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The Nvidia-powered Microsoft Surface Ultra. Image: Microsoft.

Microsoft has officially unveiled the Microsoft Surface Ultra, the first full-fledged Windows PC to run on an Nvidia main processor, saying the device is "made for a kind of work that does not fit in a standard laptop."

Why it matters: The move, previously reported by Axios, puts the hottest name in chips behind Windows as Microsoft tries once again to redefine the PC for the AI era.