Should not be a problem. However, if it is a problem. Some signs would be:
System wont start.
System crashes as it tries to boot O/S(blue screen/green).
System crashes as it tries to shutdown(blue screen/green).
CPU uses most power at boot up and shutdown process(carpc use).
Check cpu specs to see what the max. watts it uses at peak performance. If its max watts is less than say,80w it should be fine provided that other components such as Ram/usbs are not drawing too much power.