To Stack or Not to Stack

[spdracer22]

Would it be benificial to stack case fans in order to increase the case pressure (stacking the intake fans) or decrease the case pressure (stacking the outake fans)? The added fans won't increase airflow, but they will change the case pressure. To keep the case clean, as I understand it, stacked intake fans would be more benificial, but to increase cooling, stacked intake fans should more benificial. If I'm wrong, please correct me, and feel free to comment. ~Thanks

~:spdracer22:~

[spdracer22]

Stacking intake fans would increase case pressure.
Stacking outtake fans would decrease case pressure.

~:spdracer22:~