The consoles will be based on Navi. They are each their own instantiation of Navi, like the 5700 is. The 5700 gives us an idea of Navi's core performance per watt that you could try to extrapolate from. Navis next year, including console Navis, might be a bit different to Navis this year - in terms of, for example, the inclusion of RT stuff - but I'm guessing the core thermal and wattage characteristics won't be hugely different next year. So the 5700 is probably a good guide on those lines. I think it's clearer to say, though, that each of these parts, be it console or PC, are based on Navi, rather than one part being based on another part. Each is a distinct part, and the 5700 and XT gives us a first idea of what an instance of Navi can be like.