I have a EVGA 700B PSU, it is only a few month old (around 5) and it is making a clicking noise under high load. It is not a mechanical clicking it sound like and electric noise. I keep it very clean, and it has very little dust in it. As of writing this i have never had my system crash. Is this something to be concerned about? Also I don't know if i did not notice it before or if it just recently happened. For most of the time iv'e owned it, it lived on the floor.