"What I'd like to find is hardware that is the most free, clean, known, i.e.,
known what is inside, whatever...and it needs to be available for purchase,
not discontinued."
All this is very vague; what is "clean hardware?" or "known hardware?".
There are only two points we should be interested in:
1. can the hardware be used with free software?
2. does it contain any malicous features? (vpro etc)
Beside of this, the whole discussion reminds me of one thing:
I still don't understand why "baked-in proprietary code" is considered as
fine by rms; I mean code you can't change without distroying the chip.
Can't this code spy on the users as well? What about a baked-in NSA backdoor?
If something like this is possible, maybe we should think about the initial
goales of the "100% free software pc" project again.
Nobody should take such an effort of work for creating a pc which can't even
provide privacy.