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...... Overall, AMD even states that having a front intake is not necessary, and it can even circulate hot air instead of bringing cool air inside. >>
Not meaning to argue but real world experience has shown that air intake helps in cooling.
As far as I can see this thread is misunderstood.
Positive or negative is in my experience a theoretical value applied to PC case cooling when a unknown vaule can not be determined.
It is just a simple way to arrive at 'good' airflow.
Trust me.....I have tried to calculate airflow. It just ain't easy considering the characteristics of an enclosure.
XZeroII,
It has already been said and is good advice...Thanks to Sundog
Establish the needed airflow and go from there.
Hereis some good info on calculating airflow, pressure, and noise.
Brent