Someone made an effort to work out which are the latest AMD chips that were released just prior to the PSP (i.e. non-spy chips). The linked article gives a list resulting from their efforts.

This is interesting because intel began their spy chips in 2008. So an AMD from 2013 likely well outperforms the last of the spy-chip-free intels.

But this is just the 1st step. Now it would be useful to know which devices contain these AMD chips from 2013. In particular, laptops and mini PCs would be interesting. The search must be painful because ads for hardware tend not to mention the code names. In fact, h/w makers were not proud of their AMD selection and might altogether not mention AMD.