Question Wierd sounds after installing new GPU

MPDota

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Feb 1, 2016
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So i installed new (second hand) GTX 1080Ti in my system and since then i get wierd cracking/electric/fuzzing noises in game when something is loud and outside of the game when i change fan curve. GPU in question is EVGA SC 1080ti ...
I put my GPU on 80% power to reduce temps since i don't need high clocks, but strangely when i put it back on 100% weird sounds seem to disappear in game... Still when i change fan curve in Precision X1 software i get that cracking electric sound... in game and even watching YT....
Any idea what this might be? I don't wanna fry my MB (Formula XI) or something.
Thanks.
 

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