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According to Wccftech, if AMD confirm the decision to use the 3nm node for your Zen 5 architecture, in this case you would have three options: the first is to postpone the production of the chips for 2024/2025, thus dictating a cadence of two years between a generation and the other one. The second option would be to stay with the 5nm production process, however, making use of the N5P node, a much more optimized version of the node already in use by AMD itself for the production of the next Zen 4 CPUs and by Nvidia for its GPUs. The third and most unlikely, would concern a renegotiation with TSMC of access to the 3nm node, which would ensure at best a much more limited production for 2024.
Source: TSMC