Many of the miners can be overclocked, but the power potential directly depends on the features of production and technological properties of the chip.
For example, you can disperse Antminer chips by 10-30 percent from the initial parameters set by the manufacturer, but the chips produced by KnC give a two-fold acceleration.
It is necessary to be careful when dispersing, as the level of energy costs will increase with the increase in the frequency index.
Not all devices survive overclocking and, as a result, you will lose not only the miner, but also risk damaging other equipment of the system.
Sometimes the manufacturer intentionally understates the working frequency of the chip in order to achieve its maximum stability. By overclocking such chips, the user can achieve the desired performance, but the stability indicator drops significantly.