A:Answer What's making the noise? The video or the cpu fan.
If it's the video card, you'll need to consider a different board,
which will cost big bucks and be a hassle.
If this is happening during gaming, tune down your specs
( anti-aliasing, etc ) a little. RX580s are known to be loud during intense gaming.
If the cpu fan is loud, what are you doing? The only time make noise is if I run
VERY cpu intensive programs ( math stuff, etc. ) If you're not doing this,
take it back so they can clean the cpu & fan and reapply new thermal paste.
If that doesn't help, the fan is defective.
If the power supply is making noise, it is defective unless you're loading the machine with 2 video cards or something.