My 4770k @ 4,5 GHz reaches 55-60C depending on the game, which is a perfectly safe operating temperature, and a more than a good result for fans at 750 RPM.
And my GTX 1070 @ +125/+500 maxes out at 59C with an Arctic Accelero Extreme 4 fixed at 35% Fan Speed.
AC4 is a superb cooler.
But when you have super tall memory and a big-ass CPU-cooler, setting up 4-slot GPU-cooler is a pain (in the ??? 😀 😀)