I’m running some passive cooled Fujitsu Futro S930 Thin Clients as a Proxmox cluster for my home lab.
I got them from Quant Electronic a German second hand electronic shop. They sell stuff from closed business.
The Futro S930 was 22 €. I added more Ram for another 10 € and a fresh new ssd for 30 €. In total 62 € with more power than a Pi for less money.
There are some newer more capable models, but I didn’t want to spend more money on them.
On my desktop machine, I’m running Nobara Linux for two years now and I do not look back. I have the old windows partition still set up as dual boot, but never bootet that since.
My small pc in the workshop (second hand Dell Optiplex USFF) I would like to switch to Linux, but I’m using Estlcam as Controler and I didn’t try yet to get that working with wine on Linux.