Comment by crapple8430

A powerful enough machine (usually limited by RAM, not CPU) will let you run a hypervisor OS like Proxmox which helps a lot with making things secure and flexible. You might also want to have RAID, ECC memory. It quickly starts to make sense to build a proper home server rather than cobbling together a bunch of low end hardware. The tipping point is probably when you want more than 1-2 hard drives worth of storage.