Fan placement and intake/exhaust

[NotSoSavvyTechGuy]

Ok so this is one is going to be fun because of the overall conflicting opinions. So my question is about fan intake/Exhaust and placement. I have 4 fan 3 of which were pre-installed all 120mm front intake, back and top exhaust. For the side fan I bought one and and put it in as an intake with a filter. It sits on the lower side mostly below the gpu maybe a little next. Now I just wanted to get an idea if that was right choice. I was also wondering if I should swap the one I bought, which I think is stronger than the stock fans and if so which one

 

[Zedjulz316]

Seems like a fine choice for the fan near the gpu, but i would have the rear in intake to create +pressure. This one is ideal as it is elevated from the ground dust and does not represent a flat surface on which it can fall on.

 

[Zedjulz316]

And there is no need to swap, the one you bought works alone to bring aire to the gpu, as such it is good for it to be the "strongest"