I'm so disappointed: My Leadex Gold 750W PSU just developed awful coil whine after years of (near) silent service. That was the the thing I was the most impressed with when I first got it after a string of Seasonic's useless X-Series screamers.
This is weird, because there's not even a GPU in the system (so often it's dGPUs that induce whine), and the whine is constant, not just under certain loads. Now I'm going to have to start gambling on replacements, and trying to find a PSU without coil whine these days is like trying to find an LCD without backlight defects. I'm not inclined to buy another SuperFlower based PSU after this.
Don't be same happened to my Seasonic x-760(SS-760KM), fan barely spinning, or not spinning most of the time, and then horrible coil whine after 5.5 years onward. The way i try to mitigate it now, is try to get a silent power supply, but one which has a fan spinning at low rpm, or changeable hybrid mode, and to try to aim so that the PSU uses 60%-65% of the its max rate wattage for the 12v rail in regular gaming/ or other workload.
From the extensive research i did for myself, your best option would be Corsair RM650x or RM750x (v2 as well, it's fan profile is even more quiet than the original), or Seasonic prime ultra platinum 650/750 if u can afford the extra cost.
Last edited by Dogzilla07; 06-19-2018 at 10:52 AM.