Hardware requirements of Jitsi

Hey there

Is there somebody who knows the general Hardware requirements for a Jitsi server (in general)?

And if i want to set up a jitsi server for, may say, a maximum number of 20 users at the same time, how many cores and memory should i get for my server?

thanks a lot

greetings Mandelbrot

2 cores / 8 GB RAM should work with default setup