Micron DDR5 RDIMM 128GB 2Rx4 5600MHz CL46 32Gbit Server Memory MTC40F204S71RC56BR

Brand: Micron | Category: Memory (RAM)

SKU: MTC40F204S71RC56BR | Part #: MTC40F204S71RC56BR

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Product Overview

The Micron DDR5 RDIMM 128GB 2Rx4 5600MT/s CL46 (32Gbit) is a flagship enterprise memory module purpose-built for the most demanding server and data centre environments operating today. As one of the highest-density single-module DDR5 server DIMMs commercially available, it delivers 128GB of ECC-protected capacity per slot, enabling system architects to build massively memory-rich platforms without exhausting DIMM slot availability. Leveraging Micron's advanced 32Gbit (32Gb-per-die) DRAM technology and the dual-rank, quad-die-per-package (2Rx4) organisation, this module represents the cutting edge of registered DDR5 memory engineering. For enterprise IT managers, cloud infrastructure operators, and HPC engineers across the GCC and globally, this module is a strategic component in next-generation server builds and capacity upgrades.

DDR5 as a standard brings transformative improvements over DDR4: doubled burst lengths, on-die ECC, improved power management through on-module voltage regulation (PMIC), and fundamentally higher bandwidth ceilings. The 5600MT/s speed grade pushes memory bandwidth to levels that directly translate into measurable throughput gains for bandwidth-sensitive applications such as in-memory databases, large language model (LLM) inference, real-time analytics, and virtualisation platforms hosting hundreds of concurrent workloads.

Key Features & Benefits

• Extreme Density at 128GB per DIMM: Built on Micron's 32Gbit DRAM die, this module delivers the highest practical single-DIMM capacity available in the DDR5 RDIMM form factor, maximising total system memory while conserving precious DIMM slots for future expansion or mixed configurations.
• 5600MT/s High-Speed Operation: Running at 5600 megatransfers per second, this RDIMM delivers substantially higher raw bandwidth than DDR4-3200 predecessors, providing the memory throughput that modern multi-core server CPUs — including Intel Xeon Scalable (Sapphire Rapids, Emerald Rapids) and AMD EPYC (Genoa, Bergamo) — are designed to exploit fully.
• On-Die ECC (ODECC) for Enhanced Data Integrity: DDR5 incorporates per-die ECC correction natively within the DRAM chips themselves, catching single-bit errors before they propagate to the memory bus. Combined with the system-level ECC provided by the RDIMM architecture, this delivers a multi-layered data protection model essential for mission-critical enterprise workloads.
• Registered (RDIMM) Architecture for Stability: The registered buffer decouples the memory controller from the DRAM loads, enabling higher DIMM counts per channel and improved signal integrity in multi-DIMM configurations. This is mandatory for enterprise platforms requiring maximum memory capacity and sustained stability under 24/7 operational conditions.
• 2Rx4 Organisation for Optimal Bandwidth: The dual-rank, x4 device width topology delivers a balance between capacity and memory bus efficiency. Dual-rank operation engages rank-switching prefetch techniques that keep the memory bus utilised and reduce effective latency under load, benefiting multithreaded server workloads.
• On-Module Power Management IC (PMIC): DDR5 integrates voltage regulation directly on the module via a dedicated PMIC, improving power delivery accuracy, reducing noise on the memory bus, and simplifying motherboard power supply design — all contributing to greater overall system reliability and power efficiency.
• Industry-Standard SPD 5.0 and JEDEC Compliance: Full JEDEC DDR5 specification compliance with SPD 5.0 hub ensures seamless plug-and-play operation in validated server platforms, eliminating compatibility uncertainty and simplifying procurement and deployment processes for enterprise IT teams.
• Micron Tier-1 DRAM Manufacturing Pedigree: Sourced directly from one of the world's three leading DRAM manufacturers, this module carries the quality assurance, process traceability, and supply chain integrity that enterprise procurement standards demand, with no third-party rebranding or relabelled components.

Technical Architecture

This module is organised in a 2Rx4 (dual-rank, x4 device width) topology across a 288-pin DDR5 RDIMM PCB. The 32Gbit per DRAM die density allows Micron to populate the module with fewer physical chips compared to lower-density die technologies, improving the signal routing environment on the PCB and contributing to consistent electrical performance across the operating temperature range. The registered clock driver (RCD) on the RDIMM buffers the command and address signals, ensuring clean signal delivery to all DRAM devices regardless of loading, which is critical in dual-socket server platforms where memory channels may be heavily populated.

DDR5's architectural shift to two independent 32-bit sub-channels per DIMM (rather than a single 64-bit channel as in DDR4) doubles the command bus bandwidth and increases the granularity of memory access, reducing latency for smaller transaction sizes common in mixed workload environments. The CL46 primary latency at 5600MT/s is consistent with JEDEC-defined high-speed DDR5 specifications and represents the operating point where Micron's 32Gbit die delivers optimal stability across the supported voltage range (1.1V nominal for DDR5).

ECC width is x72 (64-bit data + 8 ECC bits), providing single-bit error correction and double-bit error detection (SECDED) at the system level, layered above the per-die ODECC for comprehensive memory subsystem protection.

Performance & Capacity

At 5600MT/s with a 64-bit effective data bus width per sub-channel (two sub-channels per DIMM), the theoretical peak bandwidth per DIMM exceeds 44.8 GB/s, a figure that represents a 40% or greater improvement over DDR4-3200 at comparable rank configurations. In dual-socket platforms with eight DDR5 channels per socket, aggregate system memory bandwidth can exceed 700 GB/s, a level that meaningfully accelerates memory-bound HPC, AI inference, and large dataset analytics workloads.

