Best fans setup

[sszaki]

I'm thinking about my fan setup in my fractal r4
I have 6 140 fans running in setup like that:

But I also seen that configuration:

And that one:

Witch is best?

 

[Zerk2012]

Don't overthink it their basic fan rules.
Front, bottom, side, Intake.
Top, rear, Exhaust.
On a Side not your probably using 3 more fans than you need.

 

[greens]

I'm thinking about my fan setup in my fractal r4
I have 6 140 fans running in setup like that:

But I also seen that configuration:

And that one:

Witch is best?

I like the first one the most.

you can also add a second fan to the top to give you a bit more pressure balance.