Well I know its the fan. Whats strange is this is the 2nd one in two different builds clicking. Its the same kind of noise when you take a crappy old case fan and slow it down... then you get that light click only this isnt so light because of the fans size I assume. I could RMA but id almost rather stick a Noctua or Nexus fan inside the PSU and run that then pay shipping cost for an RMA. I think im more ticked about the amount of time I took hiding all my cables just to know I am going to have to remove them Thanks for any input.