Digital Foundry believes they may have found PS5's chipset

[JEMC]

Unless AMD has somehow massively improved their GCN architecture with Navi, I find it ver, very hard to believe that it will reach 1.8GHz on something as limited by airflow as a home console.

So far, their fastest graphics processor based on the GCN architecture is the Radeon VII, based on Vega 20 and made on 7nm, with a base clock of 1,400MHz and a boost clock of 1,750MHz. And that thing needs three fans to cool its 295W TDP.

So, as I said, unless AMD has done magic with Navi, I don't see how PS5 can have a 1.8GHz GPU.