Micron 64GB DDR5-5600 ECC RDIMM Server Memory MTC40F2046S1RC56BD2

Brand: Micron | Category: Memory (RAM)

SKU: MTC40F2046S1RC56BD2 | Part #: MTC40F2046S1RC56BD2

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Product Overview

The Micron 64GB DDR5-5600 ECC RDIMM represents a significant leap forward in enterprise server memory technology. As one of the world's leading DRAM manufacturers, Micron designs and fabricates this module entirely within its own facilities, ensuring rigorous quality control, consistent silicon performance, and validated reliability across thousands of production server hours. DDR5 is the fifth generation of Double Data Rate synchronous DRAM, bringing with it a fundamentally redesigned architecture that doubles the theoretical peak bandwidth of DDR4 while simultaneously improving power efficiency and introducing on-die ECC as a standard feature. For enterprise IT directors, data centre architects, and cloud infrastructure engineers, this 64GB RDIMM is a purpose-built solution engineered to meet the memory demands of today's most compute-intensive workloads — from large language model inference and AI/ML training pipelines to in-memory databases and virtualised enterprise environments.

Registered DIMMs (RDIMMs) use a register component placed between the memory controller and the DRAM chips, buffering the command and address signals. This register reduces electrical loading on the memory bus, enabling higher module counts per channel and greater overall memory capacity per server. For mission-critical enterprise platforms, RDIMMs are the standard choice because they offer the ideal balance of performance, stability, and scalability without the premium cost of LRDIMMs for moderate-density configurations. The MTC40F2046S1RC56BD2 operates at DDR5-5600 speed — one of the highest standard DDR5 frequencies available — providing exceptional throughput for bandwidth-sensitive applications.

Key Features & Benefits

• 64GB High-Density Capacity: Delivers twice the per-DIMM capacity of typical 32GB DDR4 RDIMMs, enabling significantly higher memory footprints per server without increasing DIMM slot count, reducing system complexity and power draw.
• DDR5-5600 Speed Grade: Operating at 5600 MT/s, this module provides up to 44.8 GB/s of theoretical peak bandwidth per module, representing a substantial improvement over DDR4-3200's maximum of 25.6 GB/s, directly accelerating memory-bound workloads.
• ECC (Error-Correcting Code) Support: Hardware-level single-bit error correction and multi-bit error detection protect live data in production environments, reducing the risk of data corruption and unexpected system downtime — critical for financial, healthcare, and government deployments.
• On-Die ECC (ODECC): DDR5 introduces ODECC natively at the DRAM die level, providing an additional layer of protection before data even reaches the system-level ECC logic, improving overall system reliability and reducing soft error rates (SER) in dense server environments.
• Registered (Buffered) Architecture: The integrated register buffer stabilises address and command signals, enabling stable operation in multi-DIMM-per-channel configurations and supporting servers with large DRAM populations without compromising signal integrity.
• Improved Power Efficiency: DDR5 operates at 1.1V VDD compared to DDR4's 1.2V, and the new Power Management IC (PMIC) integrated onto each DIMM allows finer voltage regulation and improved power delivery, reducing thermal output per GB of memory deployed.
• Micron-Native Silicon: Unlike many third-party memory vendors who source DRAM chips on the open market, Micron fabricates its own DRAM using advanced process technology. This vertical integration ensures consistent bin quality, validated compatibility, and long product lifecycle availability for enterprise procurement teams.
• Extended Thermal & Reliability Validation: Each module undergoes extensive burn-in testing, thermal cycling, and parametric screening at Micron's manufacturing facilities to meet enterprise-grade reliability standards expected by major server OEMs.

Technical Architecture

DDR5 introduces a fundamentally redesigned internal architecture compared to DDR4. Each DDR5 DIMM features two independent 32-bit sub-channels (rather than a single 64-bit channel in DDR4), effectively creating two independent 40-bit channels (including ECC bits) per DIMM. This sub-channel architecture improves command bus efficiency, reduces access latency for smaller data requests, and increases the overall bandwidth available to the memory controller. The MTC40F2046S1RC56BD2 is built on Micron's advanced DRAM process node, utilising high-density 16Gb or 24Gb DDR5 die stacking to achieve 64GB capacity within a standard 288-pin DIMM form factor.

The integrated Power Management IC (PMIC) is a defining architectural change in DDR5. In DDR4, voltage regulation for memory was handled by the motherboard's VRM circuitry. In DDR5, each DIMM carries its own PMIC, which accepts a higher input voltage from the motherboard and steps it down precisely to the sub-volt levels required by the DRAM array and interface logic. This localised power management reduces noise on the power delivery network, improves voltage stability across varying load conditions, and allows the memory controller to communicate more precisely with individual modules — all contributing to higher operating frequencies and improved reliability at speed grades like DDR5-5600.

The register buffer in an RDIMM isolates the memory controller's address and command outputs from the DRAM chips directly, driving those signals locally. This allows the memory controller to operate as if it were driving a single load, regardless of how many DRAM chips are physically on the module. Combined with DDR5's improved signal integrity at high frequencies, this enables stable DDR5-5600 operation even in fully-populated server memory configurations.

Performance & Capacity

At DDR5-5600 speeds with a 64-bit (per sub-channel) data bus, each sub-channel of the MTC40F2046S1RC56BD2 delivers a theoretical peak bandwidth of approximately 22.4 GB/s, and the full DIMM delivers approximately 44.8 GB/s of aggregate bandwidth to the memory controller. In practice, real-world server memory bandwidth depends on the number of installed DIMMs, the memory controller configuration of the host CPU, and the memory access patterns of the running workload. Platforms such as Intel Xeon Scalable (Sapphire Rapids and later) and AMD EPYC (Genoa and later) are designed to maximise throughput from DDR5-5600 RDIMMs when channels are fully populated.

