Last week, I spent two days hearing how Microsoft and NVIDIA are reinventing the PC with RTX Spark, the new system on a chip powering the Surface Laptop Ultra and several other Windows PCs this fall. It the first time weve seen powerful Arm CPUs joined together with NVIDIA Blackwell GPU technology and up to 128GB of ultra fast unified memory on a single chip. Theoretically, RTX Spark should allow for thin yet powerful laptops and a few small desktops that can handle AI tasks locally, as well as...