Originally Posted by altsanity
Only really cheap power supplies, the type you get in OEM cases. For example I have a 420W Thermal Master lying around I use for testing. There is transformer hum like no-ones business at low load. The fan is also annoying at low load as it has a kinda loud ticking noise (likely caps or bad solder) from the voltage regulator.
On any properly built, quaility power supply you should not be able to hear any of the electrical components. Ever
Cheap junky PSUs will make electrical noises many times, it is true.
But I would not say Only
they do. From what I've read on SPCR
& other forums even the Rolls Royce PSUs like the Seasonic Platinums have been known to suffer from this problem. Another thing I've been reading is that the 2nd gen Seasonic X series is less prone to it than the new 3rd (KM3).
I'm wondering what other PSUs may be susceptible to this. It's hard to go by brand because most brands have multiple manufacturers & designs
.Edited by FrankCastle - 7/17/13 at 12:29am