i5 4690k Overclock
i5 4690k Overclock
It's a bit too high for a 4.2GHz OC on that devils canyon CPU. I recommend looking into OC options for that specific chip. Asus ROG forums offer useful guidance; the terminology may vary, but the principles remain similar, particularly regarding ring voltages, LLC, short/long durations, and c-states.
4.2GHz is within reach, though it depends on the chip selection. Are your BIOS settings still set to "Auto" for voltage, or have you adjusted them yourself?