gpu fan gets 2000 rpm in game

Well when playing a game, the GPU has a heck of a lot more work to do than browsing the web or watching a film (for instance). What game(s) are you playing and what's the GPU you're using?
 


I am playing mad max on very high and my gpu is gtx 970 but it didnt happend in the early after a few days it happened
 
It's fairly intensive to run that on very high, do you know how hot the core temp is running while playing? I'm not too sure what it was doing the first few days but I'd say now that it's trying to keep itself from overheating and damaging itself.
 

it is not over 70c
 
A program like MSI Afterburner will allow you to change the fan RPM and adjust the fan curve. While altering the fan speed, keep a check on how hot it gets under load. If it goes over 85C then change it back, thats my red-line temp