I would in addition, recommend that you find a shop  where you can specify what you need in a computer and have it assembled by them, as I always do. That way you get a system that does what you want, on an O/S that you want, and have generally got all the warranties in place if it was totally done in the shop for you and not at home by you.....just my 2 cents Canadian.. ...

 

Once in a while I look around,
I see a sound
and try to write it down
Sometimes they come out very soft
Tinkling light sound
The Sun comes up again