Originally posted by: The111
No offense guys, but some of the things you are saying go against very basic fluid dynamics (I have a BS in Aerospace Engineering). I do appreciate all the discussion though since I started this thread, I'm learning about a lot of different fan options here. I ordered one of the "90cfm 19db" CM's, and I also ordered a High and Medium Yates... when I get all 3 I will make a totally subjective non-analytical comparison of airflow and noise.
Originally posted by: RallyMaster
I believe that is due to increased air pressure and not the concept of increased air flow.
You can't have one without the other. The pressure you are referring to is called dynamic pressure, and you can't increase that without increasing the airflow. I read so many posts where people acts as if they are independent, i.e. "great pressure but a slow airflow" or vice versa. It makes no sense.
Originally posted by: theAnimalHe's talking about static pressure, which is the ability of a fan to move air when there is an obstacle such as a grill or heatsink in the way.
That's not what static pressure is, and what you describe doesn't really make sense anyway. A fan pushes air from point A to point B. A grill in between those points is going to slow the air down no matter what fan made the original push. No fan imparts magical "grill avoidance abilities" to the air that it pushes.