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Breaking the rules...

A

antipody

Member
😀
Anyone think this is a bad idea?

I have decided to encourage airflow in my case from top to bottom (ie against natural convective flow). The reason is that my KK266 mobo puts the CPU right up top next to the power supply. You'd think this would be perfect as I should be able to just jetisson this hot CPU air straight out of the back case vent next to it. However, when there is no fan on this top vent and even when the bottom front vent is set to intake, the power of my cpu fan results in the sucking in of a significant amount of air in thru the top vent (I have two 80mm blowing down on my Zalman--in excess of 70cfm). Thus, I figure by putting an exhaust on the top vent, I'd just be "fighting" with my CPU fans. Better to exhaust out the bottom of my case, I say. Natural convection is not as strong as the forced convection I'd be fighting against.

Ideally, I'd put a blowhole in the top of the case, but I haven't got the tools for that right now.

I'll have a play with different fan configs and see what happens. But was just wondering if anyone else has this problem before I start.
 
Try it and see. Keep good track of temps at full load for all the different fan placements. I tried something similar and it was a total bust, increased temps several degrees.
 
yeah, you could just set it up, check ur temps under load and idle. then flip the fans and check the temps again
 
Im going to test something like this when i get my MB back. Just make sure you force more air in than your pulling out or you will end up with a big ole ball of dusties
 
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