Summary: Maybe I got a bad one, not sure. Fan was extremely loud and shrill. Lasted 9 days before going out with pretty light use, it came loose from the assembly, hit the processor and broke the fan blades.
Pros: Nice fan, do not know the CFM but using on a AMD Bull Dozer3.6 overclocked to 3.8 and it works fine, as long as the house is below 77 degrees, then some times will over heat. This is a fan for a CPU, not a case fan.
Cons: None, working over 2 months now, is very quiet.