In the age of AI, what is a PC? Arm has its answer
Briefly

Microsoft has really thrown its weight behind the Arm architecture. The Arm version of Windows 11 is superficially indistinguishable from the x86/x64 version, with the same user interface and functions.
For the last year or so, we've also had to contend with 'AI PCs.' Pretty much everyone agrees that these are PCs that run AI applications thanks to an additional 'neural processing unit' (NPU) alongside their CPU and GPU.
Microsoft then added to the confusion with a new category: Copilot+ PCs. These are Windows 11 PCs with a 'compatible' processor and an NPU capable of 40.
Microsoft makes no distinction between x86 and Arm architectures in its definition of what qualifies as a 'Windows 11 PC,' leaving buyers to find out for themselves.
Read at Computerworld
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