@niuulianov The PSP is a different topic entirely, but I'd note that achieving freedom is cryptographically impossible on AMD CPU's with a PSP unless someone was to break the digital handcuffs that prevent the replacement of the PSP's software.

A fair amount of free hardware designs do exist (the issue is coupling and manufacturing), but sadly free hardware doesn't yet exist: https://www.gnu.org/philosophy/free-hardware-designs.html

Librebooted thinkpads are a good choice, as they do have a free driver for the intel integrated graphics, including a free VBIOS, but the age of such hardware is sadly showing.

I've discovered that a KGPE-D16 with dual Opteron 62xx's is the way to go - although such requires a great deal of technical skill in sawing, drilling, grinding and EEPROM flashing to get such working (which I happen to have).