Noctua makes awesome computer fans. I have a Nf-f12 pushing air through my compressor fridge's condenser for nearly 4 years now.
I do not utilize the resistors provided with these fans to slow them down more.
The Silverstone fm121 and FM181 are my favorite adjustable speed fans
The AP182 is seriously powerful, but the hub gets too hot at top speed and with battery charging voltages. Mine failed after about 2 years. corrosion was in influencing factor as it resides in a window as an intake fan in a salty air environment. The replacement ( fm181) is not as strong at only 1300 rpm but only draws 0.27 amps for ~150 cfm and is very quiet at max or minimum rpm.
