it is extremely easy for me to give absolutely no credibility to any leak at the moment. It is just too easy for a random person who wants to troll to write something on reddit/4chan/pastebin.
Could very well be that out of those leaks/rumors there is one that has is right, but that is bound to happen if we have 1000 guesses. The worst kind of leaks are the ones where they also try
to spread rubbish about all future AAA games including their release date like GTA 6. "Hey I work for XXX, PS5 is going to be YYY and GTA 6 releases in ZZZ"
Even if someone has access to a devkit I'd guess chances are pretty high that the devkits are completely different from the final console and all hardware in them are just placeholders to somewhat
mimic what is about to come in late 2020.
We actually don't need to wait long to see what we are in for. in 8 days AMD is having a keynote computex about Zen2 and Navi, both of which are in the PS5, and I guess seeing the actual Navi hardware chips
many 13TF+ dreams are going to die that moment.
I am looking forward to what Navi has to offer, especially when looking at how many CUs, clockspeeds and what improvements they made over previous GCN iterations. Heat and power draw will tell us what
they will be able to get away with in the next gen consoles.
Also important to note that whatever GPU will be in next gen consoles it won't be able to come with max CUs due to yields and binning. It doesn't make sense from an economic perspective, because buying millions
of chips with 64 CUs would be way too expensive for console manufacturers.
And looking at the Vega VII we can see that 60 CUs at high clockspeeds are running too hot, require too much cooling and absolutely require too much power draw.
I took the graph from OP and crossed out what I feel is impossible(well extremely unlikely). This is just for the PS5.
7nm Navi will be able to clock higher than 1200/1300 MHZ. I am sure of that given how that is one of the advantages going to better architectures and manufacturing nodes. (This is where we got most of the performance increase in the previous generations of GPUs from). Personally I'd expect a lower CU count and higher clocks. Something like 52CUs at 1500MHZ is perfectly reasonable I guess. Especially when yields improve throughout the next 18 months.
I would expect roughly the same % difference in clockspeeds between the GPU that is inside next gen consoles and discrete desktop graphics card counterpart and what was the case for the PS4 and the Radeon HD 7790 or 7850/7870 or whatever it was. (it was a custom chip though). It was around 10-15% difference iirc. So if desktop Navi cards are at like 1700MHZ I think 1450-1500MHZ for the PS5 chip are possible and reasonable. Going down 150-200MHZ would also be at a lower voltage meaning lower power draw and less heat which is exactly what console manufactures are looking for.
Maybe Navi is a clockspeed monster and exceeds 2000MHZ for the desktop cards, but I doubt that and I think we should expect Navi desktop cards to be around 1600-1700MHZ (boost clocks).