Originally Posted by BBEG
Given the available information on 120mm and 140mm fans, Gentle Typhoons and Noiseblocker Multiframes still own both size categories in the pressure + noise + airflow department (important for fans obscured by filters as in Fractal cases). I donâ€™t doubt the TY-140s and Kama Flex's are good fans, just that Iâ€™d be awfully tempted to use some creativity and get a couple AP-14 or -15s in there for intakes instead for their greater ability to pull air through the filters in that case.
As an aside, why is it so exceptionally hard to get solid, objective information about fans? Manufacturers lie and exaggerate more often than not, and clearly there are a lot of different ways to measure airflow and sound for so many folks to come up with different results when measuring the same thing. I would think the computer parts industry would be excellently served by some universal standards in assessing cooling systems (like it already has for motherboard and drive bay dimensions, for example). Xbitlabs, GijiFlo, SPCR, @Review.net, even Tator Tot here all have similar, but notably different ways of measuring fan attributes that lead to some very â€˜broadâ€™ results.
Again, x-bit disagrees with you about the 140mm Noiseblocker fans (link
As for specs, you can more or less trust the specs of fans that are sold to industry: the customers can test the fans. So Adda, Delta, EBM Papst, Globe, Nidec, NMB-Mat, Panaflo, Sanyo Denki and a few others publish specs you can rely on. Of course, none of those manufacturers sell to consumers. As for brand sellers, they're about as trustworthy in their specs as other companies who sell to consumers - some more, some less.