Dpc looks fine,
Is the noise really loud? It won't hurt anything but can be annoying,I doubt rma would fix it,they would just test it with no fault found
Would be handy to test/borrow another psu
It's pretty loud since it has to contest with my 4 GT Scythes @ 1300RPM~ with my headphones at full volume I can't hear it but whilst I'm on TS and gaming with low sound it's always there.. it definately does my head in :/