Microsoft opens RTX Spark Surface preorders for local AI

What is changing?

Microsoft opened preorders for Surface Laptop Ultra and Surface RTX Spark Dev Box on October 7. Built around NVIDIA RTX Spark, the two devices combine up to a 6,144-core Blackwell RTX GPU, a 20-core Grace CPU, and up to 128 GB of unified memory. Microsoft says configurations can run models exceeding 120 billion parameters locally and reach a theoretical one petaflop of FP4 AI performance. The laptop starts at $2,599 and becomes available October 16; the U.S.-only Dev Box costs $5,999 and begins shipping in November.

The Dev Box arrives with Windows 11 Pro, WSL 2 GPU passthrough, CUDA, VS Code, GitHub Copilot, Python, and Node preconfigured. The laptop brings the same shared-memory platform to creative production, development, and local agent workflows. For production teams, the practical shift is the ability to test large image and video models and coding agents without sending data to the cloud at every step. The stated limits are theoretical or vendor-tested, so actual model size, quantization, context length, and sustained thermal performance still need independent measurement.