Airflow or pressure Question

[ismobruh]

Hey,

I'm building my pc right now and have a question regarding the airflow and the pressure.

My situation: I have a Corsair 4000D Airflow with 3 intake front fans and a 280mm radiator in the top and I'm planning on adding a 120mm exhaust fan in the back. 

Because of the two 140mm fans in the top and the 120mm in the back I will like have a negative pressure in the case and that would mean more dust will be sucked in, right?

Should I just give up the back exhaust fan?

Thanks in advance

 

 

 

[TylerDurden!]

2 minutes ago, ismobruh said:

right?

you usually can adjust the case fan speeds individually to get your system how you want it.

[matt0725]

Negative pressure does have a little more dust buildup, but I personally like having a fan right near the motherboard power delivery to make sure it gets some airflow from the fan