My budget is ~500 Euro.
I haven’t built a PC in 10 years, I gave no idea where to start.
It will mostly be used to run Nextcloud, Minecraft Server and some future homelab projects.
I’m thinking of using this for the case https://www.the-diy-life.com/introducing-lab-rax-a-3d-printable-modular-10-rack-system
Where do I start? What CPU or motherboard would you recommend? I want it to be somewhat future proof and also act as a NAS
I disagree with those saying that you can’t do a build for that budget, but I would suggest looking into used parts, at least for some things, to improve the result significantly.
Since your system goal doesn’t seem to be storage related, as nextcloud includes storage obviously, but typically isn’t used to house multi-terabyte data sets. So assuming you can make that work for the “future homelab projects” to with dual 500gig NVME as storage. Search for a used mITX board+CPU that can accommodate that (has the slots), and go from there. Things like CPU cooler, if not part of a possible mainboard+CPU bundle, should be selected after the case at that is the limiting factor for it. Didn’t skimp on RAM size if you can (new or used is fine, depends what you can get in your area).
With this list you’re basically done to get it up and running.