Which fan (front-fan, top-radiator-fan ... or one of the other case-fans)?

Or, is it actually the fan(s) on the video card?

Are you still under Dell warranty contract ?

Hi @Yako666 ,

Reducing GPU Power worked for a while but eventually it wasn't enough and the problem came back.  It was inescapable in several games.

I used my Warranty to replace the GPU and I haven't had the problem since.  I attribute the issue to the Graphics Card having a higher degree of fallout than usual.  Working around the Graphics Card with program settings only goes so far based on everything I tried and eventually had to give in to going for a replacement.

My experience with getting the replacement was good, they sent someone out and they swapped it for me.  We booted it up and tested it a bit before he left to at least have confidence it worked, ran some benchmarks as well.

Hopefully that helps even if not the way you'd prefer.

Hello @KisaTheGamerCat 

Did you manage to resolve your issue? I have the same PC and still the  problem pursues(gpu fan reving up)

Only way I've manged to solve is to make a custom overclock in AWCC and lower gpu power to 85% and press the link slider to auto reduce the temp limit. 

Credit to @Xaldarus 

Believe it shaves 2/3 fps but definitely is worth the fps hit to not hear that jet engine gpu fan roar haha

I also had to use my warranty and send it in. They replaced 3 parts so obviously was faulty from the get go. Really regret buying the PC and not just building one.