Micron 64GB DDR5-6400 ECC RDIMM Server Memory MTC40F2046S1RC64BD2

Brand: Micron | Category: Memory (RAM)

SKU: MTC40F2046S1RC64BD2 | Part #: MTC40F2046S1RC64BD2

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Product Overview

The Micron 64GB DDR5-6400 ECC RDIMM represents the cutting edge of server memory technology, engineered to meet the most demanding enterprise workloads of today and tomorrow. As a Registered Dual Inline Memory Module (RDIMM) operating at DDR5-6400 speed grade, this module delivers unprecedented memory bandwidth and density in a single DIMM slot, enabling data centres, cloud providers, and high-performance computing environments to dramatically accelerate throughput-sensitive applications.

Built on Micron's advanced DRAM fabrication technology, this module incorporates on-die ECC (Error Correcting Code) as a baseline DDR5 feature, combined with RDIMM-level ECC for a dual-layer error correction architecture. This makes it an ideal choice for mission-critical deployments where data integrity is non-negotiable. Whether powering large language model inference, real-time OLAP analytics, or dense virtualisation hosts, this module ensures consistent, reliable, and high-speed memory access at scale.

Omnixon Global stocks this module brand new, sealed, and sourced through authorised channels, ensuring enterprise buyers across the GCC and beyond receive genuine Micron product with full specification compliance and traceability.

Key Features & Benefits

• DDR5-6400 Speed Grade: Operates at 6400 MT/s, delivering up to 51.2 GB/s of peak theoretical bandwidth per module — a substantial leap over DDR4 and DDR5-4800 predecessors, reducing memory bottlenecks in bandwidth-hungry workloads.
• 64GB High-Density Capacity: A single 64GB RDIMM allows servers with 12 or 24 DIMM slots to achieve 768GB or 1.5TB of total system memory respectively, maximising in-memory dataset capacity for databases and AI models without sacrificing slot availability.
• Registered (RDIMM) Architecture: The onboard register buffers command and address signals between the CPU and DRAM chips, improving signal integrity across all DIMM slots and enabling large memory configurations that unbuffered DIMMs cannot support at this speed grade.
• ECC with On-Die ECC (ODECC): DDR5 mandates on-die ECC natively within each DRAM chip, while the RDIMM's system-level ECC provides an additional layer of single-bit error correction and multi-bit error detection, dramatically reducing uncorrectable error rates in production environments.
• On-Module Power Management (PMIC): DDR5 introduces an integrated Power Management IC directly on the DIMM, shifting voltage regulation from the motherboard to the module itself. This delivers tighter voltage control, improved power efficiency, and reduced electromagnetic interference compared to DDR4 architectures.
• Industry-Standard JEDEC Compliance: Fully compliant with JEDEC DDR5 specifications, ensuring broad compatibility with AMD EPYC Genoa/Bergamo and Intel Xeon Scalable (Sapphire Rapids/Emerald Rapids) server platforms that natively support DDR5-6400 operation.
• Micron Manufacturing Quality: Produced in Micron's own fabrication facilities, this module benefits from end-to-end quality control, consistent binning at the 6400 MT/s speed grade, and rigorous testing to enterprise-grade reliability standards.
• Optimised for AI & HPC Workloads: High bandwidth and large capacity make this module particularly well-suited for AI inference serving, scientific simulation, financial modelling, and any workload where data must reside in-memory to avoid storage I/O latency penalties.

Technical Architecture

The MTC40F2046S1RC64BD2 is built on Micron's latest-generation DDR5 DRAM die technology, leveraging a 1Rx4 or multi-rank configuration (as appropriate for the 64GB density at this speed grade) to deliver the rated 6400 MT/s data transfer rate. The RDIMM format incorporates a register component (RCD) that sits between the memory controller and the DRAM arrays, re-driving command and address signals to ensure clean signal integrity even in fully-loaded memory channel configurations with multiple DIMMs per channel.

