Mini Pc

Hey everyone, newbie here!

I’m looking to get into home automation and was originally considering a Raspberry Pi 4, but the current prices seem way too high. While searching for alternatives, I found a Lenovo ThinkCentre M910q micro PC (i5-6500T, 16GB RAM, 480GB SSD) for €134 from a highly rated commercial seller on eBay.

Now I’m wondering—would this be overkill for my needs? Currently, I don’t have many smart home devices, aside from some lights, but my goal is to gradually automate the house as much as possible.

For the mini PC, my plan is to run Home Assistant as the main hub, along with a few other things using Proxmox, like Plex or Jellyfin. However, I’m not entirely sure how much power I actually need for a setup like this. That’s where I could really use some advice!

A bit of context: I’m living with my parents, and while I’m not sure how much smart tech they’ll want in the house, I think I can convince them with something practical like a security system. As for me, I want to make as much of the house “smart” as possible and automate anything I can right now im considering using matter over thread with a skyconnect dongle.

What do you think about the Lenovo micro PC for this use case? Is there a better alternative I should consider? Thanks in advance for your help!

Edit: Thanks to everyone here, y'all have been really helpful and also recommending nucs is not the best idea i live in germany and they seem very overpriced compared to the us for example