you need a motherboard with the correct socket type for the cpu, so for ryzen am4 cpu's you need an am4 socket motherboard. :- https://www.singular...amd-socket-am4/
I can install heat-sink and fan but WITH-OUT put the THERMAL INTERFACE MATERIAL for test, and after ready to install OS put this material, attach heat sink and fan, open PC, if again all ok install the OS?
no, you always install the cpu and fit the heatsink and fan with thermal paste, then never remove heatsink and fan unless you have a problem. thermal paste will probably already be applied to the bottom of the heatsink and will just need fitting if not then you will need to add thermal paste before fitting the heatsink.
how to build a pc :-
just for info.
from my understanding with amd ryzen cpu's if the code ends with box it comes with heatsink and fan and if it ends with wof then there is no heatsink and fan included so you will need to buy one as well.
so looks like all the x family cpu's don't come with a heatsink and fan same as all new intel k cpu's don't.
Edited by terry1966, 07 August 2017 - 03:01 AM.