Yay! I got myself a really cheap PCI fan blower. $5 Woot Woot!! Its sucking out all the Hot air from the bottom of the case and hot air thats coming from the Video card and blowing it out . I recommend everyone who's air cooling to get one. It really works. Mine is dual slot but you can get single slot also. I have the antec. It has 3 settings in the back for low,med and high
The best blower though is the Thermaltake TMG SL1 Slot Cooler. It only has 16dBA. Its very hard to find it in stock cause it's so popular http://www.xoxide.com/thermaltake-tmg-sl1.html
It might work better if you could reverse the fan's flow - pulling cold air in from the back and the front, heating it up, and taking it out the back. Course, it'd work well in one of those fancy Li-Li's where the mobo's upside down.
nope... only if the air current is in that direction. Under convection with no other air flow hot air surounded by cooler air will rise cool then fall agian due to it's density been less than the surounding air and increasing as it cools. But If you have a huge fan suking it in, it's goign to go into the fan.