There have been a number of rumors of fabrication 7nm to 5nm node switching for upcoming AMD parts. AMD has updated some of the their roadmaps confirming a thing or two. First off, ZEN3 based processors and RDNA2 based GPUs will be fabricated at 7nm.

The slides originate from AMD, and cover the 2019 to 2022 production roadmap. Contradictory a recent rumor that reported a possibility where AMD would make a move to use a 5nm production at TSMC already for ZEN3 (Vermeer), this roadmap outlines how things are planned.

AMD with a set of slides now creates a more clear picture, ZEN3 is confirmed to remain at 7nm, 5nm however will be used for ZEN4, which sounds like a far distance future processor, but in reality, we're talking the next year 2021 already. The roadmap actively shows ZEN 4 alias AMD Ryzen 5000 to appear between 2021 and 2022, and that serirs is fabbed at 5 nanometers alongside Navi RDNA3 graphics chips. These would be used an "Advanced Node" during the same period.

As you all know, AMD is also working on RDNA2, actually in two lines. One for GPU architectures RDNA 2 (gaming) and then there is CDNA (computing). Both of these are also confirmed to be fabbed at in 7nm nodes as well.

AMD: ZEN3 and RDNA2 fabbed at 7nm as originally planned