I have my R5 1600 at 3.8GHz with 1.3125V, my case is the Corsair 400C and my cpu cooler is the Arctic Freezer 33.
There are 2 Arctic F12's (PWM) on the cpu cooler, and 6 more on the case (3 front intake, 2 top exhaust, 1 rear exhaust).
The chassis fans are connected to a Deepcool FH-10 fan hub...