Revving / click sound after installing new PSU + fan rpms

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roz1281

Gawd
Joined
Nov 1, 2004
Messages
618
Hey guys. I put this in General HW since I'm thinking it's PSU related but could be other hardware. So Installed an EVGA SuperNOVA GT 650w (with 'auto' eco mode), and after a couple days I am noticing a sound in my system. It's like something is 'revving up', almost like a tiny motor, then a soft click or tap. Pretty fast like vrooom click vrooom click over and over. Only when I have certain things open , like streaming video or google maps. Running games or benchmarks or idling in windows it's quiet. I'm not even sure it's the PSU, it's nearly impossible to pinpoint where sound is coming from. I've opened it up and used a paper towel tube, and it's still hard to tell. From outside it sounds like it's coming from an opening in the psu shroud, but not near the PSU. It did not do this before installing new PSU which is why I'm thinking that. Would it make that noise if ECO mode is turning on and off rapidly? This one doesn't have a switch to disable it. Trying to decide if I should return it. With the PSU installed and the fan pointing down it is hard to see if the fan is spinning, but it doesn't look like it's moving at all even when the sound happens.

Edit: I want to stress that this doesn't sound like any fan revving that I've heard, more like an electronic revving, like a little RC car or something.

One other thing is that my Chassis 3 fan, after updating BIOS at the same time as PSU, is spiking to 19,000 RPM in the bios and in windows monitoring software. It's every 5 seconds or so, but depending on the polling rate, maybe it's more and that is the noise? Visually, my fans seem to be spinning consistently with eachother at the reported ~500 rpm. I'm guessing no as I still see them spiking even when I don't hear sound.

ASRock Phantom Gaming 4 a/c
Ryzen 5 3600 on stock cooler
NVIDIA Geforce 1660 Super
M.2 SSD + SATA SSD
 
Point the PSU face up and check if it does it when it enters in and out of eco mode.

I have a Seasonic that clicks when I turn on the PC and when I turn off the PC. No revving though.
 
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Ok, thanks. It's been running so far, but I will try this. Will have to slide the PSU out and un-manage some cables :)
 
Check for loose cables ticking to the PSU.
Turn eco power off, Windows and mobo handles it well already.
 
Really hard to tell from your description. Either coil whine (are you familiar with what that is? search some examples on YouTube), or a issues with a fan. Are all your fans spinning normally when the noise is made? Maybe a fan is ramping up and stopping? Do some more digging and report back.
Confirm PSU fan is working, and not trying and failing to start when under load.
BIOS fan speed reporting can be glitchy and can spike like that. Seen it many times.
 
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