Which fan?

[rzandrew]

Have 2 heatsink fans,

One has,

2000 rpm and 34.64CFM and 85x87.2x31.6mm

the other has,

2500 +/- 10% rpm and 32.4CFM and 80x80x25 mm


So i would have thought the one with bigger CFM although there's not much in it, but maybe the one with faster rpm?

 

[dallasjoh]

Post your computers spec's.

 

[outlw6669]

As they both blow about the same, install the one which is quieter.
Also, depending on the design, the lower RPM fan very well could out blow the higher one.