I'm building a rig with a ASUS ROG STRIX Z370-H GAMING and i7 8700k with 850W Power Supply and Air Cooling. I was a bit concerned about stability. So the turbo freq is in addition to the Intel Boost stepping tech? It increases your base clock by 400mhz?? To be on the safe side, I'm thinking of turning it off because the CPU is plenty fast enough for present day games. Maybe in the future, I will turn it on to get a little extra time before build new rig again.