DDR5 architecture fundamentally differs from DDR4 by splitting each 64-bit channel into two independent 32-bit sub-channels, each with its own chip select and command/address bus. This sub-channel architecture improves memory access granularity, reduces row buffer conflicts, and allows the memory controller to service two independent memory requests concurrently on the same physical DIMM, contributing to the significantly higher effective bandwidth observed in real-world benchmarks.

The integrated PMIC (Power Management Integrated Circuit) on this DDR5 RDIMM regulates the module's supply voltages locally, operating from a 12V input rail and generating the precise VDD, VDDQ, and VPP voltages required by the DRAM arrays and register components. This architecture reduces motherboard design complexity, improves transient response during burst memory access patterns, and contributes to an overall lower system-level power envelope compared to equivalent DDR4 configurations at the same capacity point.

On-die ECC within each DDR5 DRAM chip corrects single-bit errors internal to the die before data is presented on the I/O bus, meaning the system-level ECC operates on already-corrected data — effectively providing a double layer of protection that significantly lowers the raw bit error rate reaching the CPU's memory controller.

Performance & Capacity

Operating at DDR5-6400 with a standard CAS latency profile, this module delivers peak theoretical bandwidth of approximately 51.2 GB/s per module (6400 MT/s × 8 bytes per transfer). In a dual-channel configuration across a single CPU socket, this translates to over 100 GB/s of memory bandwidth available to the processor — critical for feeding data to GPU accelerators, high-core-count CPUs, and SmartNIC offload engines in modern AI inference infrastructure.

The 64GB capacity per DIMM allows a 2-socket server platform with 24 DIMM slots (12 per socket) to reach 1.5TB of total system memory using only this single module density. For in-memory database engines such as SAP HANA, Oracle TimesTen, or Redis running large working sets, this eliminates the need for slower NVMe swap tiers and keeps all active data accessible at full DRAM speeds. AI training jobs processing large model checkpoints, embedding tables, or feature stores benefit directly from both the capacity density and the raw bandwidth this module provides.

Latency at DDR5-6400 is competitive with predecessor generations despite the higher clock frequency, with typical CAS latency values in the CL46-CL52 range depending on the JEDEC speed bin sub-profile. While absolute latency in nanoseconds may be marginally higher than DDR4-3200 at its native speed, the bandwidth-per-nanosecond ratio strongly favours DDR5-6400 for throughput-bound workloads.

Compatibility & Integration

This Micron DDR5-6400 RDIMM is designed for server platforms with memory controllers natively supporting DDR5-6400, including:

• Intel Xeon Scalable (4th Gen – Sapphire Rapids): Supports DDR5 up to 4800 MT/s natively; DDR5-6400 may operate at validated speeds subject to platform QVL confirmation.
• Intel Xeon Scalable (5th Gen – Emerald Rapids): Enhanced DDR5 support with improved frequency headroom, making DDR5-6400 RDIMMs a natural fit.
• AMD EPYC 9004 Series (Genoa/Genoa-X): Native DDR5 support across 12 channels per socket, enabling extremely high aggregate bandwidth when combined with DDR5-6400 modules.
• AMD EPYC 9754/9654 and related SKUs: High channel count and DDR5 native support align well with this module's performance profile.
• JEDEC DDR5 Standard Compliance: Ensures interoperability across all DDR5-compliant server platforms from major OEMs including Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, Supermicro, and Inspur server families with DDR5-capable chipsets.
• Linux & Windows Server OS Support: Fully transparent to the operating system layer; compatible with Red Hat Enterprise Linux, Ubuntu Server, SUSE Linux Enterprise, Windows Server 2019/2022, and VMware ESXi 8.x running on supported hardware.

Buyers should always verify their specific server model's Qualified Vendor List (QVL) or Hardware Compatibility List (HCL) to confirm validated operation at the DDR5-6400 speed grade, particularly in multi-DIMM-per-channel configurations where signal integrity constraints may apply.

