Ok so here is my story. 3 weeks ago i got a new PSU (the cx550m) installed it and it failed after about a week of usage. After it failed i noticed that it was making a very slight noice when i put my ear right next to it and when it was off. So i RMA'd it. Corsair sent me a new one 4 days ago and it has been working fine. But the new one i got is also making that noice (its very subtle i have to put my ear next to it to hear it) Is this something i should be worried about?