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what does a shroud do?

post #1 of 7
Thread Starter 
I know it my sound like a dumb question but, what does a shroud do other than convert from one size fan to another?
I was told that I should put a shroud between my fan (pulling) and my heatsink for better performance. What exactly would this shroud accomplish??
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post #2 of 7
remove dead spot..

fans like GT-AP15 have very big dead spot, so when you install a shroud. The air pass the mid point of cooler/radiator too.

I think you might want to install it on your "push" fan (the fan pushing the air into your cooler/radiator)
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post #3 of 7
Reduce the amount of dead spots between the fan and the rad/heatsink, like the one on the center (where the fan engine is), by giving more room to allow air flow more so it can get more heat out.
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post #4 of 7
removes dead spots and the best space for shrouds i heard is 30MM
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post #5 of 7
Thread Starter 
ok, so by the fan being further it would be able to push or pull air on more surface area right?
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post #6 of 7
somewhat but its mainly because you know the middle of the fan and the three connecting arms basically block air from hitting your rad. and plus a fan is round so it misses the outside since its too close

basically something like this.

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post #7 of 7
Direct the air more efficiently. Same affect as removing the side from your case, kills the cooling affect of airflow.
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