I’d like to know more about AMD specifically too. I’m well aware that PSP is their equivalent but there seems to be so little information out there about it. Is it really an equivalent? Is it as bad as ME? Can it be disabled? Does it have the same level of access as ME? Have their been any exploits of it yet?

The wikipedia page is rather bare. There’s a couple of papers linked to but frankly they go over my head. Is there any respectable analysis out there?