Is the Mobo the problem

[kmaster4]

ok so ive been have coil whine out of every Graphics card i get ive had 3 760s in the past 2 weeks because i keep getting bad coil whine. so i stuck my old 7770 it has coil whine too so i went out and bought a different PSU and still got the coil whine. I tried the cards in two separate PCI-e slots with the same out come. I use an msi z87-g45 Mobo. can some one please tell me if its is possible for the Power caps for the PCI-e slots are Whining i though it might have been a ground problem so i went and tightened all the screws, i found they were loose but no change. is it just me getting bad cards or is it something else.

 

[closest_num_2_0]

try to un plug any headphones i got a werid noise before and they were my turtle beaches never using those again. all fans have coil whine some more than others so try finding which one and use some bearing oil