I've noticed that my old power supply didn't make a clicking sound when I turned it on, but it seems like many modern ones do. Is this just a characteristic of newer models or is there a specific reason behind it?
5 Answers
Not all of them have this feature, but it’s really useful for troubleshooting. If a part fails, that click can help indicate where the problem lies.
Exactly! It's good to know there's a purpose behind it.
I have a PSU that clicks when it’s off, too! Not sure about the on sound, though.
Not every power supply makes that clicking sound, but it's common among those that do. Typically, it’s just a relay inside clicking when it powers up.
For higher wattage supplies, that clicking sound is pretty normal. It usually comes from a relay that helps manage the inrush current, preventing issues like tripped breakers.
I had no idea! That makes me feel better about the sound.
Yeah, it's a neat way to keep everything running smoothly.
Many power supplies do click. For example, my 2021 Corsair RM750x clicked right at startup and shutdown, while my newer 2024 RM850x has a slight delay before clicking. It’s a standard feature likely linked to improved efficiency in design.
That makes sense! It’s like a little alert that something’s happening inside.