The 128GB capacity per module allows servers with 16 DIMM slots (a common dual-socket Xeon or EPYC platform configuration) to reach 2TB of total system memory — sufficient to hold very large in-memory datasets, support dense virtual machine deployments with hundreds of VMs, or accommodate the memory footprints of large transformer-based AI models during inference. Latency at CL46 with the 5600MT/s clock translates to an absolute latency of approximately 16.4 nanoseconds for the CAS latency component alone, which is competitive within the DDR5 speed grade ecosystem.

Compatibility & Integration

This DDR5 RDIMM is designed for compatibility with server platforms based on Intel Xeon Scalable 4th and 5th Generation processors (Sapphire Rapids-SP, Emerald Rapids-SP) and AMD EPYC 4th Generation (Genoa, Bergamo, Siena) processors, all of which natively support DDR5 memory channels at speeds up to 5600MT/s or higher. Supported server families include platforms from HPE ProLiant Gen11, Dell PowerEdge 16th Generation, Lenovo ThinkSystem V3, Supermicro X13 series, and other JEDEC DDR5-compliant server motherboards.

• JEDEC DDR5-5600 standard compliant
• 288-pin RDIMM form factor — standard server DIMM slot compatible
• SPD 5.0 hub with I3C interface for platform management integration
• 1.1V nominal operating voltage per DDR5 specification
• Operating temperature: 0°C to 85°C (standard commercial/industrial server range)
• Compatible with IPMI and DCMI server management frameworks for memory health monitoring
• RoHS compliant, meeting environmental regulatory requirements for GCC and EU markets

Ideal Use Cases

• AI & Machine Learning Inference Servers: Large language models, recommendation engines, and neural network inference workloads require enormous working memory to hold model weights and activation tensors. 128GB DDR5 RDIMMs allow inference servers to load multi-billion parameter models entirely into DRAM, eliminating storage I/O bottlenecks during runtime.
• High-Density Virtualisation Platforms: Enterprise VMware vSphere, Microsoft Hyper-V, and KVM-based hypervisors benefit directly from maximising per-server DRAM capacity. With 128GB modules, a 16-DIMM server reaches 2TB of VM memory, supporting hundreds of concurrent virtual machines with generous memory allocations per VM.
• In-Memory Databases & Real-Time Analytics: Platforms such as SAP HANA, Redis, MemSQL (SingleStore), and Oracle In-Memory Database require sustained high bandwidth and low-latency access to entire working datasets held in DRAM. DDR5-5600 at 128GB density is purpose-aligned for these deployments.
• High-Performance Computing (HPC) & Scientific Simulation: CFD, FEA, genomics, climate modelling, and molecular dynamics simulations routinely exhaust memory capacity and bandwidth. 128GB DDR5 RDIMMs enable researchers to solve larger problem sizes per node, reducing inter-node communication overhead in distributed HPC clusters.
• Cloud & Hyperscale Infrastructure Consolidation: Cloud service providers and hyperscale operators deploying high-core-count EPYC or Xeon platforms benefit from maximum DIMM density to minimise per-VM memory cost and reduce the physical server count required to meet memory SLA commitments to tenants.
• Enterprise Database Servers (OLAP & OLTP): Oracle Database, Microsoft SQL Server, and PostgreSQL deployments running complex analytical queries or high-throughput transactional workloads perform measurably better with higher memory bandwidth and capacity, reducing query execution times and increasing concurrent user capacity.
• VDI (Virtual Desktop Infrastructure) Deployments: Large-scale Citrix Virtual Apps, VMware Horizon, and Microsoft AVD environments serving hundreds of simultaneous users per host node benefit from the memory density of 128GB DIMMs, enabling higher user consolidation ratios and reducing infrastructure capital expenditure.

Why Buy from Omnixon

Omnixon Global operates from Dubai, UAE, positioning us as the premier enterprise IT hardware distributor serving clients across the GCC region — including Saudi Arabia, Qatar, Kuwait, Bahrain, Oman, and the broader Middle East and Africa markets — as well as enterprise buyers worldwide. Our inventory of Micron server memory modules, including high-density DDR5 RDIMMs, is maintained to support the procurement timelines of enterprise and government IT projects in the region. Our team of experienced IT hardware specialists understands the nuances of server memory compatibility, platform validation requirements, and the regulatory and logistics frameworks of GCC procurement. Whether you are expanding an existing data centre, refreshing server infrastructure for AI workloads, or sourcing components for a greenfield HPC deployment, Omnixon provides the product authenticity, documentation, and pre-sales technical consultation that enterprise buyers require. All products are sourced through authorised supply chains, ensuring genuine manufacturer components with full traceability.

Related Products & Ecosystem

To build a complete, high-performance server memory solution, consider pairing this 128GB DDR5 RDIMM with complementary products available from Omnixon's extensive catalogue. Compatible enterprise server platforms from vendors including HPE, Dell, Lenovo, and Supermicro provide the validated platform foundation for DDR5 memory deployments. For storage subsystems that match the throughput capabilities of DDR5-equipped servers, explore our range of Enterprise NVMe SSDs and Enterprise SAS/SATA SSDs offering the low-latency storage needed to feed high-bandwidth memory systems. High-core-count CPUs from Intel Xeon and AMD EPYC families — also available through Omnixon — complete the compute layer. For data centre infrastructure supporting your server deployments, our portfolio covers Server Racks & Enclosures, Rack PDUs, UPS & Power Protection systems, and high-speed Network Switches and Network Adapters & NICs to ensure your entire infrastructure stack is sourced from a single trusted regional partner.