In our testing, the Scythe branded fans were one of the few brands that were very accurate to the specifications they printed on the box.
Many of the typical fans you would see for sale were not. I can tell you this, though. If the specifications on a fan sound too good to be true? They are.
The most common exaggerations were increased airflow (in some cases by huge numbers - one fan claimed like 70 CFM and in our tests barely hit 45 CFM) and lower noise levels (claiming ridiculous things like 8 dBA or something - realistically performing around 22-23 dBA). These were not no-name fans - most were from major brands.
One thing that can't be printed easily is the pitch of the noise - the frequency. 22 dBA isn't the same at different frequencies, some are way more annoying than others. One of the brands that has "custom blades" that have been shaped differently to produce lower noise levels managed to have a very good noise to CFM ratio - but the noise it produced was so high-pitched it was obnoxious. So it felt louder than fans that were technically louder.
Very interesting. I'd like to see how these perform on a radiator. Static pressure is important!