Coil Whine Issue

[ZainJ51]

So whenever I am playing games and the GPU's hit high on usage or like run a benchmark, my PSU makes like a coil whine noise.. not sure if its because it isn't good enough for Crossfire 280X (which I have) or whats the issue, the PSU is a Corsair CX750, when I am playing a game I can hear like a tiny sound of coil-whine not enough to annoy me but make me wonder.

[MountainDrew]

What are the other components in your system?

 

You're sure that it isn't the GPUs making the noise, since GPUs tend to whine when they are under high load (mine do at least).

[Vrbas]

Make sure it isn't the GPU.

[Lord_Karango17]

So whenever I am playing games and the GPU's hit high on usage or like run a benchmark, my PSU makes like a coil whine noise.. not sure if its because it isn't good enough for Crossfire 280X (which I have) or whats the issue, the PSU is a Corsair CX750, when I am playing a game I can hear like a tiny sound of coil-whine not enough to annoy me but make me wonder.

Are you sure it is the PSU and not the gpus? that psu should be more than enough...