hi guys... new CM USP100 owner here...

I got one question regarding the optimum airflow... atm, I have default 1 stock front intake fan, 1 90CFM 120mm CM bottom intake, 1 90CFM 120mm CM side intake and 1 stock exhaust at rear...

I know this is as per suggested by CM, but I wonder if anybody has any experience having the side panel fan as exhaust. 1st, I'm using MSI graphic card with MSI Cyclone II HSF. so, under my current config, I'm pretty sure that the graphic card is getting the fresh air from bottom intake and side intake. however, I wonder if it is actually wiser to exhaust the air out immediately rather than blowing more air inside with side panel fan.

another thing is, which one is better? -ve pressure (more exhaust than intake) or +ve pressure (more intake than exhaust)? I'm planning to replace all stocks fan (front intake and rear exhaust) and add another one side panel (i'm using transparent panel, so can fit 2 side panel fans) with another 90CFM fan... is it a wise thing to do??? or should I settle with lower CFM for front intake???

thanks for the reply... hmmm, so it's better to stick with the suggested config by CM then...

looking for answer on -ve pressure and +ve pressure next...