Microsoft Unveils Surface RTX Spark Dev Box With 1 Petaflop for Local AI Development
Updated
Updated · Windows Blog · Jun 2
Microsoft Unveils Surface RTX Spark Dev Box With 1 Petaflop for Local AI Development
3 articles · Updated · Windows Blog · Jun 2
Microsoft introduced the Surface RTX Spark Dev Box at Build, a compact Windows developer PC aimed at running, prototyping and fine-tuning AI models locally instead of relying on cloud calls.
The machine uses Nvidia's RTX Spark superchip with a Blackwell RTX GPU and Grace CPU, delivering up to 1 petaflop of AI compute and 128GB of unified memory.
Microsoft said that is enough to run 120B-plus-parameter models with 1 million-token context locally at interactive speeds, targeting long training jobs, inference and agentic workflows.
Windows 11 Pro ships preconfigured for developers with WSL 2 GPU passthrough, CUDA support, VS Code, GitHub Copilot, Git, Python and Node.js, tying the box into Microsoft's wider AI stack.
The Dev Box will go on sale later this year in the U.S. through Microsoft.com, replacing Qualcomm's canceled Windows on Arm dev kit and joining the new Surface Laptop Ultra in a developer-focused lineup.