Quote: Originally Posted by ignatzatsonic
The normal setup is to have a fan on the back, pulling air out--exhaust. And possibly a fan on the front, sucking air in---intake.
Quote: Originally Posted by linnemeyerhere
First off open your case and blow out all dust and clean the fan blades and fins on all fans. *
The manufacturers do pay close attention to air flow and I suspect what you have is dirt/dust build up or just a bad temp reading as 68-70c is crazy hot.
A second fan for the Intake>Exhaust will aid in cooling, but if you've got dust accumulated, particularly on the CPU heastsink fan - cleaning this will have an immediate effect on temps.
*NB Don't remove the heatsink unless you have some replacement thermal paste.
It's generally not a good idea to remove and re-attach CPU coolers without replacing the TIM paste because of the chance of introducing containments, or 'air bubbles' etc upon re-attachment which will limit the HSF effectiveness.