I would put the fans in PWM mode in the bios, linked to the CPU temp. Then adjust curves as you see fit. For example, my case fans are something along the lines of CPU=<40c Fans=20% CPU=55c Fans=35% ...
Today Leo presents a little system build he put together for be quiet! using their latest Light Wings fans. 00:00 light wings ...
Got the new build together [yay!] but having on minor issue. Fans. So the Torrent has a fan controller with it, nothing fancy. I have the 5 case fans on the controller. My Noctua NH-15S cooler fan ...