- Rotational Speed (+/- 10%): 4500 RPM Rotational Speed with L.N.A. (+/- 10%): 3700 RPM Airflow: 8.2 m3/h Airflow with L.N.A.: 6.6 m3/h
- Acoustical Noise: 17.9 dB(A) Acoustical Noise with L.N.A.: 12.9 dB(A)
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Blissful Silence 04/24/2014
This review is from: Noctua A-Series NF-A4x10 FLX 40mm Blades with AAO Frame, SSO2 Bearing Premium Fan
Nearly inaudible running at 2300 RPM.. Better airflow than the fan it replaced @ one-fourth the RPMs.
This NF-A4x10 fan replaced the OEM ASUS USB fan for the X79 Sabertooth motherboard. The OEM 35mm fan was louder, by factors, than all of the other 5 Noctua case fans combined. Although the NF-A4x10 fan did not fit IN the OEM slot in the armor, it nested ABOVE it exactly. It tucked beneath the rear case fan nicely, and if I'd had a 1cm longer screw, it could have been secured in one hole. As it is, a little JB weld one either side sufficed for added, but unneeded security.
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