Excellent performance at low volume

I bought two of these fans to replace the very loud original fan of Corsair h100i so. In terms of performance, the piranhas are similar to Corsair fan: with 79.13 CFM (about 134 m³ / h) promotes the Akasa fan minimally more air than the original fan with 77 CFM (about 131 m³ / h) but builds with 3.04 mm-H2O lower by 25% than the static pressure at Corsair with 4 mm-H2O. Sounds like a lot, but in practice (ie in my system) makes this difference is not really noticeable. There is a significant difference but in the speeds and in the volume.

The Corsair fans were at the lowest speed, ie 800 1 / min, an audible and all other components drowned in idle, even my former 6970/6950 Crossfire team, which was also due to the bearing noise of the fan. The system I would still just as described on the border as quietly. At high rpm it was over with ,, quiet '', to say nothing of the maximum speed of 2700 1 / min. Corsair indicates a noise level of 37.68 dBA, which is a very realistic value and the volume describes well. Although it has never come during normal operation for maximum speed, but only to 2000 revolutions with load (games, benchmarks, etc., but is a matter of settings), the CPU cooler has ever drowned with his loud fans the graphics cards and other components ,

Is quite different with the fans of Akasa, loud enough noise packaging from 6.4 to 27.2 dBA. The values ​​seem to me slightly unrealistic, but I can say with certainty that at 600 revolutions the two fans are inaudible and even the power supply (Seasonic P-660 in the active mode) be drowned out, being warmer, the CPU more than 2 ° C, than the Corsair fan at minimum speed. Recognizable they are only as from 1000 1 / min, at 1500 1 / min are heard and at the maximum speed of 1900 1 / min are just clearly perceptible, which is still not loud and much quieter than the very loud Corsair- fan. Although the latter may be very powerful, at the maximum speed of the temperature difference is hardly significant.

Thus, the volume for money at the Akasa Piranha is very high and many times higher compared to the Corsair fans. Due to the high static pressure at a low volume, I can recommend the fans for radiators definitely full. If you want to use it only as a case fan, where it depends only on the air flow rate and there are fans, carrying more air at lower volume, there are probably better choices, but it also is nothing wrong.