Building the next generation of devices for developers: Surface RTX Spark Dev Box | Microsoft Devices Blog
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Microsoft Surface
June 2, 2026
Building the next generation of devices for developers: Surface RTX Spark Dev Box
By
Andrew Hill, Corporate Vice President, Surface Product
Software developers are some of the most ambitious makers we serve. They push devices harder, ask more of their tools and expect their environment to help define the pace of modern software creation. Development today means longer running jobs, larger models and a growing need to prototype and iterate locally rather than paying for every cloud call. That is why we embarked on a project to build two new Surface devices designed specifically for the needs of these makers.
Earlier this week, we introduced Surface Laptop Ultra , a high-performance laptop built for developers, creators and technical professionals who need serious performance wherever they work. Today at Microsoft Build, we are introducing Surface RTX Spark Dev Box , a compact developer PC engineered with NVIDIA RTX Spark superchip and built on the Windows developer platform, designed for local-first AI development. Surface RTX Spark Dev Box is for developers who want to prototype, fine-tune and run capable models on their desk, and reach for the cloud when the work calls for it.
Together, Surface Laptop Ultra and Surface RTX Spark Dev Box represent the next step for Surface: purpose-built devices for the people building what’s next.
A new category of Surface, built for developers
The way developers build software is fundamentally changing. AI models are growing in capability and complexity, agentic workflows demand sustained compute, and every iteration can incur cloud costs, even when the work doesn’t require state-of-the-art models. Surface RTX Spark Dev Box changes that equation. It’s a purpose-built Windows AI developer box that puts up to 1 petaflop of AI compute directly on the desk. By bringing powerful AI compute to the edge, developers can reserve frontier model calls for truly frontier problems and handle the rest on their own hardware. The result is a development workflow that can be more efficient and responsive, with developers in control of where their compute dollars go.
Sustained AI performance in a compact form factor
At the heart of this new developer machine is the NVIDIA RTX Spark superchip, combining a powerful NVIDIA Blackwell RTX GPU and an ultra-efficient NVIDIA Grace CPU to deliver up to 1 petaflop of AI compute with 128 GB of unified memory. That’s enough compute power to run 120B+ parameter models with 1 million token context locally at interactive speeds or fine-tune models that previously required cloud GPU instancesi.
With an aluminum chassis engineered to double as a heatsink, Surface RTX Spark Dev Box is designed for the workloads that matter most to developers: long-running training jobs, large model inference and complex agentic pipelines that benefit from consistent, sustained performance.
Built for the tools and workflows developers already use, out of the box
Surface RTX Spark Dev Box ships with Windows 11 Pro pre-configured for developers at the image level. This brings a purposeful set of defaults, preinstalled tools and tuned settings so the development environment is the default from first sign-in.
The setup keeps developers in their workflow: dark theme, taskbar simplified for development, Widgets removed, Do Not Disturb on. Developer Mode is enabled. PowerShell 7 is the default shell.
Under the hood, WSL 2 is configured with GPU passthrough and CUDA support. VS Code, GitHub Copilot, Git, Python and Node.js are installed. Your favorite IDEs, agents, coding assistants, frameworks and libraries all work on Surface RTX Spark Dev Box, whether you prefer the Windows side or WSL.
Surface RTX Spark Dev Box is also a world class entry point to the rest of the Microsoft AI stack. AI Toolkit for VS Code brings model conversion, fine-tuning and...