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post #11 of 13
I think that the best setup would be the bottom 2 fans intake the top 2 exhaust. Smiplistic is always best hot air rises cool air is on bottom. I would put the 80mm back in the front I think it still will help get some fresh air in.

One thing to keep in mind tho if your going to be putting your pc in a desk or any thing that is going to close off the area around it its pointless to have the back fans intake and exhaust becase if its inclosed the hot air is just going to build up in there and u start pulling in the hot air again. I had to work around this with my desk the the part where you put the pc is inclosed completly but for the front so with that type setup I would just be pulling in the exhaust again.

That being said no matter what with there being air current at the back your still going to get little bit of the exhaust back in no matter what it would seem to me.
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Merlin's Madness
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post #12 of 13
a bottom fan will just bring dust in and mix up air flow
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ub3r system
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post #13 of 13
A lesson in basic thermo-physics.

Heat moves up.
Heat, like other forms of entropic energy, expands proportional to available space in -all- directions.
Heat, like other forms of energy, will travel the path of least resistance.

A few things to keep in mind from this.

As stated, you want to move the excited particles (heat) up and out. The reason heat moves up is because "up" is merely a space with generally less pressure than down, and excited particles tend toward lower pressure zones.

Now, this would take an experiment, but I theorize this. You actually want more intake than exaust. Why? You would be encouraging heat's natural propensity to move to lower pressure zones, out of your computer. more exaust, and your computer becomes a low pressure zone, and I would assume the heat would remain there. If anyone has experience in this, feel free to point out my error, I'm doing this merely by theory.

The windtunnel effect. Keeping all other things in mind, you must consider. Heat travels most effectively to the path of least resistance, i.e. from whatever is next to the particle into the particle. Thus, you want the airflow, fresh unenergized particles, passing through any heat sinks you have with the greatest possible flux. This can be assisted by I would assume acrylic/any other substance. airflow does no good if only a fraction of it actually passes past the sink. As such, you also don't want air "pockets." If you are really obsessed about cooling, get anything that generates fog, aka fog machine/dry ice, and allow it to move through the machine. You may notice eddy currents in places where the air merely rotates in place, caught. If this is near a chip it may cause a vicious cycle of heating, rendering any cooling innefectual.

That's my 2 cents... more like 2 dollars... I hope it's helpful.
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