TechAIMicrosoftHow Windows is being optimized for Nvidia’s RTX Spark laptopsMicrosoft has focused on local AI models, gaming, and memory management.Microsoft has focused on local AI models, gaming, and memory management.by Tom WarrenOct 15, 2026, 2:30 PM UTCShareGiftImage: Cath Virginia / The VergeTom Warren is a senior correspondent and author of Notepad, who has been covering all things Microsoft, PC, and tech for over 20 years.Microsoft and Nvidia held a launch party for the first wave of RTX Spark laptops last week in San Francisco, where a new wave of AI PCs took center stage amid a packed crowd and a lively hands-on area. A day after the media event, I was invited to a quieter Nvidia event to hear a lot more about the new RTX Spark computing platform. While Nvidia’s new laptops might look like regular Windows machines, the chips inside are Arm-based, instead of the traditional x64 architecture used by AMD and Intel. Combined with a powerful GPU, RTX Spark is designed for the future of AI, and it means a lot of work has gone into getting these laptops ready for launch.One of the biggest challenges was getting Windows ready for AI agents and local AI models.
The big selling point of RTX Spark is the combination of Arm CPU, Blackwell GPU, and unified memory to enable powerful AI models to run on a laptop, so the experience of setting up an AI agent needs to be quick and easy.“When users get into Windows for the first time, they’ll see a new Get Started experience that will launch on an RTX Spark laptop that allows them to find the agent they want, get started with that agent, install it, and get to that agent in only two clicks,” says Peter Dawoud, principal program manager at Microsoft.Agents can be installed and updated through the Windows Store, so you don’t have to worry about finding updates or figuring out what dependencies each one needs. “We’ll continue to develop it and add more features so that agents can offer a whole new bunch of experiences coming through Windows,” Dawoud says.Hermes, Perplexity, and OpenClaw are the first three officially supported agents in Windows at the launch of RTX Spark, but Microsoft is working on bringing others on board. That will presumably eventually include Muse, which Meta announced last week is coming to Windows at some point in the future.Getting started with Hermes was mostly a two-click experience in my testing, but I did run into trouble getting OpenClaw set up properly. The app kept complaining that a local gateway hadn’t been installed properly, and it took an uninstall and reinstall to get everything working fully.I’ve been using OpenClaw for a variety of tasks over the past week, but it’s going to take a lot more testing to really understand the value of this local AI support beyond obvious tasks like coding. Powerful as the RTX Spark chip is, large local models are still a lot slower at responding to prompts than cloud models, so I get the feeling that I’ll use this more for tasks I want to run overnight or leave processing in the background.Microsoft has also done a lot of work behind the scenes to optimize Nvidia’s RTX Spark chips for all the things you’d expect to do on a Windows laptop.
Unlike an Intel or AMD laptop, RTX Spark laptops make use of Microsoft’s Prism emulator for apps that don’t have a native Arm version.Emulation was a problem on Windows on Arm for more than a decade, but the launch of Qualcomm’s first Snapdragon X series laptops a couple of years ago has helped RTX Spark laptops now benefit from a variety of Arm-native apps and Microsoft’s improved emulator.There’s still a lot of tweaking required for Nvidia’s new chips, though. “Emulation isn’t generic. Each platform needs tuning,” says Dawoud. ”Each core is different. How we translate x64 to that core needs to be highly optimized, and for RTX Spark we’ve done a lot of work to optimize for its microarchitecture.”Some of that optimization has been focused on gaming, particularly because CPUs often dictate frame pacing of games and how smooth they feel, while a GPU does the heavy lifting of rendering the game. Microsoft is quietly shipping Prism updates all the time. “Every month we ship an update to improve compatibility,” says Dawoud. “It’s something we’re constantly working on at the Windows team.”Microsoft has been focused on memory optimization for RTX Spark laptops, too.
Microsoft’s own Surface Laptop Ultra can ship with up to 128GB of unified memory, making it possible to load huge models into memory. “We made incredible investments in Unified Memory Architecture to enable you to load as much as possible into the 128GB,” says Dawoud. “But we are also conserving a little bit of space to make sure the system maintains its responsiveness, and the applications running on top of Windows continue to run well and continue to be responsive.”Microsoft has completed optimizations for how memory works on RTX Spark, including tuning for power and performance, maximizing battery life, and ensuring that you can run a game while rendering a video in the background. You can even manually adjust how much of the unified memory is dedicated to the GPU side with a slider in Nvidia’s Windows app.This slider is useful if you have an RTX Spark laptop with 24GB or 32GB of memory, so you can balance more to the GPU for particular apps and games. While Microsoft and Nvidia maintain that RTX Spark laptops shouldn’t be considered gaming machines, they’re more than capable of running the latest AAA titles.“Nvidia and Microsoft have expended a lot of energy over the last many, many, many, many months trying to think deeply about making sure that RTX Spark can deliver a true form of RTX gaming experience,” says Dawoud.One of the first parts of making sure RTX Spark supports gaming was getting anti-cheat vendors on board with Windows on Arm. Some of that work started with Qualcomm, but it has clearly accelerated with Nvidia’s involvement.Fortnite, Marvel Rivals, Arc Raiders, Counter-Strike 2, Dota 2, and many other games that have anti-cheat engines will be supported out of the box on RTX Spark laptops.
Nvidia and Microsoft are also working with a variety of other anti-cheat providers to make more games available in the future.Activision’s Ricochet anti-cheat engine, used in Call of Duty, will support RTX Spark at some point in 2027, and EA has committed to getting its Javelin anti-cheat working in Battlefield in early 2027. PUBG will start working on RTX Spark laptops in the first half of 2027, and Riot Games has committed to getting League of Legends and Valorant running on RTX Spark laptops at some point in the future.Microsoft is also bringing its advanced shader delivery system to RTX Spark. This allows the Xbox app to preload game shaders during download. It’s the same experience that’s been available on Xbox Ally devices, allowing you to download a game, click launch, and have shaders automatically precompiled so you don’t have to sit there and wait to play.I haven’t run into many game compatibility issues during my testing, even though nearly every game I’ve tested has run emulated.
Qualcomm’s Snapdragon chips just weren’t powerful enough on the GPU side to make gaming a reality, but Nvidia has put a much more powerful GPU inside the RTX Spark.Your mileage in gaming is going to vary depending on the title, but for the most part I’ve found that medium settings, running at 1440p and DLSS performance, will get you to a stable 60fps in most games. In some titles you may need to drop the resolution or settings lower, though. This definitely isn’t as good as a dedicated gaming laptop, but for something that’s roughly on the level of a MacBook Pro it’s more than good enough for gaming on the go.The last part of Microsoft’s work on RTX Spark involves Windows features. Surprisingly, Copilot Plus PC features like Recall aren’t available
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