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Higher CFM = Better Cooling?

post #1 of 7
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Higher CFM = Better Cooling = More Noise though?
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post #2 of 7
most of the time
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post #3 of 7
Yes, with the same size fan. Larger fans can move more air with less noise.
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post #4 of 7
Depends on the application. Higher static pressure more suited to CPU coolers or radiators with dense fins.

For cases fans higher CFM is better and as already said a larger slower rotating fans will have good CFM at a lower noise level (as a rule).

My personal experience is that sleave bearing fans seem to get a lot noisier with age plus seem less reliable.
post #5 of 7
Very General but more or less yea.

YOu have to consider Dead spots, Blade design, Static pressure, RPM to see how well your fans will cool / how loud they will be.


Usually the bigger the fan the more air it will push with less power and less noise.
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post #6 of 7
more cfm= better case fan. more cfm+static pressure=better heat sink fan.
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post #7 of 7
Quote:
Originally Posted by pyro_dude;13519621 
more cfm= better case fan. more cfm+static pressure=better heat sink fan.

Pretty much yes -Too manny look at just cfms-but you need the static pressure to force its way through most good cooler and rads, but in a push pull-i did notice on one of my rigs-i got just a bit better temps-only 1c useing a fan that just blows a lot of air as my pull fan. And dont discount static pressure as case fans either, if it is blowing toward something like say your ram-static pressure will be a plus.
    
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