Ideal Use Cases

• AI & Machine Learning Inference Servers: Large language models (LLMs) and transformer-based inference engines require massive in-memory bandwidth to load model weights and serve token generation at low latency. DDR5-6400 at 64GB density enables the high-capacity, high-bandwidth memory subsystem these workloads demand.
• High-Performance Computing (HPC) Clusters: Scientific simulation, computational fluid dynamics, genomics processing, and climate modelling jobs frequently bottleneck on memory bandwidth. This module's 6400 MT/s speed grade directly accelerates these memory-bound computation patterns.
• High-Density VMware / KVM Virtualisation Hosts: Data centres running hundreds of virtual machines per host benefit from 64GB RDIMM density to maximise vRAM allocation per socket without exhausting DIMM slots, while ECC ensures VM memory integrity across long uptime cycles.
• In-Memory Databases & Real-Time Analytics (OLAP): Platforms such as SAP HANA, MemSQL (SingleStore), and Apache Ignite keep entire datasets in DRAM for sub-millisecond query response. The combination of 64GB capacity and DDR5-6400 bandwidth directly improves query throughput and reduces scan times.
• Cloud Service Provider Infrastructure: CSPs building out next-generation compute nodes benefit from DDR5-6400 RDIMMs to differentiate premium instance tiers, offering tenants higher memory bandwidth for memory-optimised virtual machine families.
• Financial Services & Algorithmic Trading Infrastructure: Low-latency risk calculation engines, real-time market data processing, and Monte Carlo simulation platforms require high-bandwidth, high-integrity memory. The dual-layer ECC architecture of this RDIMM is particularly valuable in regulated environments where data corruption carries significant compliance risk.
• Containerised Workloads & Kubernetes Clusters: Container orchestration platforms running microservices, CI/CD pipelines, or data processing frameworks such as Apache Spark benefit from large memory pools to increase pod density and reduce out-of-memory eviction events.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, serving enterprise clients across the GCC region including Saudi Arabia, UAE, Qatar, Kuwait, Bahrain, Oman, and internationally. We maintain in-region stock of key server memory modules including high-density DDR5 RDIMMs, enabling rapid fulfilment for data centre expansion projects, urgent server upgrades, and procurement under tight project timelines. Our procurement team works directly with enterprise IT buyers, system integrators, and managed service providers to source genuine, factory-sealed hardware with full part number traceability. Every product sold through Omnixon undergoes condition verification and authenticity checks before dispatch. Our technical pre-sales team can assist with memory configuration planning, compatibility validation against your specific server platform, and multi-module bulk procurement requirements. As a regionally established distributor, Omnixon understands the compliance and documentation requirements of enterprise procurement in the GCC, including LC payment terms, customs documentation, and local tax invoicing. Contact our enterprise sales team to discuss your memory infrastructure requirements.

Related Products & Ecosystem

To build a complete, high-performance server memory infrastructure, consider pairing this Micron DDR5-6400 RDIMM with complementary hardware categories available from Omnixon:

• Enterprise Servers: Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro server platforms with DDR5-capable Intel Xeon or AMD EPYC processors form the natural host platform for this module.
• CPUs: Intel Xeon Scalable (Sapphire Rapids / Emerald Rapids) and AMD EPYC 9004-series processors are the primary compute partners that unlock DDR5-6400 memory channel bandwidth.
• Enterprise SSDs (NVMe): For tiered memory and storage architectures, NVMe SSDs complement large DRAM pools by providing high-speed persistent storage for checkpoint data, model weights, and database overflow.
• GPUs & AI Accelerators: NVIDIA H100, A100, and H200 GPUs installed in the same server chassis depend on a high-bandwidth CPU memory subsystem to avoid becoming CPU-memory-bound during data preprocessing and model loading phases.
• Network Adapters & NICs: High-speed 100GbE and 400GbE NICs ensure that memory-bandwidth-rich servers can receive and transmit data at rates commensurate with their internal memory throughput, avoiding network I/O becoming the system bottleneck.
• UPS & Power Protection: Protecting high-density DDR5 server deployments with appropriate UPS solutions ensures that in-memory datasets and active transactions are safeguarded against unexpected power events.