Hey, anybody have one of these? In my attempt to silence my rig, I've noticed that the 135mm fan in mine has a hugely irritating high-pitched resonant hum, not unlike a very faint plane going overhead. It's subtle, but INCREDIBLY annoying as the PC stays on in the same room and is about three feet away. It is the loudest fan in my case by far, despite having basically zero load. Just wondering whether it's a common issue or if I can replace the fan or something, or whether I should just bite the bullet and get one of those fancy passive cooled PSUs.