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(10-29-2010, 12:33 PM)xbluexfoxx link Wrote: Well case fans should always be setup to make a vacuum effect in your case, ex: Front panel case be outer flow and back fans be intake. Side panel or case door fans should always be an intake setup. (aka blows air into your case.) As for energy efficient, well really it doesn't matter too much, as long as you have enough to supply it.
You dont need a vacuum effect...you need flow. Vacuum would mean all the air gets sucked out which would create a very low flow and no constant cool air intake. As for efficiency, it means having enough Flow to keep the processor within certain temperature limits, overdimensioning on flow means you will use too much energy and noise. Infact, having too much fans is Bad for your computer since it will suck in excessive air and therefore have a faster dust buildup which creates an isolating layer around your pc parts. Since heat diffusion is passive it is way more inefficient than convective systems.