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Performance and overclocking
At stock clocks the Core i7-8700K receives 1.16V and runs at 4.3GHz on all cores. We used the preset profile in the UEFI to overclock to 5.0GHz and that simply changed the multiplier to 50x and increased to a nominal 1.4V (1.38V actual).
Gigabyte is keen to point out the extra power phases in the Gaming 7 make this possible and you will not necessarily see the same clock speeds from the same CPU on lesser motherboards such as the Gaming 5 or Ultra Gaming.
Naturally we could have manually overclocked the Core i7-8700K and aimed for something higher than 5.0GHz but there was no point as the CPU temperature was sitting at 89 degrees and our screen grab from HW Monitor shows maximum temperatures in the mid-90s.
This very likely means you would want to consider running your CPU slightly slower to help its longevity at, say, 4.9GHz.
Would the CPU overclock run at a lower voltage?
it depends on CPU, not mobo…
Not only the cpu…the amount of power (watt) the VRM can handle is an issue when overclocking. If the VRM is poor/bad the temprature will go thru the roof and hit way above 100C degrees and make for less overclocking. This board has been testet with liquid nitrogen and it’s a very good overclocker compared to others in the same price range.