Enermax - TB Silence UCTB12 - Fan In the testing, I thought it was idling, so he was silent, BUT NO! This fan 12 cm, 12 volts 2 times more blades than conventional fans, and it is mounted on ball bearings 'Twister' makes it very effective in discreetly. Moreover, it is very economical (0.18 watts in my personal test) In short, a record, and, you guessed it, I recommend :)