So in my video about installing a video card I mentioned that if my PC was dirty inside I would clean it out. The computer inside was actually very clean for the most part. Which surprised me as I have multiple fans. The case I have is from Antec and it has a big exhaust fan on the top of it, a smaller one on the side and one on the back. It also has an intake fan on the front.
So with all that airflow I’d expect it to be filled with dirt every few months. I’ve never has to clean it out. But then I remembered that the case is designed specifically to keep the insides clean. It has an air filter up front that I have forgotten about…for about five years!