Two very strange problems.

[FeFiDoh]

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.

 

[FeFiDoh]

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.