Two very strange problems.

FeFiDoh

FeFiDoh

FeFiDoh

Soldato
Joined
17 Aug 2005
Posts
7,615
Location
Swindon
First off today I got home and I noticed HWMonitor my fan RPM seems to drop randomly, well according to the program anyway. I have checked them and none of them seem to stop.

When it said 0rpm I took the side of my case and checked as you do and the RPM went up again, it seems to do it on/off/on/off very odd.

Secondly I can hear a kind of whine/whistle noise that when I scroll through a website, open a new program anything that seems to keep the computer busy it momentarily stops.

Its hard to tell where the noise is coming from but it sounds like PSU area so I thought maybe the fan?

Its a brand new PSU as well which is a little odd.
 
Depending on design, some fans will run at a constant speed, and others can vary depending on the temperature sensors on the motherboard, if they are plugged into the motherboard. Also software reporting of fan speed is not always reliable.

A fan plugged directly into the psu will spin at a constant.

As for the second question, the whining noise, it sounds like interference. I used to get a similar issue with onboard audio at high volume, which I solved with a cheap sound card, but its worth doing a proper cable tidy, inside the pc and outside. Especially if you have external audio cables tangled up with mains power cables.

I would do some house keeping both inside the case, and outside, taking care to keep audio and power cables separate, and then see if you have an issue.
 
Im running a Corsair h50, one fan is on CPU header, other is connected to a 3 pin mobo connector (running a push/pull setup)

PWM is turned off and the average speed is pretty much equal.

The noise isn't constant like now it appears to have stopped.

Its definitely coming from the PSU im sure of it.

Its a corsair tx650

I have done a little bit of googling and it appears a few people seem to have had this issue with the x58 board (running gigabyte x58 ud3r) and some sort of feed back.

Its pretty quiet but I did happen to notice it.
 
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