Microsoft Tunes Windows for Nvidia RTX Spark Laptops

Microsoft is tailoring its Windows operating system specifically for Nvidia's new RTX Spark platform. Powered by Arm-based central processors and Blackwell graphics processing units, these laptops represent a shift from traditional x64 architecture. To ease setup, Microsoft introduced a new onboarding system allowing users to search for, install, and launch local artificial intelligence agents from the Microsoft Store in two clicks. Launch partners for these local agents include Hermes, Perplexity, and OpenClaw, with Meta's Muse slated to arrive in the future.

To handle software built for older systems, Microsoft is continuously refining its Prism emulator for the microarchitecture of RTX Spark chips. The operating system also improves unified memory management, allowing hardware like the Surface Laptop Ultra to utilize up to 128GB of memory for large AI models while reserving resources for system responsiveness. Users with 24GB or 32GB configurations can manually adjust memory allocations between the system and GPU using a slider inside Nvidia's control app. In testing, emulated gaming at 1440p resolution with DLSS performance settings achieved a stable 60 frames per second on medium settings.

Gaming compatibility is receiving a boost as anti-cheat engines begin supporting Windows on Arm. Titles such as Fortnite, Marvel Rivals, Arc Raiders, Counter-Strike 2, and Dota 2 operate out of the box, while Activision's Ricochet, EA's Javelin, and PUBG plan full support by 2027. Additionally, Microsoft revealed hardware and cloud developments, including the $49.99 Xbox Nano controller shipping in November, the Maia 300 chip for cloud AI tasks, and the new Microsoft-Decision-1 routing model.