General purpose computers should not be used for bitcoin. 

Embedded hardware is not perfect but it's 1000x simpler and more verifiable, because uhm-oh it's simpler.

Broadcom is giving you a shit sandwich on raspberry pi for example.

Intel SGX is the literal punch line joke of the security industry.

Now AMD...

https://www.wired.com/story/amd-chip-sinkclose-flaw/