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You'll also find that the "front" of the blower, which is the hole without the motor supports on it, sucks in the majority of the air. Additionally, I've found that any cross flow (IE, air blown across the intakes) seems to hinder the blower's operation, probably because it's upsetting the airflow internally to the cage.
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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You're right there! Even if you place your finger near the intake you can hear it straining to draw air in. I think a flat fan draws air from a wide area, where as this type draws in along a narrow path directly from the front of the intake. This would explain why my cpu was hotter with it pointing at that hot NB chip. |
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The back of the fan, where the motor lives, appears to block a significant amount of airflow - IE, blocking the back doesn't really make much difference. That's a shame, as it means only half of the blower is actually doing something!
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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I am tempted to get some duct hose to attach to the intake and then straight out to the front of my case where the two lower external drive bays are. Similar to this kit which draws from the top (scroll to the bottom of the page): http://www.chill-tek.com/products/fan-grills.html |
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Give it a go and see how well it works! As long as there's good airflow through the duct, the blower should be ok with it. What would be better would be having the blower at the front of the case, blowing the air all the way to the heatsink. Like traditional fans, blowers work best blowing into a slight pressure increase, rather than sucking from an area of lower pressure. The blower should be able to provide enough pressure that the ducting won't make too much difference to the airflow.
__________________ Any views, thoughts and opinions are entirely my own. They don't necessarily represent those of my employer (BlackBerry). |
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