So wait the Series S is basically an option to play next gen games on a less powerful version of the current One X? Seems a bit fecking daft.
Series S is not less powerful than One X. One X is based on ancient Jaguar processor and having new Zen 2 processor is quite a big upgrade.
4TF on new RDNA 2 is not the same as earlier NAVI so even in terms of graphic it is also quite a big upgrade.
Plus it will have SSD and same I/O approach of its bigger brother XSX. It's quite capable machine and for people who are on budget, this could be a great option.
Edit : Forgot about the memory bump and it is new GDDR6.
As for scaling down games to work on it, NX gamer made a video about it. He is next best thing after Digital Foundry on YouTube