How to build a home develop server?

Question

Do it yourself

In connection with the move, it is not possible to take your system unit on which the server for development development was located. Therefore, I want to make the server already in place.
There will be a dozen sites on the server, but users will not naturally be on them. The tests will run. And related stuff.
Options

1. Buy used laptop
   
2. Assemble yourself
   
3. Nettop
   
4. Rent a VPS
   

Key features in order

1. Price
   
2. Efficiency of development
   
3. Little noise
   
4. Performance
   

Please advise where to look.

Answer 1

If for development, then vagrant virtualization.
Iron is not needed.
Of the benefits - a separate machine for the project. Otherwise, you will not stock up on iron, or you will use one for different projects (which is very inconvenient).
The second plus is convenient synchronization.
The third plus is that you do not have to pay for electricity for a separate car (this is a rather significant amount per year).
The main plus is that some projects still require vagrant for development, so you can’t get away from it.

Answer 2

Yasam collected just a processor processor
: AMD FX-8300
RAM: 16GB
SSD: Kingston 240 GB
HDD: 1000 GB
HDD: 300GB for backups
PSU: 500-550 watts
I don’t remember exactly, but see the power lines at a price of
4500 weighs a couple of heavy sites and 5-6 small, 2-3 virtual machines, a 1c server, a couple of browsers 30-40 open bookmarks.
Project budget is about 40k.
Prots amdeshny because for the price and performance for server tasks is optimally suited