Noise - apparently depends how fast you run it as the speed is variable.
However click here says
"The idea behind the radial fan should work O.K. however looking at this cooler shows how it doesn't work, making an astonishing 42.6 dBA and 22.1CFM indicate a loud yet poor, and weak fan."
"You like noise? this is your cooler !, the radial fan makes a tremendous amount of noise while it's spinning at it's highest RPM,..."