Basic air cooling question

[nsafreak]

Well this one is straight out of basic air cooling a case 101 and I'm pretty sure I know the answer already I just want some verification. I have an Antec 300 case with the following airflow:

2 Cooler Master blue LED fans on the front intake (approx 40 cfm apiece)
2 Cooler Master fans on the H212+ (push/pull)
2 Antec Trio fans on the exhaust (approx 80 cfm apiece if I'm looking at the correct specs, these are the ones that come with the case,one back & one top)

So if I remember my airflow math correctly I have a negative airflow of approx -80 cfm. Will I get better cooling results by moving to more of a neutral airflow by swapping out the two intake fans to two intake fans that have the same cfm as the exhaust? Specifically I'm thinking of going for a pair of these Antec Tricools (http://www.microcenter.com/single_product_results.phtml?product_id=0253110). Yeah I know basic question but at least it should be easy.

 

[SpeedTester]

What about the power supply, side door fan opening and air leakage. You would have to take all that into affect also.

 

[nsafreak]

What about the power supply, side door fan opening and air leakage. You would have to take all that into affect also.

This is true, although I'm not quite sure how to calculate the amount of air taken in/lost from leakage and the side air fan intake (not in use). I know that the PSU is exhausting air as well so I figure around another 30ish CFM of air that is being exhausted through the PSU which leads me to believe that I definitely have a negative pressure airflow going.

 

[Kenmitch]

I wouldn't think the CPU fans would count towards your airflow unless ducted to exterior of case.

 

[WoodButcher]

With that case I don't think it will matter at all. If i'm not mistaken there are vents all over that case making a pos or negative condition almost impossible. If all the fans were intake or exhaust would be the only way to affect that.

 

[nsafreak]

With that case I don't think it will matter at all. If i'm not mistaken there are vents all over that case making a pos or negative condition almost impossible. If all the fans were intake or exhaust would be the only way to affect that.

Nope, this case actually doesn't have a bunch of filter holes in it, come to think of it my previous case (a CM Centurion 5) had a good amount more in terms of air filter holes. On the Antec 300 there are the front intake fan holes, the top exhaust fan, the rear exhaust fan, and the side fan and where the PSU sits. Feeling around the seams on both doors I really don't feel any airflow at all so it seems to close fairly tight. I'm feeling some air flowing in to the case from the side air fan hole which I'm pretty sure is a fair indication that I have negative air pressure. I just picked up a pair of CM SickleFlow fans that can move 80cfm apiece. So once I get them installed I can probably do some adjustment using my fan controller and get a closer to positive pressure airflow. It's not that my temps are bad it's just that I've been a bit of a perfectionist with this build.