Strange sound when gaming coming from PSU

[KaveMan89]

Hello,
I recently upgraded my PC's GPU and PSU to a EVGA 680 and a Corsair 750W PSU

I noticed when gaming and gaming only a strange sound comes from the PSU, And when i pause the game/Tab out the sound stops. I put up a quick video here on youtube to show you what i mean http://www.youtube.com/watch?v=id-QdIu9SQY&feature=youtu.be

You can hear me pressing ESC to pause and the sound stopping, Other than this it's been great temps are fine, no crashes, nothing, it just gets a little annoying.

 

[groundrat]

I the strange sound the clicking or the harmonic?

If it’s the clicking, I’d change out the PS soon.

If it’s the harmonic, its due to another fan (probably a 140mm near the power supply?) spinning at a rate that causes the 135mm in the supply to vibrate. It’s called a harmonic, it isn’t harmful, per say.

Move any fans that are close to the power supply or get into the bios and disable the MB’s ability to automatically control the fans speed (not the power supplies fan) if it really bugs you.

 

[KaveMan89]

I the strange sound the clicking or the harmonic?

If it’s the clicking, I’d change out the PS soon.

If it’s the harmonic, its due to another fan (probably a 140mm near the power supply?) spinning at a rate that causes the 135mm in the supply to vibrate. It’s called a harmonic, it isn’t harmful, per say.

Move any fans that are close to the power supply or get into the bios and disable the MB’s ability to automatically control the fans speed (not the power supplies fan) if it really bugs you.

Sound seems to have stopped now, but thanks for the post