Fujitsu's Arm-Based Monaka Data Center CPU at Hot Chips 2026 – ServeTheHome (www.servethehome.com)

At Hot Chips 2026, Fujitsu unveiled its next-generation Arm-based server CPU, Monaka, which aims to redefine performance and energy efficiency in data center environments. Building on the legacy of the A64FX, Monaka features a chiplet architecture with up to 144 CPU cores and employs advanced 3D stacking techniques for optimal performance. This CPU is engineered to handle demanding AI workloads and features energy-saving capabilities with ultra-low voltage operation, making it particularly relevant given the rising energy costs associated with AI and data processing. Significantly, Monaka is built on Armv9.3-A architecture and includes unique technical elements such as a 256-bit SVE2 SIMD and innovative power optimization strategies. It utilizes TSMC's 2nm and 5nm processes for its core and SRAM dies, respectively, ensuring improved density and performance through die-to-die hybrid bonding. With the capability to configure from 1 to 8 NUMA nodes and support for confidential computing, Monaka is tailored for modern workloads. Offering two models—high-performance at 500 Watts and high-efficiency at 350 Watts—Monaka is expected to launch in 2027, with plans already in motion for an even faster Monaka-X using a 1.4nm process. This announcement highlights Fujitsu's commitment to advancing AI infrastructure and enhancing computing efficiency in data centers.