Computer Case Fan Mount Advice Please

[luckystrikes]

Hello Community,

Currently I am getting a new case Corsair Vengeance C70.

I am getting Corsair AF/SP Fan series.

My first question is which one I should buy AF or SP?
Only difference they got is SP is the static rpm and AF has different RPM depends on sensor?

My current fan on the side(120mm) runs static which is connected to the 4 pin and doesn't seem like its speed is changing.

So my second question is what make the fans run on their own automatically depending on the temperature? Do i just need to buy AF series which has various RPM?
Or do i need to connect it to something else inside the case?

I am leaning towards of getting 2 x 140mm for my side fans.

Any advice would be appreciated.

This is my first time changing a PC case and never had expeirence with the fans config.

Thinking about doing this.
(2 x Front Fans + 2 Side Fans are for Intake and 2 x Top Fans + 1x Rear for Exhaust)

And

Can anyone suggest me a good fan controller? (have no idea but certainly interested in that too)

Thank you Thank you

 

[Karsten75]

AF - Airflow fans are good for case fans.
SP - Static Pressure fans are good for radiator mounts.