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StueyBaby17

Limp Gawd
Joined
Feb 7, 2003
Messages
293
A Heat Sink Fan should pull the warm air off of the CPU right? I'm not the smartest person with computers but in my understanding and with all the computer i have built that is what i did and it was fine. . .

A computer i built for my aunt, i bought a thermaltake volcano 7 and the heatsink fan was alread on it, and it was facing to push air onto the cpu, which i thought was wrong. I was gonna change it, but then i thought "wait i'm not that smart with computers, maybe i've been doing it wrong with all the other 5 computers that i built." So i thought i'd ask.
 
I'm pretty sure that it's better when the air is being blown on it....it is for me.
 
You're not necessarily wrong when you've got the fan set to suck, instead of blow.

The name of the game with heatsinks and fans is turbulence. Heat transfer works much better when the air moving across the heated surface (the fin of the heatsink) is turbulent, rather than laminar. Best way to get turbulent air is to make it go faster across the surface (higher Reynolds number)...or make the surface rougher.

So long as you've got turbulent flow conditions across those fins, it doesn't really matter all that much whether the fan sucks or blows air.

My fan is oriented so that it blows the air onto the heatsink...
 
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