Introduction to Xiaomi Xuan Jie O1 Chip

1、 Introduction
In today’s era of rapid technological development, smartphones are indispensable devices in people’s daily lives, and their performance and functions continue to receive attention from consumers. As the core component of smartphones, chips directly determine key performance such as computing power, power control, and image processing. As a globally renowned smartphone manufacturer, Xiaomi has always been committed to technological innovation and independent research and development. In May 2025, Xiaomi officially released its independently developed mobile SoC chip – Xuanjie O1, marking a significant breakthrough in the field of chip research and development and attracting widespread attention both inside and outside the industry. This article will provide a comprehensive and in-depth analysis of the Xiaomi Xuan Jie O1 chip, exploring its research and development background, technical parameters, performance, application scenarios, and market impact from multiple aspects.
2、 Research and development background of Xiaomi Xuan Jie O1 chip
（1） The necessity of independent research and development of chips
For a long time, Android phone manufacturers have mostly relied on chips from manufacturers such as Qualcomm or MediaTek, and have been subject to technological autonomy. This not only limits the autonomy of mobile phone manufacturers in product design and performance optimization, but also creates many uncertainties for manufacturers in the supply chain. For example, issues such as chip supply shortages and price fluctuations may affect the production and sales of mobile phone manufacturers. Therefore, independent research and development of chips has become a key measure for many mobile phone manufacturers to enhance competitiveness and achieve sustainable development.
（2） Xiaomi’s chip development process
Xiaomi started laying out chip research and development many years ago. In September 2014, the Pengpai project was approved, marking Xiaomi’s official entry into the path of chip research and development. In 2017, Xiaomi Pinecone launched the Pengpai S1 smartphone SoC chip and attempted it on the Xiaomi 5c smartphone. However, the Pengpai S1 did not achieve significant success in the market, but Xiaomi did not give up chip research and development as a result. At the beginning of 2021, Xiaomi restarted its “big chip” business and resumed research and development of mobile SoC. After years of effort and accumulation, Xiaomi finally successfully launched the Xuan Jie O1 chip in May 2025, achieving a major breakthrough in the field of mobile phone control chips.
（3） Technology accumulation and R&D investment
In order to achieve independent research and development of chips, Xiaomi has invested a lot of resources in technology research and talent cultivation. As of the end of April 2025, Xiaomi’s chip division, Xuanjie “Xring,” has been independently operated, with a cumulative R&D investment of over 13.5 billion yuan and a R&D team of over 2500 people. By 2025, Xiaomi is expected to invest over 6 billion yuan in research and development. These investments have provided solid support for the research and development of the Xuanjie O1 chip, enabling Xiaomi to make significant progress in chip design, process technology, architecture optimization, and other aspects.
3、 Technical parameters of Xiaomi Xuan Jie O1 chip
（1） Process technology
The Xuanjie O1 chip adopts TSMC’s second-generation 3nm (N3E) process technology. Compared to the first generation 3nm process, the second generation 3nm process has significantly improved power control, reducing power consumption by 15%. Advanced manufacturing processes enable chips to integrate more transistors on a smaller area, thereby improving chip performance and energy efficiency. According to Sheng Linghai, a semiconductor analyst at Gartner, 3nm chip design needs to overcome physical limitations such as quantum tunneling effects. Xiaomi’s ability to integrate 19 billion transistors proves that its EDA toolchain and packaging technology have reached international standards.
（2） Architecture Design
The Xuanjie O1 chip adopts the ARMv9 instruction set, and the CPU adopts a “1+3+4” eight core three cluster architecture. The specific configuration includes one Cortex-X3 ultra large core (with a main frequency of 3.36GHz), three Cortex-A715 cores (with a main frequency of 2.6GHz), and four Cortex-A510 small cores (with a main frequency of 2.0GHz). In addition, there are claims that the CPU of the Xuan Jie O1 chip adopts a “2+4+2+2” four cluster ten core architecture, consisting of two X925 ultra-high frequency cores (with a frequency of up to 3.9GHz), four A725 cores (with a frequency of 3.4GHz), two low-frequency A725 cores (1.89GHz), and two A520 energy efficient cores (1.8GHz). This multi-core and multi frequency architecture design enables the chip to allocate computing resources reasonably according to different task requirements, while ensuring high performance and effectively controlling power consumption.
