(Higher is better)
We first tweaked the CPU multiplier ratio and raised the voltage accordingly. After ascertaining that the achieved clock speed was stable, we then proceeded to increase the BCLK value to get smaller overclock increments. This also enabled us to take advantage of the new overclocking capabilities of Skylake CPUs, which allow a wider range of BCLK values. Changing the BCLK values also overclocks the RAM, so we throttled the speed accordingly to maintain system stability.
The ASUS motherboard was the most capable overclocker here, and we managed to hit a top speed of 4.83GHz, which translated to around a 17% improvement over default speeds. The ASRock and MSI motherboard also performed decently, coming in second and third, respectively.
Unfortunately, the Gigabyte motherboard didn’t live up to its whopping 22-phase power design at all, managing a top overclock of just 4.66GHz from our trials.