I brought 4 of them. Plugging 2 of them on the same cable connected to my H80i fried the cooler. The pump died and the fan controller died. The same thing will happen if you plug them into a H100i so you cannot do push/pull on a Corsair AIO with these unless you power the fans from the PSU or the motherboard.
They are loud when past 1500RPM but 1200RPM is the sweet spot. Just a warning, if you have any mesh infront of one of these fans when set to intake it will be noisy unless it is set to under 1000RPM. On exaust it does not create this noise, only intake.
The best of all is that there is no PWM whine, tick, or hum. Just the sound of air moving. I was going to swap out all my Cougars for these but decided to swap them for Corsair SP Performance fans.