Electrical Engineering

I want to know why the top-of-the-line CPUs and GPUs from Intel, NVIDIA, and AMD are all bragging about the fabrication process (7nm and 5nm) and trying to be consistently smaller. At the same time, on the other side of the industry, the everyday utility ICs like power management ICs, boos or buck converters, etc, never mention which fabrication process are they using?

Is it possible to find out what fabrication process, wafer size, etc these jellybean parts are made of? Is it at all important? Is it even possible or makes sense to make such chips in cutting-edge 4nm and 5nm processes?

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What fabrication process is being used for jellybean parts

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