I tried to run urbackup on raspi 3B+ and its very slow, so I will upgrade it to odroid XU4 or NanoPCT4 or something like that. But what to do with old raspi
For I wanted to install PiHole in my network, maby it would be ok for that purpose? Or is the LAN putthrough also too slow for that case?
The RPi would be fine, also a Pi Zero has enough power to run PiHole.
The network speed is not important for pihole, it only handles the DNS request, which are very tiny.
On my mobile phone I run a split VPN tunnel, which only tunnels my DNS requests to my pihole instance, and on “an average” day I have around 1 MB or so send and received data. So don’t worry about the network speed for pihole