Crucial DDR5 RDIMM 64GB 6400MT/s Server Memory

The Crucial DDR5 RDIMM 64GB 6400MT/s is a high-density, high-bandwidth registered ECC server memory module designed to meet the rigorous demands of modern data center workloads. Built on the DDR5 architecture, it operates at 6400 megatransfers per second, delivering roughly double the peak bandwidth of comparable DDR4 solutions. The module leverages on-die ECC (ODECC) inherent to DDR5 combined with traditional RDIMM registered buffering, ensuring signal integrity across high-capacity memory subsystems while maintaining the reliability and error correction required in enterprise environments. Its 64GB capacity per DIMM enables servers to reach multi-terabyte total memory configurations without exhausting available DIMM slots.

Launched in 2025 Q2, this module is purpose-built for the latest server platforms based on Intel Xeon Scalable (Granite Rapids and beyond) and AMD EPYC (Genoa, Bergamo, and Turin) processors, which natively support DDR5 at elevated speeds. The RDIMM form factor uses a registered clock driver (RCD) to buffer command and address signals, allowing platforms to populate more DIMMs per channel than unbuffered designs while sustaining stable operation at high frequencies. The 6400MT/s speed bin places this module at the forefront of DDR5 performance, making it suitable for bandwidth-sensitive server deployments where memory throughput directly constrains application performance.

Crucial engineers this module to meet JEDEC DDR5 standards and server validation requirements, qualifying it for deployment in rack-mounted servers, blade systems, and high-density compute nodes. The combination of 64GB capacity, ECC reliability, registered buffering, and 6400MT/s throughput makes it a compelling choice for organizations scaling out AI inference, in-memory databases, real-time analytics, and high-performance computing clusters where both capacity and bandwidth are mission-critical.

Ideal for

• AI and machine learning inference servers requiring large model footprints and sustained high memory bandwidth to feed GPU or CPU accelerators without bottlenecking throughput
• In-memory databases such as SAP HANA, Redis, and VoltDB where entire datasets reside in DRAM, making per-DIMM capacity and bandwidth directly proportional to query performance
• High-performance computing (HPC) clusters running computational fluid dynamics, molecular dynamics, and climate modeling workloads that are highly sensitive to memory latency and bandwidth
• Virtualization hosts running dense VM or container workloads on VMware vSphere or Red Hat OpenShift where large memory pools reduce swapping and improve consolidation ratios
• Real-time analytics platforms and data warehousing appliances processing large in-flight datasets at low latency, benefiting from DDR5-6400's elevated throughput versus previous-generation modules
• Cloud-native microservices infrastructure and Kubernetes worker nodes where large memory capacity per node supports high pod density and reduces infrastructure footprint

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.