Just bought an 8700k myself and I find everyone using auto voltages is complaining about bad TIM or "my CPU runs to hot".
I tried it the good old way:
AUTO voltages and my aimed core speed-> look what the board uses and drop it
use lowered but fixed voltages -> try reducing it as much as possible
So now my CPU is on 48 all cores and not even touching 60°C after hours of gaming. After 1 hour P95 its around 65°C sometimes touching 70°C (22° ambient).
Proves for me: nothing has changed till 5 years ago, AUTO is always easy but more wearing on your hardware.
