Microsoft and Nvidia used Computex 2026 in Taipei to unveil RTX Spark, a Windows-on-Arm PC platform built around a 20-core Arm CPU, Blackwell-class Nvidia graphics, up to 128GB of unified memory, and fall-2026 systems from Microsoft Surface, Asus, Dell, HP, Lenovo, MSI, Acer, and Gigabyte. The headline is not merely that Surface is getting Nvidia silicon again. It is that Nvidia is trying to move its AI workstation stack from deskside Linux boxes into premium Windows laptops. If it works...