So now that I finally have my setup working as quietly as possible with proper fan control, I have discovered a noise previously masked by the too-high fan RPMs / B12 drone issue. Namely, my Corsair AX650 has a buzzing noise.
This is a problem because although it is soft, it is distinctive, irritating, and still audible at sitting distance — when no other sound is present in the room, that is. I specifically chose this model over the Silverstone Gold Evo 750 (with short cable kit) because of its "pseudo-fanless" quality (fan doesn't turn on until high load). It was a pain
cramming all those cables in my mATX Silverstone FT03, but I kept telling myself it would be worth it for the low noise.
This puts me in a little bit of a quandary. First of all, is this normal for the AX650? Does anyone have an AX650 which is actually silent at low draw, or are all PSUs expected to create at least a little buzzing (that is normally inaudible over typical "loud PCs")? Would you recommend that I RMA it? If I RMA it, will Corsair actually check the replacement before sending it out to make sure it is silent? When RMAing a PSU, do you typically have to send the whole thing with cables back, or can I just send the PSU (if I have to take out all my cables, then fugeddaboudit!
)? Finally, does anyone have an alternate recommendation?
Thanks for your input guys,