the use of Registered DIMM (RDIMM) architecture. Registered memory incorporates a register, or buffer, between the DRAM chips and the memory controller. This buffer reduces electrical load on the controller, enabling support for higher memory capacities and more DIMMs per channel. As a result, RDIMMs are the preferred choice for enterprise servers and workstations that require large memory footprints and consistent performance.

The 2Rx4 configuration of the KSM48R40BD4-64MD indicates a dual-rank module using x4 DRAM chips. Dual-rank memory can improve performance by allowing interleaving between ranks, while x4 chip organization enhances error correction capabilities compared to x8 configurations. This combination is commonly used in data center environments where reliability and efficiency are paramount.

Scalability and Future-Proofing

DDR5 server memory modules support higher maximum capacities per DIMM compared to DDR4, allowing system architects to design scalable platforms that can grow with organizational needs. The use of 64GB modules enables incremental upgrades without replacing existing memory, extending the usable lifespan of server hardware.

As software continues to demand more memory for caching, analytics, and real-time processing, this category of high-capacity DDR5 RDIMMs provides a foundation for future expansion while maintaining compatibility with current enterprise platforms.