Noctua NF-A4x10 FLX - case fan - 40 mm, NF-A4X10 FLX (Personal Computers)
Is serving in the best way. Although is very very small but bring enough power for a shallow breath of air. That's enough in my case, for cooling of power boards in an Alienware X51 R2. Most, however, I was impressed by the noise. Even if the fan ext