Consistent power supply for i7-8700k at 5.1 GHz
Consistent power supply for i7-8700k at 5.1 GHz
The variation can be quite significant with silicon lottery effects. Scaling around 0.04-0.06 per 100MHz for Coffee Lake is helpful. If you require 1.30 for stable 5GHz, you might achieve 5.1 at 1.34-1.36 unless you're hitting your CPU limits and need larger jumps.
It requires just a touch of power for 4.8/4.9Ghz, let alone 5.1?
Test at 5GHz with 1.35V if steady, otherwise try 5.1V and reduce by 0.01V until stable