For a typical two-socket server with 16 DIMM slots (8 per CPU, one DIMM per channel), 16 units of this 64GB RDIMM would provide 1TB of total system memory with all 8 memory channels per socket populated at DDR5-5600. This configuration is well-suited to large in-memory databases, virtualisation hosts running hundreds of VMs, and AI inference servers requiring large KV-cache memory pools. Latency at DDR5-5600 with typical CAS latency timings (CL46) remains competitive with DDR4-3200 in absolute nanoseconds while delivering substantially greater throughput.

Compatibility & Integration

The Micron MTC40F2046S1RC56BD2 is designed to comply with JEDEC DDR5 SDRAM standards (JESD79-5) and is compatible with server platforms that support DDR5 RDIMMs in the 288-pin form factor. Validated platforms include:

• Intel Xeon Scalable Processors (4th Gen Sapphire Rapids, 5th Gen Emerald Rapids) on platforms from Dell PowerEdge, HPE ProLiant Gen11, Lenovo ThinkSystem, Supermicro, and others
• AMD EPYC 9004 Series (Genoa) and 9005 Series (Turin) processors with DDR5 memory controller support
• Supermicro H13 and X13 server platforms
• Validated against major server OEM qualification lists (HCLs) for production deployment
• Compatible with hypervisors including VMware vSphere, Microsoft Hyper-V, Red Hat KVM, and Proxmox
• Supports DDR5 SPD (Serial Presence Detect) for automatic configuration by UEFI/BIOS firmware

As with all enterprise RDIMMs, mixing speeds or capacities within a memory channel is not recommended. For optimal performance, all DIMMs within a memory channel should be matched in speed, capacity, and rank configuration. Omnixon's technical team can assist enterprise clients in validating compatible memory configurations for specific server platforms upon request.

Ideal Use Cases

• AI & Machine Learning Inference Servers: Large language models and transformer-based AI systems require enormous memory capacity to hold model weights and KV-cache data in-memory. A 64GB DDR5 RDIMM enables high memory footprint configurations on a single server, reducing the need for expensive multi-node distributed inference setups.
• In-Memory Databases & OLAP Analytics: Platforms such as SAP HANA, Oracle TimesTen, Redis Enterprise, and SingleStore rely on holding entire working datasets in DRAM for microsecond-latency query response. DDR5-5600's high bandwidth directly reduces query execution time for memory-bound analytical workloads.
• High-Density VMware & Hyper-V Virtualisation Hosts: Enterprise virtualisation platforms benefit from maximum memory per socket to support higher VM densities. A single dual-socket server populated with 16× 64GB DDR5 RDIMMs provides 1TB of hypervisor memory, supporting 50–200+ virtual machines depending on workload profiles.
• High-Performance Computing (HPC) & Scientific Simulation: CFD, FEA, genomics, and climate modelling workloads are frequently memory-bandwidth-limited. DDR5-5600 provides the bandwidth headroom needed by multi-core Xeon and EPYC processors to sustain peak floating-point throughput without memory stalls.
• Cloud & Hyperscale Infrastructure: Public cloud providers and private cloud operators deploying dense compute nodes benefit from 64GB DDR5 RDIMMs to maximise memory per rack unit, reducing physical footprint while increasing the number of tenant workloads per physical host.
• Database Servers (OLTP & Mixed Workloads): Oracle Database, Microsoft SQL Server, PostgreSQL, and MySQL Enterprise benefit from large memory pools for buffer cache, reducing disk I/O and improving transaction throughput for high-concurrency OLTP environments.
• VDI (Virtual Desktop Infrastructure): Large-scale VDI deployments using Citrix Virtual Apps and Desktops or VMware Horizon benefit from maximising per-server memory to support more concurrent desktop sessions per host, lowering per-seat infrastructure costs.

Why Buy from Omnixon

Omnixon Global is a trusted B2B IT hardware distributor headquartered in Dubai, UAE, serving enterprise clients across the GCC region and internationally. We stock a comprehensive range of Micron server memory including DDR5 RDIMMs, enabling fast fulfilment for enterprise procurement teams, system integrators, and data centre operators across Saudi Arabia, the UAE, Qatar, Kuwait, Bahrain, Oman, and beyond. Our team of enterprise hardware specialists provides pre-sales technical consultation to validate memory compatibility with your specific server platforms and memory configurations, reducing the risk of procurement errors. All products supplied by Omnixon are brand new, sourced through authorised distribution channels, and supported by our enterprise account management team. Whether you are refreshing an existing data centre, deploying a new AI infrastructure cluster, or scaling a virtualisation platform, Omnixon provides the product expertise, regional inventory, and enterprise-focused service that GCC organisations rely on for mission-critical hardware procurement.

Related Products & Ecosystem

To build a complete, high-performance server memory solution, consider pairing this Micron DDR5 RDIMM with complementary products available from Omnixon's catalogue. Our Servers category includes DDR5-ready platforms from Dell, HPE, Lenovo, and Supermicro that are validated for DDR5-5600 operation. Our CPUs range covers Intel Xeon Scalable and AMD EPYC processors that feature native DDR5 memory controller support. For storage tiers that match DDR5-class server performance, explore our Enterprise SSDs (NVMe Gen4/Gen5) and Enterprise HDDs for capacity storage. High-bandwidth memory configurations also benefit from low-latency Network Adapters & NICs (25GbE, 100GbE, 200GbE) to ensure that network I/O does not become a bottleneck in memory-rich server deployments. Complete your infrastructure with our Network Switches, Server Racks & Enclosures, and UPS & Power Protection solutions to deliver a fully integrated, enterprise-ready data centre environment.