That link is about the relationship between the CPU and peak voltage...which very few people posting in this thread seem to have any knowledge of whatsoever.
It's an article for overclocking ....... for a desktop system, running a PSU ..... yes a CPU has a peak voltage... And one would be daft not to use a very good quality PSU for overclocking . This is just going to backfire on you cause going down that analogy apple used a poor PSU , and had to run the CPU under clocked. The lesson here, choose the right PSU for the system
I've spent years overclocking , don't mix OC with a system that fails to run at default settings. A system that fails to run at default setting is flawed , find the component causing the issue and replace it, do not under clock your system , that is daft.... why waste money on a CPU that cannot run at its rated speed