Does somebody know a good micro PC? I don't know if that is the right name for them, basically a pc with the size of a big usb stick. For example to run a small TeamSpeak oder some other server sided software.

Intel compute stick?

@irene What is a Raspberry PI?

Mac mini?

A Raspberry Pi Model 3 B+ would be perfect here. Get a nice case with a fan and you have a more than capable server.

@irene I run two of my Discord Bots with about 7000 servers each on it, so I had to get cooling to make it stay at under 40 °C. At least three cores are always maxed out.
Without cooling, it would slowly increase temperature until it reached 80 °C, which is when it will force a shutdown.

@irene Yeah, but it still only draws about 7 W, so it's cheaper than renting a server. ^^

Teamspeak wouldn't run on a raspberry pi though, they don't offer an arm package afaik.