Can you help me choose a motherboard and processor for a smart home?

Question

Computers

People, I'm not a hardware guy, I don't know much about new trends, there was a need to put a computer in the house.
The main tasks are maintenance of smart home systems, video surveillance, media player, web server and mail server for personal use. I want to make everything spin through the hypervisor (XEN). Windows will be hosted (where would it be without it), respectively, VPA-passthrough and tench (perhaps more than one) are needed. I plan to plug everything into a 19 "form factor.
What I want is everything in Feng Shui as much as possible and with a moderate budget. Please advise the most suitable CPU and motherboard for these needs.
And another question - in the order of nonsense, if you subsequently buy an external GPU for toys How hard will it be to make friends?

Answer 1

Windows (where without it)

Without it - to forums like w3bsit3-dns.com, where people calmly do everything else on the Raspberry Pi.
But for Windows and toys - a separate computer, without making anyone's head.
Putting the tasks of a gaming computer and servers running around the clock in one heap is a bad idea anyway.

Answer 2

0. XEN - a stoned miracle with crooked python control scripts. I ran away from him to KVM and have no regrets.
1. I assume you know all the problems with the topic "rack server at home". This is noise, and the need for round-the-clock cooling, and redundant power supply.
2. Theoretically, any 19 inch junk with Avito will cope with your tasks.
3. If there is a PCI-E x16 in the server and you personally have locksmith skills in drilling a hole in order to release a cord to the riser from the server, the problem is solved.

Answer 3

put a computer in the house

I plan to stick everything in a 19 "form factor

It is worth starting with the fact that all rack equipment, by virtue of sharpening for work in a dense packing in a cabinet, realizes the cooling efficiency with the performance of fans.
That is, a 1u server in reboot and good load modes sounds like a good household vacuum cleaner at maximum power. And just like a vacuum cleaner sucks dust. If there is no domestic ground floor with good sound insulation, all this will not be very fun. There are, of course, "quiet" servers, but only at the expense of cold and dull processors.
Yes, and rack - this is one way or another miniaturization with the resulting price tags ...
It's better to think about two "boxes" - something on passive cooling for round-the-clock tasks of average performance and just a computer / laptop for work.

Answer 4

Lord Jesus. and you plan to do all this without skill and experience?)) Next comes MY PERSONALLY POINT OF VIEW!!!
I would buy - the last percent on the intel i3-i5 (look at the grandmas), all this in the MiddleTower (you can take a small one, but the price) case - for blowing a 120mm valve, for a Zelman percent 120-140mm valve, for blowing a 120mm valve)) and it wonderfully stuffs into any mezzanine or similar.
Install the OS - debian (if you don't know how - win10 ltsc, then on Windows - Hyper-V) and put KVM for virtual machines there. Chut-crap at the moment is complete, although there are pluses, but there are too many minuses. easier than KVM. If we can’t master KVM, then we install the VirtualBox of the
“smart home”, video surveillance, media player, web server and mail server"
All this software will work without a hitch. what on the PC what on the virtual machine, if you need specific programs - let me know, I'll give you info