I have the same problem only with a Corsair AX850. I am definately not hitting even close to the max power consumption on it, but if my sound card is in any other PCI slot besides the top 1X slot it causes the audio to crackle, hiss, and whine. I moved the sound card down closer to the power supply and as i got closer, the crackling became louder. Is there any solution to this problem. The power supply i bought brand new so I don't see how it could be broken.