Fujitsu and Rapidus partner to build 1.4nm AI chip entirely in Japan with government backing

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Fujitsu plans to develop an advanced 1.4nm AI chip manufactured entirely in Japan by Rapidus, marking a significant push toward sovereign AI capabilities. Japan's NEDO will fund roughly two-thirds of the ¥58 billion ($363 million) development cost. The NPU will integrate with Fujitsu's Arm-based Monaka CPUs for deployment in server systems and the Fugaku NEXT supercomputer.

Fujitsu Commits to 1.4nm AI Chip Development with Rapidus

Fujitsu plans to develop a cutting-edge 1.4nm AI chip in partnership with Rapidus, according to recent reports from

Nikkei Asia

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. The project represents Japan's most ambitious effort to establish a domestic semiconductor industry capable of producing advanced chip production entirely on home soil. Japan's New Energy and Industrial Technology Development Organization (NEDO) is expected to cover approximately two-thirds of the estimated ¥58 billion ($363 million) initial development cost, with Fujitsu applying for NEDO-operated funding programs to support the initiative

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Source: Tom's Hardware

Source: Tom's Hardware

The Fujitsu and Rapidus partnership marks a critical milestone in Japan's efforts to build sovereign AI capabilities and reduce dependence on foreign technology for processing sensitive data. Both the design and manufacturing will be handled domestically, distinguishing this project from typical arrangements where Japanese companies rely on overseas foundries like TSMC

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Dedicated AI NPU Chips for Server Systems

The planned AI chip will function as an NPU designed specifically for AI inference in server systems and related applications. Unlike general-purpose GPUs that dominate AI training workloads, dedicated AI NPU chips handle inference tasks more efficiently by optimizing calculations for deployed models

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. While NPUs typically appear in consumer devices like PCs and smartphones, Fujitsu intends to deploy these processors in data center environments.

Source: Wccftech

Source: Wccftech

Fujitsu plans to integrate the NPU with its Arm-based Monaka CPUs in a single package. The Monaka platform represents a cutting-edge offering featuring up to 144 cores per socket in a 3D chiplet layout, supporting PCIe 6.0 and CXL 3.0

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. These combined processors will power the Fugaku NEXT supercomputer, Japan's next-generation flagship system. Fujitsu's current data center CPU, also called Monaka, is built on TSMC's 2nm process, but the new NPU will be designed and manufactured in Japan entirely through Rapidus

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Rapidus Targets 1.4nm Mass Production by 2029

The deal represents Rapidus's second confirmed order from a Japanese customer, following Canon's commitment to ordering image-processing semiconductors for digital cameras. Rapidus CEO Atsuyoshi Koike revealed in February that the company is in active discussions with more than 60 prospective customers for chips targeting AI, robotics, and edge computing applications

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Rapidus plans to begin construction of its second factory in 2027, targeting 1.4nm AI chip production around 2029. The company's first facility in Chitose, Hokkaido, is currently ramping toward 2nm mass production in the second half of fiscal 2027

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. Rapidus has partnered with supply chains players including IBM, Canon, and other Japanese equipment suppliers, with the primary focus of competing with TSMC in the race for cutting-edge nodes

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Japan's Government Incentives Drive Semiconductor Ecosystem Revival

Japan's Ministry of Economy, Trade, and Industry has nearly quadrupled its budgeted support for advanced semiconductors and AI development to approximately ¥1.23 trillion for the current fiscal year. Rapidus has secured roughly ¥1.7 trillion in combined government and private investment to date, reflecting the administration's commitment to reviving Japan's semiconductor capabilities

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Fujitsu emphasized that domestic chip production will become increasingly important as countries compete to develop sovereign AI capabilities amid economic security concerns. The company aims to embed encryption technology directly into its chips to protect data during processing, addressing national security priorities

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. This focus on security-enhanced hardware positions Japan to handle sensitive workloads without relying on foreign technology.

While Fujitsu doesn't produce its own GPUs and maintains existing partnerships with Nvidia and AMD, the NPU development signals a strategic shift toward building indigenous AI processing capabilities. Fujitsu plans to connect its CPUs with Nvidia GPUs on the same substrate by 2030, but the Rapidus partnership offers a parallel path for AI inference workloads

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. Industry observers will watch closely to see whether Japanese chip players can successfully scale production and achieve competitive yields, given that they've been rebuilding their semiconductor ecosystem from ground zero over recent years

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