Dell, Asus, Lenovo, HP, MSI, Acer, and Gigabyte are among the PC makers that are designing systems around Nvidias RTX Spark , Nvidias new Arm based chip for Windows PCs. But the flagship RTX Spark PC may be from the same company that makes Windows: the new Microsoft Surface Laptop Ultra is a high end RTX Spark system that will offer up to 128GB of unified memory for “creators, developers, and AI builders.” Microsoft says the Laptop Ultra will be available “later this year” but didnt discuss any...