i dont think the intake fan on hdd is sufficient enough..... and im quite afraid to make the side fans to be intake since my room is not airconditioned yet (just moved to a new place), and its quite poluted here... hahhaha
should i have an internal fan instead without sucking air from the outside ?
I read a PC cooling study a month ago and for the life of me can not find it again. Some dude, or dudette, put temp sensors all over their case and monitored built in sensors with an array of fans. I believe they came to the conclusion that the most efficient setup was an exhaust fan, top blowhole, and intake. Although a single exhaust fan only trailed the addition of a blow hold and intake by very little. So basically it all has to do with proper circulation. The intake fan is ok but in my opinion mainly for cooling your hard drive. the top exhaust fan should create enough negative pressure in your case to pull air in from outside. My opinion is that your setup is fine. however if the side fan is low on the case it should be blowing in and if it is at the top it should be blowing out. Reason being hot air rises and you want to exhaust that air pulling cool air in below. If it's low you do not want to be blowing out cool air but rather pulling it in.
Plus if the side fan is low it could be feeding your vid card cool air by blowing in.
well, the side fan is at the middle, so, the vid card is in the lower part... while the back exhaust fan is also around the middle.....
so technically, nothing blows to the mobo...
i might do what mpicl said, about the pci slot cover, this weekend.
If the side fan is even with the mobo I say exhaust it. Otherwise you are't really circulating air effiently as you will be pushing air and directly out the back again with exhaust. Where as if your exhausting it the air it is exhausting it warm/hot air that has already circulated over components.