Just wondering if AMD use the same manufacturing plant for both, or if they are separate entities and too dissimilar in their method of manufacture for that to be feasible.
Does GloFo no longer make the IO dies for AMD's current, 7000 series, CPU's? I'm pretty sure they are for 5000. The CPU dies are indeed made in Taiwan, TSMC. I seem to remember GloFo declined further investments in node reduction beyond about 12nm, about the time AMD went to TSMC....
Global Foundries was originally AMD's CPU production, but AMD sold the company off. It has been quite a few generations since GF made important AMD products.
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