Ah, but what if the base Ps5 needs a minimum of 36 CU to be back compatible with Ps4 pro games ? So your stuck with 8.x TF and a Pro model in Therory.
Pro model they can shoot for the roof (if it exists).
This makes marketing sense, as even Sony themselves were surprised how many xbox fans moved to the Ps4 because of its strength over OG Xbox.
Sony even said the pro was not just for 4K CB but also to tempt some users away from PC, although Xbox X came out a year later.
So, I can see logic in 8 and 13 from a business standpoint, if they exist I know nothing, if Sony go less than XsX they potentially loose some of those high end purchasers who want hight quality 3rd party gaming (who buy lots of games)
That wasn't the only reason Xbox fans switched. The main reason was actually the terrible PR XBO had going into launch. The backlash was so bad that MS reversed almost every policy before release and it became a giant meme on the internet. I even remember Xbox fans who were pissed at MS for changing the policies, it was surreal.
The quickest way they could do a PS5 with the PS5-related chips we know actually exist at the moment (Gonzalo, Ariel, Oberon) would probably be 2x Oberons. But this would be very costly, and you're looking at a PS5 Pro that at least $600 if not likely more, especially if it released this year. There's also the issue of making both GPUs communicate and appear transparently as a single GPU to programmers, something that hasn't really been resolved yet. Then there's the question of how do you fit two such chips on an APU without it being mammoth, or do you go discrete APU (which seems very unlikely). There's not a lot of ways a dual GPU theory really works out.
The only other options for a 13TF PS5 are another Oberon revision with a massively larger CU count, or some other PS5-related chip that shows up. But given how frequent and recent Oberon has been tested I doubt Sony would sink all that time, and R&D into it and not do similar for another chip. And in either case, if one of those possibilities exist we'd either have some semi-concrete proof in their existence through datamined benchmarks, or we'll see them surface within a couple of months. If that doesn't happen, that possibility goes flying out the window.
Even if PS5 Pro is 13TF and base PS5 is 8, you have to wonder what the split between the two would be. If it's 50/50 and the Pro is the one everyone wants, that means Sony just wasted 50% of their resources on a base PS5 that was done in by its own Pro variant. If it's 75/25 in favor of base PS5 but it's only 8TF and early adopters prefer the 12TF XSX, that means Sony's just wasted perhaps up to 50% of their resources again. If they go 50/50 and there's some infux of price-conscious early adopters who think the PS5 Pro is too far beyond their means, and 12TF XSX is either more plentiful or more appealing on the price/power offering than PS5 Pro, then Sony's just wasted perhaps up to 50% of their resources on the PS5 Pro.
It's not the same scenario I think MS is doing, because I think a lot of the recent Lockhart evidence is pointing to something that isn't a "normal" home console form factor, and it's still not known if it's releasing this year. If that holds out true, and Lockhart is something more like a portable hybrid or gaming tablet-like device, that's a clear delineation between it and XSX, that PS5 and PS5 Pro won't enjoy. That means they won't eat into each other's resources or markets.
That's why it makes more sense IMO to just focus on a base PS5 for now, and hold off on the Pro until 2 or 3 years down the road.
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BGs
give us a potential range from 8TF - 16TF ? 
the only thing he confirmed for sure is that it's not 9.X
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