If you want to get into running a home lab, this world probably be a nice start. So throw proxmox on it and host all the services you want (in containers or VMs). Media server like jellyfin, maybe a nextcloud, storage/Nas services, automate your home with home assistant.
It has a relatively large amount of memory for that generation of system, but also will probably not exactly sip power for the performance your getting. So if power is expensive where you are, think twice about it.
That’s what I said with “much hotter for longer”. If it’s constantly thermal throttling, that’s gonna be an issue. Of course OC’ing also will. 50°C just isn’t an issue. Also older models have CPUs that either don’t throttle at all, or do it less well/effectively.
The CPU is perfectly happy sitting at 50°C. It is slightly happier at 30, but it doesn’t actually help in any way unless you run into throttling, or run (much) hotter for longer. It’s fine.
Some might state that the CPU is probably gonna live longer, but seriously have you ever had a CPU die on you cause it was old (or even die at all, even)? Again, it’s fine.
Having something that mostly agitates the air (not even really moving it) like a low-hundreds-rpm fan would also work. As would using one of those passive heat pipe coolers that are also overkill (especially with a fan, but just leave that off), but have the same “number looks better” effect.
That thumbnail alone means “no, thanks”.
Nextcloud can’t do two-way sync on Android. At all. That’s like core functionality for the product IMHO and there’s a feature request open I think. When I found that out, I basically spit out my coffee. It’s fine if you just want to upload photos you take, that kinda works (but my god is it fragile).
Nextcloud is pretty good at quite a few things, including extensibility, but having some omissions in functionality that boggle the mind.
Depends what you want to do. If you want only docker containers, it’s the wrong tool. If you want to run a mixture of VMs and LXC containers, it’s literally a management interface made for it. So it’s pretty good at it.