The two top ones host invidious, searx, and yacy on one and lotide (what I'm talking to you on) and matrix on the other, they both have Intel Atom D2550s. The bottom one has an Intel Core i5-4570TE, and hosts basically everything else including my reverse proxy server.

At some point I'd like to move to low-end ryzen embeddeds, because they are either as powerful or more powerful than anything I have and remain fanless, but one step at a time (and finding something that powerful that's inexpensive and scavenged from a roadside sign is tough sometimes)