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    DRAM MODULES

    MRDIMM memory

    Unlock the value of more cores with MRDIMM (Multiplexed Rank DIMM). Micron DDR5 MRDIMM provides high-bandwidth, low-latency main memory with large capacity and improved performance per watt. These features accelerate memory-intensive workloads in AI and high-performance computing environments. 

    Tall form DDR5 MRDIMM

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    MRDIMM (Multiplexed Rank DIMM) provides the highest-bandwidth, lowest-latency main memory, with large capacity and improved performance per watt. These features accelerate memory-intensive workloads in AI and HPC environments.

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    Unlock the value of more cores with MRDIMM

    Designed to meet the rigorous demands of modern data centers, multiplexed rank DIMMs deliver faster data rates, lower latencies and cost-effective high capacity.

    View MRDIMM product brief

    MRDIMM (Multiplexed Rank DIMM) revolution: A new era of main memory performance

    Praveen Vaidyanathan, VP & GM of the Compute Products Group at Micron, and Dimitrios Ziakas, VP & GM of Memory & IO Technology at Intel, discuss the  MRDIMM revolution in main memory performance as they unveil Micron’s MRDIMM.

    Watch MRDIMM video

    Micron MRDIMM Innovations Deliver Highest Performance and Lowest Latency Main Memory to Accelerate Data Center Workloads

    Transformative Micron MRDIMM offering powers memory-intensive HPC, AI and similar workloads.

    MRDIMM DDR5 for data centers

    35.2 milliseconds to market insight

    Micron MRDIMMs, together with Intel processors, set a new world record on the STAC-A2 benchmark for financial risk analysis. But this result isn't just an impressive speed. In this blog post we will explore how this world record is a key data point in a broader story: memory is becoming more visible as a performance lever in financial market infrastructure.  

    Read the MRDIMM blog
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    Optimal memory performance and capacity for Intel® Xeon® 6 processors

    Micron DDR5 MRDIMM provides the highest-bandwidth, lowest-latency and highest-capacity main memory for accelerating memory-intensive workloads in AI and high-performance computing environments using Intel Xeon 6 processors.

    Available from 32GB up to 256GB, our high-capacity a MRDIMMs are ready to be deployed in data centers with compatible Intel server CPUs. Micron’s high-performance MRDIMM DDR5 solution delivers up to a 39% improvement in bandwidth with energy efficiency.

    Micron and Intel MRDIMM collaboration
    Data center

    MRDIMM benefits

    Optimize

    Multiplexed Rank DIMMs optimize the overall data center total cost of ownership (TCO) by enabling higher core-count processors per server rack while maintaining critical capacity per core and bandwidth per core metrics.

    Accelerate

    Memory-intensive workloads are accelerated by boosting performance with best-in-class DIMM bandwidth. 

    Scale

    Micron MRDIMM memory helps server performance to scale by accelerating task completion time with improved task energy.

    Achieving data transfer rates of up to 8.8K MT/s

    MRDIMM's 8.8K MT/s data transfer rates

    MRDIMM DDR5 provides a 39% bandwidth upgrade for platforms looking to DDR5 RDIMM data rates1

    MRDIMM's 39% increase in bandwidth

    Micron MRDIMMs deliver up to 40% lower latency for capacity- and bandwidth-sensitive workloads2

    MRDIMM's 40% lower loaded density

    Technology Enablement Program for DDR5 MRDIMM

    The Technical Enablement Program (TEP) for DDR5 MRDIMM offers a path into Micron for early access to technical information and support, electrical and thermal models, and memory products to aid in the design, development and introduction of next-generation computing platforms.

    TEP PROGRAM DETAILS
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    Frequently asked questions

    MRDIMM (Multiplexed Rank Dual Inline Memory Module) is a type of server memory module that uses an on‑DIMM multiplexer to manage data across multiple memory ranks, enabling higher bandwidth and more efficient data transfer between memory and the processor.
     

    In practice, MRDIMMs can combine dual‑rank DDR5 memory with a multiplexer buffer and control logic to increase speeds beyond standard DDR5 specifications, while delivering higher bandwidth, lower latency, larger capacity, and improved performance per watt.

    MRDIMMs, DDR5 RDIMMs, and CXL memory each serve different roles in modern server architectures. MRDIMMs are designed to maximize main memory bandwidth, while RDIMMs prioritize stability and capacity, and CXL memory enables scalable, pooled memory expansion.

    • MRDIMM vs. DDR5 RDIMM:
      MRDIMMs increase bandwidth and data throughput using a multiplexer, making them well-suited for bandwidth‑intensive workloads.
    • MRDIMM vs. CXL memory:
      MRDIMMs provide direct-attached memory with lower latency, while CXL is primarily used to expand capacity across systems.

    HBM and MRDIMM are two different forms of advanced memory technology:

    • HBM (High Bandwidth Memory) uses 3D stacking technology to achieve high bandwidth for GPUs and AI applications.
    • MRDIMMs are an evolution of more traditional DDR5 DIMM technologies, whose development allows for higher capacity and bandwidth in servers.

    The second-generation MRDIMM design is currently under definition by JEDEC. When JEDEC releases that MRDIMM definition, Micron's products will support the JEDEC standard.
     

    Micron's first-generation MRDIMM products support Intel® Xeon® 6 processors.

    No. It is only compatible with Intel® Xeon® 6 processors. 

    Featured resources

    1. Empirical Intel Memory Latency Checker (Intel MLC) data comparing 128GB MRDIMM 8800MT/s against 128GB RDIMM 6400MT/s.

    2. Empirical Llama 3 8B data comparing 128GB MRDIMM 8800MT/s against 128GB RDIMM 6400MT/s.

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