Intel have patented a system by which their chips could self moderate when overclocked, counteracting the mods by slowing their own clock speed. This is supposedly to protect consumers from unscrupoulous resellers who overclock and then sell on chips at their new, false, speeds, but it sounds more like planned obsolescence to me- if you want a faster chip you will have to buy it, we’re not letting you get empowered and less dependent on us.