Some systems have poor cooling mechanisms and so may overheat under heavy CPU load. One common attempt to work around this is to limit the maximum speed of the processor in order to reduce its heat output. However, this prevents the processor from running at full speed even when it's not in danger of overheating. This will result in it taking longer for the CPU to enter idle states, ironically resulting in it becoming hotter than neccesary and consuming more energy.
Summary: If users need to perform thermal management of their systems, write an application that monitors the temperature and limits the CPU speed appropriately. Don't attempt to perform thermal management by using power management functionality to statically limit the processor frequency.
[^] # Re: étrange, aucun bureau ne plais!
Posté par liberforce (site web personnel, Mastodon) . En réponse au journal Cette semaine, j'ai squeezé un pangolin. Évalué à 3.
Bien répondu mais la lutte avec Mathew Garett est souvent inégale ;-)
Extrait de: http://www.codon.org.uk/~mjg59/power/good_practices.html