I have an always on HP ELITEDESK 800 G2 - I5-6500 3.20GHZ with an SSD. Uses about 20w. I recently measured power consumption over a few weeks. I unplug the moni

I have an always on HP ELITEDESK 800 G2 - I5-6500 3.20GHZ with an SSD. Uses about 20w. I recently measured power consumption over a few weeks. I unplug the monitor which saves a few watts. I love the Pi but it is not a server. My best experience of Pi is when the Pi does one thing e.g. uses rsync/rclone to back up all my data to an encrypted usb disk. Also, the box has built-in kvm/vnc which is handy as I need a ladder to get to it in my roofspace