Micron 64GB DDR5-6400 RDIMM MTC40F2046S1RC64BD2

Brand: Micron | Category: Memory (RAM)

SKU: MIC-MTC40F2046S1RC64 | Part #: MTC40F2046S1RC64 | MPN: MTC40F2046S1RC64

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Built for Intel Xeon Scalable processors (3rd Gen and newer) and AMD EPYC platforms, the Micron 64GB DDR5-6400 RDIMM occupies a critical role in high-bandwidth memory channels where data throughput directly impacts workload performance. This module, referenced as MTC40F2046S1RC64BD2, delivers the speed and capacity required by data centre operators managing demanding compute tasks across AI inference, HPC simulation, and transactional database workloads. Micron engineered this part for reliability in always-on environments, which is why the 64GB capacity at 6400 MT/s has become the standard choice for organisations upgrading legacy DDR4 infrastructure or scaling new deployments across multiple processor sockets.

The MTC40F2046S1RC64 is a registered DIMM (RDIMM) operating at 1.1V, which positions it as a platform-optimised memory solution rather than a consumer or workstation part. In practical terms, this means the module includes a register stage between the DRAM array and the processor's memory controller, reducing electrical load on the CPU and enabling higher module counts per channel without signal integrity degradation. For a systems integrator or data centre infrastructure manager, this architectural choice translates to the ability to populate 12 or more DIMMs per socket on modern systems without throttling performance—a capability that consumer DDR5 modules simply cannot guarantee. Micron's implementation of 2Rx4 rank configuration (two ranks, four-bank organisation) balances density with electrical characteristics, allowing administrators to build larger memory footprints while maintaining headroom for oversubscription and hot-swap operations.

Speed is often conflated with performance, but the 6400 MT/s rating on this Micron module reflects a deliberate engineering compromise between latency and throughput. The CAS latency (CL52) sits within the typical range for DDR5-6400 parts; it is not the fastest possible latency at this frequency, but it is not the slowest either. What matters in production is that Micron has calibrated both parameters to work within the voltage envelope of 1.1V, which keeps power draw per module predictable and thermal output manageable in density-optimised rack configurations. A storage architect evaluating memory for a multi-node NVMe SAN or a network engineer provisioning DRAM for packet-processing appliances will find that this balance means predictable behaviour across diverse workload profiles without the need for exotic cooling or power distribution upgrades.

ECC (Error Correction Code) is mandatory for this product, not optional. Every read and write operation on the MTC40F2046S1RC64BD2 is protected against single-bit errors, with detection capability for multi-bit faults. In data centre and AI infrastructure environments, memory errors are not rare; they accumulate over months of operation and manifest as silent data corruption, crashed jobs, or corrupted model weights. The presence of ECC on a 64GB module means that a single failure event is caught, logged, and either corrected or flagged for administrative action before cascading through applications. This is non-negotiable for any organisation running persistent workloads, and it is why IT procurement teams and infrastructure engineers insist on ECC-capable RDIMMs when budgeting for memory upgrades.

Omnixon Global supplies the Micron 64GB DDR5-6400 RDIMM (part number MTC40F2046S1RC64) across the GCC, South Asia, and European regions, serving data centres, AI research labs, and enterprise IT departments that require memory solutions validated for mission-critical platforms. Whether you are provisioning a new Xeon or EPYC cluster, expanding existing infrastructure, or qualifying components for a custom appliance build, we hold stock and can support bulk procurement, technical validation, and expedited delivery. Contact our team to request a quotation and discuss your specific memory architecture requirements.

Performance Specifications

• Capacity: 64GB per module, enabling multi-socket systems to reach 2TB or greater total memory with standard channel populations
• Speed: 6400 MT/s (megatransfers per second) DDR5 frequency, aligned with Intel Xeon Scalable 3rd Gen and AMD EPYC 7004 series specifications
• Latency: CAS latency CL52, tuned for the 1.1V operating point to ensure stability across temperature and voltage variance
• Voltage: 1.1V nominal, reducing power consumption relative to legacy DDR4 and early DDR5 modules
• ECC Protection: Single Error Correction, Double Error Detection (SECDED) on all data and address paths
• Rank Configuration: 2Rx4 (dual-rank, four-bank), optimising electrical load distribution across the memory controller
• Form Factor: RDIMM (Registered DIMM), required for server-class systems and mandatory in high-density deployments