&gt; What happens when this microcode patch is applied at runtime on an overclocked CPU?<p>Paradox :)<p>Probably it&#x27;ll reset conveniently so that you can restore default BIOS settings.<p>They can&#x27;t let it run because that wouldn&#x27;t change anything and I&#x27;m not sure if the microcode has a way to reliably switch some off-chip clock generator back to 100MHz.