It is inevitable that the dust gets into the PC, even if we have filtering cables. These particles and their gaps are everywhere, and as long as there is a fan on the equipment, we will be causing, in a way, the final dust to be deposited on our furniture.
The powder is finally solidified in the form of soot
When the dust accumulates a lot, it solidifies in the form of soot, and on the PC the process is also accelerated due to the heat produced by the elements (through which movement to heap up dust On the PC it looks darker over time, instead of gray as it did earlier). When the powder hardens, it specializes in covering the grilles in which you enter the air, connecting it and protecting the fresh air by penetrating it. For this reason, air flow will be blocked as well it will cause the temperature to rise
Dust filters are designed for air intake brakes, and are usually easily installed and removed so that we can clean them regularly. However, even filtering the smallest particles of dust eventually enters and deposits in our hardware, so eventually the interior will be exposed to dust. Filters take a lot of work, of course, but they don't make our PC vulnerable to dust.
In the picture above you can see the extreme case, probably from someone who has never cleaned the inside of his PC, where the dust has created a clear and invisible layer. Obviously the air flow of these machines is completely destroyed and the elements will be supporting more heat than they should have been in normal conditions. This is logical shortens the life of the compound, and can cause failure.
It makes the machines more comfortable
Dust is also deposited on the fan fans. This causes the spots to become uneven and have more weight (albeit less), of course the engine should operate at a rate not designed for it
This also allows us to return to the combustion stage, because fans in heatsinks or radiators are at increased risk of dust exposure. They will form a solid layer inside the windproof installation of grapes or between twins, making the air less passive, making a lot of noise (because the air will go from where it shouldn't) and not cooling the heatsink or radiator at all, causing the processor to drain and not damage.
It can produce short circles
Unfortunately, the smoke that forms the powder is mixed with heat is an electric conductor
Obviously all of these things are in critical condition, where you don't care about the PC, and there will be people who will tell you that they have never cleaned up your PC and it still works (yes, but under what conditions are noisy, temperature and clean?).
Leaving aside that it is okay to clean the PC from time to time even if it is only for personal hygiene, we also need to do it to maintain the temperature, sound and integrity of our hardware. It doesn't mean you have to clean your PC every week, but a Cleanse more once every three months was not harmed a deep cleaning once a year.