And then you actually go into the docs.... And: oh, 8 GB RAM should work, but let's have a 32 GB swap. The CPU should be fine, but let's overclock it. Oh, you shouldn't use Geth to ensure ecosystem health, but all clients except Geth require at least 16 GB of RAM. And geth will eat all of your disk spce if you're not careful.
So, for a single combination (Geth + Nimbus) it may just be possible to run this tower of babel on a Raspberry Pi. And.... The only thing it will be doing is... nothing, really.
This is just an example, there is plenty other hobbyists doing so.
And here detailed instructions for you to try at home: https://docs.rocketpool.net/guides/node/local/prepare-pi.htm...