Micron DDR5 RDIMM 128GB 6400MT/s

The Micron DDR5 RDIMM 128GB 6400 MT/s represents a landmark in server memory density, packing 128 gigabytes into a single dual-rank registered DIMM using Micron's advanced 1β (1-beta) DRAM node. Operating at 6400 MT/s with a 64-bit wide data bus and ECC, this module delivers approximately 51.2 GB/s of peak theoretical bandwidth per slot, enabling modern multi-channel server platforms to achieve aggregate memory bandwidth exceeding 400 GB/s across an eight-channel configuration. The module employs a Registered Clock Driver (RCD) and on-die ECC (ODECC) in addition to system-level ECC, providing multiple layers of data integrity protection essential for mission-critical enterprise deployments.

Designed to align with JEDEC DDR5 standards and validated for AMD EPYC 9004/9005 series and Intel Xeon Scalable (Sapphire Rapids and Granite Rapids) platforms, the module supports CAS latency profiles optimized for both maximum throughput and balanced latency, with primary timings of CL46-45-45. The 1.1 V operating voltage and DDR5's inherent power management improvements—including on-module voltage regulation via PMIC—reduce per-bit energy consumption compared to DDR4, a meaningful efficiency gain at hyperscale deployment volumes. Programmable Page Policy and Decision Feedback Equalization (DFE) circuitry maintain signal integrity at 6400 MT/s across the full server backplane.

With 128 GB per DIMM, a 24-slot two-socket server can be configured with up to 3 TB of total system memory, directly enabling workloads that previously required scale-out architectures to run in a single node. This capacity milestone is particularly significant for large language model (LLM) inference, genomic analysis pipelines, in-memory OLAP engines, and real-time fraud detection systems where eliminating NVMe swap or distributed caching layers reduces latency dramatically. Micron's component-level binning and rigorous qualification cycles ensure lot-to-lot consistency required by and hyperscale integrators.

Ideal for

• Large Language Model (LLM) inference servers requiring multi-terabyte memory pools to hold full model weights in-DRAM without offloading to NVMe storage
• High Performance Computing (HPC) clusters running molecular dynamics, computational fluid dynamics, or climate simulations that demand maximum single-node memory capacity to reduce inter-node communication overhead
• In-memory databases such as SAP HANA, Redis Enterprise, or Oracle TimesTen where entire working datasets must reside in DRAM for sub-millisecond query response
• Virtualization hosts running hundreds of memory-intensive virtual machines, enabling higher VM density per physical node and reducing overall server footprint
• Genomics and bioinformatics pipelines performing whole-genome sequencing assembly or variant calling that require large contiguous memory regions for graph-based algorithms
• Real-time analytics and fraud detection platforms ingesting high-velocity event streams where columnar in-memory engines require sustained high-bandwidth, low-latency memory access

Technical specifications

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