Thought my Arctic cooler A/c 12 was good. Wow !!! This thing kills it. Silenx 120 mm fan 14DBA 72cfm. Ac /12 is a awesome fan but this fan was so quiet I had to check to see if it was running right. The only complaint I have is it is giving off a terrible paint smell hope that wears off soon. It lowered my cpu temps by 3 degrees and my case temp by 8 degrees.