Is it advisable to buy this fan on my cooler master case? I did some researching on the net. I found out that adding a case fan would just let you accumulate more dust on your pc. Is this true? Is it really recommended to buy that fan. I don't want to buy this fan and just let dust build on my mobo.
Well, obviously more dust will come in, but, the increased airflow will aid in cooling more of your components. Mainly the northbridge, if your motherboard has one, will be most affected by adding a side fan. Then come the CPU and graphics card.
A nice filter certainly wouldn't hurt and would minimize the amount of dust that gets into the case. You'll still have to clean the filter though. Ideally you would want to place the filter on the outside of the case to facilitate easy cleaning and save the steps of having to take the side panel off to clean it and the fan.