Microsoft and Nvidia are betting on artificial intelligence to improve the performance of older, unoptimized x86 Windows applications on their latest Arm-based RTX Spark PCs. Announced at Computex 2026, Nvidia's RTX Spark Superchip aims to enhance speed and compatibility for legacy apps. Microsoft emphasized the potential of 'agentic AI' at its Build 2026 conference, demonstrating how it can convert and validate x86 applications for better execution on Arm systems. Currently, 90% of user time on Windows on Arm PCs is spent on applications that run natively. However, challenges persist, as some legacy business applications and games struggle under emulation, often requiring developers to manually adjust code for optimal performance. Despite these hurdles, Nvidia and Microsoft are committed to integrating AI agents that can manage app performance without constant cloud interaction. While they acknowledge that not all issues will be resolved instantly, they are working on ensuring compatibility with anti-cheat systems to satisfy the gaming community, which remains a critical market for Nvidia.