SK Hynix MCR DIMM 128GB DDR5 8800MT/s

The SK Hynix MCR DIMM 128GB DDR5-8800 (HMCG18AGBRC230N) is a Multiplexer Combined Ranks DIMM engineered to sustain 8800 MT/s data transfer rates, representing a significant leap beyond conventional DDR5 RDIMM operating ceilings. MCR DIMM architecture integrates an on-module data buffer — the Multiplexer Buffer (MDB) — that decouples the electrical load of the DRAM ranks from the memory channel, enabling the module to operate at frequencies that standard registered DIMMs cannot achieve while maintaining signal integrity across the full 64-bit-wide bus plus ECC.

Built on SK Hynix's advanced DRAM fabrication process, this 128GB module uses a dual-rank configuration that the MDB presents to the host controller as a single logical rank, reducing the number of active chip-select signals seen by the CPU. This topology is specifically designed for platforms such as Intel Xeon 6 (Granite Rapids) that support the MCR DIMM specification, unlocking memory bandwidth well beyond what is achievable with standard DDR5 RDIMMs at equivalent capacity points. The result is a module combining high capacity with high throughput, addressing the tension between density and speed that limits conventional registered memory.

Target workloads include high-performance computing, large-scale in-memory analytics, AI/ML inference and training with large model footprints, and latency-sensitive database engines that require sustained memory bandwidth alongside deep per-socket memory capacity. The 128GB density per slot allows enterprise servers to populate substantial aggregate memory capacity while each slot continues to deliver the full 8800 MT/s rated bandwidth, making this module well-suited to bandwidth-saturating enterprise applications running on next-generation two-socket and single-socket Xeon 6 server platforms.

Ideal for

• Large-scale in-memory databases (e.g., SAP HANA, Redis Enterprise) requiring simultaneous high capacity and sustained memory bandwidth per socket
• AI and machine learning inference serving with large transformer models that exceed the capacity of standard DDR5 RDIMM configurations
• High-performance computing (HPC) simulation workloads — such as CFD, FEA, and molecular dynamics — that are bound by memory bandwidth rather than compute throughput
• Real-time analytics and streaming data processing platforms (e.g., Apache Spark, Flink) where aggregate memory bandwidth directly limits pipeline throughput
• Virtualization-dense hosts running memory-bandwidth-sensitive workloads across many simultaneous VMs on Intel Xeon 6 platforms
• Genomics and bioinformatics pipelines performing large sequence alignment and variant-calling operations that require rapid traversal of multi-gigabyte reference datasets

Technical specifications

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