Quote: Originally Posted by
rdholtz 
But I'd be surprised if your CPU and GPU fans are blowing down. My experience is that these blow up, drawing ambient air through the fins and blowing it away from the processors.
99% of heatsink fans blow down. Trust me on this.
Adding a single fan of the
same size to create airflow through the case should be all you need. You might consider going to a larger fan, rather than more fans. If it were my system, I'd make sure they are ball bearing fans too. Less noise and they will last longer.