（3） GPU configuration
The Xuan Jie O1 chip is equipped with Immortalis-G925 GPU, with a frequency of 1.795GHz. Compared to Snapdragon 8 Gen 3, the Adreno 750 (770MHz) frequency has significantly increased. The Immortalis-G925 GPU adopts Arm’s latest flagship graphics architecture, with a 16 core scale even surpassing MediaTek Dimensity 9300’s G720 MC12, and its theoretical graphics performance is worth looking forward to. The powerful GPU performance can bring users a smoother gaming experience and high-quality image rendering effects.
（4） Other characteristics
The Xuanjie O1 chip also integrates high-performance NPU modules and supports UWB (Ultra Wideband) technology. The NPU module can enhance the AI computing capability of chips, enabling smartphones to perform better in artificial intelligence applications such as intelligent voice assistants, image recognition, scene perception, etc. UWB technology can be deeply integrated with Xiaomi cars to achieve more accurate unlocking and locking functions for mobile phones, bringing users a more convenient user experience.
4、 Performance of Xiaomi Xuan Jie O1 chip
（1） Run score data
On the Geekbench 6.1.0 benchmark platform, a new Xiaomi phone model named “Xiaomi 25042PN24C” has revealed its benchmark data equipped with the Xuan Jie O1 chip. The highest single core score of this machine is 2709 points, and the multi-core score reaches 8125 points, surpassing the conventional performance of Qualcomm Snapdragon 8 Gen 3. There are also claims that the single core score of the machine has reached 3119 points, while the multi-core score is 9673 points. In terms of GPU performance, the OpenCL score of Immortalis-G925 reached a maximum of 22141 points. These benchmark data indicate that the Xuanjie O1 chip has reached an industry-leading level in performance and entered the first tier.
（2） Actual application performance
In addition to the benchmark data, the performance of the Xuan Jie O1 chip in practical applications has also received much attention. In terms of gaming, powerful CPU and GPU performance can ensure smooth running of games at high graphics quality and frame rates, reducing stuttering and frame dropping. In terms of multitasking, multi-core architecture can simultaneously handle multiple applications, improving user work efficiency. In terms of image processing, high-performance GPUs and NPUs can quickly process complex image algorithms, achieving high-quality photography and video recording effects.
（3） Energy efficiency performance
The Xuan Jie O1 chip also has excellent performance in terms of energy efficiency. Its unit performance power consumption has decreased by 35% compared to 7nm chips, which means that under the same performance output, the Xuanjie O1 chip has lower power consumption and can extend the battery life of mobile phones. At the same time, advanced process technology and architecture design also help reduce the heat generation of chips and improve the stability and reliability of mobile phones.
5、 Application scenarios of Xiaomi Xuan Jie O1 chip
（1） Smartphone
The Xuan Jie O1 chip will first be applied to Xiaomi’s high-end flagship phone, the Xiaomi 15S Pro. The Xiaomi 15S Pro equipped with the Xuan Jie O1 chip will have more powerful performance and richer features. For example, in terms of photography, the high performance of the chip can support higher pixel cameras and more complex photography algorithms, achieving better photography results. In terms of gaming, it can provide a smoother gaming experience and meet the needs of gaming enthusiasts. In terms of system operation, it can quickly respond to various operation instructions and improve the user experience.
（2） Tablet computer
In addition to smartphones, the Xuan Jie O1 chip will also be applied to the ultra high end OLED tablet Xiaomi 7 Ultra. On tablets, the Xuan Jie O1 chip’s large screen adaptation and multitasking capabilities will be fully utilized. Users can run multiple applications simultaneously on a tablet, perform multi window operations, and improve work and entertainment efficiency. Meanwhile, the powerful GPU performance can also bring users a more stunning visual experience, such as watching high-definition videos, playing large games, and more.
（3） Intelligent cars and IoT devices
The head of Xiaomi’s ecosystem enterprise stated that after the localization of chips, the collaborative innovation space for smart cars and IoT devices will be greatly expanded. The Xuanjie O1 chip is expected to be applied in Xiaomi’s smart cars and IoT devices in the future. In terms of smart cars, the high performance and low power consumption characteristics of chips can meet the needs of cars for computing power and endurance, realizing functions such as intelligent driving and intelligent cockpit. In terms of IoT devices, the miniaturization and low-power characteristics of chips can adapt to various application scenarios of IoT devices, such as smart homes, smart wearables, etc., promoting the implementation of Xiaomi’s “human car home full ecosystem” strategy.