I agree with blowing air against the heatsink. But as for the power supply fan drawing air in from the outside, that would in essence pressurize the case with very few places for the now warm air to escape. It would probably be a better idea to leave the power supply fan exhausting air from the inside of the case to the outside. And since most towers are designed with the power supply in the uppermost part of the case, it makes more sense for it to be an exhaust because thats where the warm air will pool.
If you were wanting to get better cooling, installing an additional fan at the bottom front of the case would be a good idea. (as long as there is somewhere on the front bezel or sides for fresh air to come in through.) You get the benefit of increasing the airflow across the components and helping move the air around in the case. The other benefit, for some people, if your machine is on or near the floor it will draw the cooler air from the ground through the case helping lower the temperature. just my .02 :) -nils On Mon, Oct 20, 2003 at 02:38:10PM -0700 or thereabouts, Clark Martin wrote: > As a rule you blow air on to components. Fan exhaust flow is more > determinate than intake flow. So the power supply fan should be > drawing air from outside and blowing into the computer. A processor > fan should blow air onto the processor. If you do the reverse the > air it draws in to the processor heatsink is flowing over other > components. Since the processor is usually the highest heat source > it needs the coolest air for cooling. > > Check to make sure your fans are really blowing air. When they fail > sometimes they still turn but at a fairly slow speed and they don't > move much air. > -- > Clark Martin > Redwood City, CA, USA > Macintosh / Internet Consulting -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
