Originally Posted by Kaltenbrunner
How many PSU's or GPUs are tested in a quiet room for whine I wonder ?
I've had GPUs that were a bit annoying sometimes, but not enough to RMA or try to alter myself.
HHMMM Mosfets shake aswell, I wonder what all else shakes around in SMPS, that might be heard. I wonder how much energy actually ends up as sound ??? But I don't think I learned much acoustics in highschool physics.
Figure I update on my PSU situation after about a year.
I am running EVGA Supernova 1000w PQ still to this day, and I run it in Eco Mode, so the fans don't kick in until 400 watts is used throughout the system.
Power supply is SILLLLLLLLENT, and I have fan controls on the back of PC for a quick silent profile, I can hear refrigerator more from my room than PC.
It's an amazing powersupply, $200 worth.
They don't really test for noise, because many manufacturers don't care, they test for fan noise, but not for coil whine, many manufacturers will deny your RMA if it's coil whine related.
EVGA was very good about it, they allowed people to return/exchange GPUs for that reason at one point, unlike many other companies
Their GPUs suffer more or less from that issue, but PSU's are amazing. Yes, the mosfets vibrate, that is absolutely true, along with copper coils you see through the PSU grill.
The better the PSU, the less chances it will happen. Because you can dampen it with proper coil installation around it.
I dumped tons of glue manually (using glue gun) on my Corsair 650w, and reduced the coil whine by around 60-70%, but not completely silent like EVGA's power supply.
EVGA all the way. I think they have 10 year warranty on PSU as well. Corsair has 5