XIAOMI(HK:01810) Guo Ji Jin Rong Bao·2025-05-27 10:14Core Viewpoint - Xiaomi's self-developed flagship SoC, the Xuanjie O1, has faced controversy regarding its development and relationship with Arm, which Xiaomi has publicly refuted, asserting that the chip is not a custom design from Arm and was independently developed by its team over four years [1][4]. Group 1: Development and Design - The Xuanjie O1 is a 3nm flagship SoC designed entirely by Xiaomi's Xuanjie team, utilizing Arm's latest CPU and GPU standard IP licenses, but the multi-core and memory system-level design, as well as backend physical implementation, were independently completed by the team [4]. - Xiaomi claims that the CPU of the Xuanjie O1 features a super-large core with a maximum frequency of 3.9GHz, significantly exceeding industry standards, achieved through numerous innovations and hundreds of layout iterations [4]. Group 2: Relationship with Arm - A previous article on Arm's website suggested that the Xuanjie O1 was a custom chip powered by the Arm Compute Platform, which led to public speculation; however, this article has since been removed [2]. - Arm confirmed that the Xuanjie O1 was developed by Xiaomi's team and utilizes the latest Armv9.2 Cortex CPU cluster IP, Immortalis GPU IP, and CoreLink system interconnect IP, supporting advanced 3nm process technology [4]. Group 3: Baseband and Supply Chain - The Xuanjie O1 employs an external baseband solution, specifically the MediaTek T800, which Xiaomi claims provides comparable upload and download experiences to other flagship smartphones while supporting 5G [6]. - Xiaomi's smartphone SoC strategy involves a diversified supply model, with MediaTek supplying 63% of the chips and Qualcomm providing 35%, indicating a strong reliance on third-party suppliers [7].