I find a lot of 10 year old Dell PowerEdge servers for basically free these days, some loaded with 128gb+ RAM. They work perfectly well with TrueNAS, pfSense, or even more powerful stuff. If you dont need a thousand cores, I always suggest them to people. Otherwise they end up in the dump..
Would love to know where, I want to convince friends they should get a home server, even if its just to use it as a NAS
99% of people will be better served by a single consumer PC instead of enterprise gear, don't convince them to buy a poweredge!
if you absolutely must, you can still buy standard form factor mobos from supermicro or asrock with a BMC and put them in a standard, quiet desktop case