Over time, this build up will start to line the areas where air is designed to naturally flow through your machine. This air flow in most systems is controller by a fan that will draw in cool room temperature air and pull it across a heat sink that is passively dissipating heat and in turn will wick the temperature down. As these main arteries start to close up from debris, your machines start to run harder and hotter to achieve the same level of performance they were delivering prior. Imagine doing an exercise routine with a straw in your mouth…. not a fun time.
Heat is generated mainly from your main processing units and on them, it is normal to find a white or grey gooey paste that helps conduct the heat to a heatsink above. Thermal paste as its normally referred is critical for maintaining normal operating temperatures. Over the years, it is natural for a reduction in the heat conducting capacity of this paste through the drying and hardening of this paste. Through our years of working on machines, we’ve found many machines that from factory have very little or almost no thermal paste on their processors. We encourage regular servicing of your electronics to maintain for years past their normal expiry date!