Nothing against AdaFruit, but this really should link to Roy Longbottom's detailed comparisons [1] that this very short post links to.
[1] http://www.roylongbottom.org.uk/Cray%201%20Supercomputer%20P...
[1] http://www.roylongbottom.org.uk/Cray%201%20Supercomputer%20P...
Cray-1 vs Raspberry Pi - https://news.ycombinator.com/item?id=38758355 - Dec 2023 (180 comments)
[1] http://www.roylongbottom.org.uk/Cray%201%20Supercomputer%20P...