5x be quiet! Pure Wings 2 120mm PWM Performance fans 20.2 dB(A)
 
Pure Wings 2 120mm PWM fans bring famous be quiet! silent cooling to entry-level computing, yet are also appropriate for gaming and multimedia systems.

Nine airflow-optimized fan blades reduce noise-generating turbulence
Long life rifle-bearing gives an operating lifetime of 80,000 hours
Even at maximum speed, operates at only 20.2 dB(A)
PWM controlled fan speed through the motherboard
German product conception, design and quality control
3-years manufacturer’s warranty
Pure Wings 2 120mm PWM fans offer outstanding reliability and quiet operation at a great price-for-performance ratio. They are the ultimate reason to put well-known be quiet! silent cooling in your PC.
5x Noctua NF-A12x25 120mm Ultra Silent fans 12.1dB(A)
 
The NF-A12x25 is a highly optimised next-generation 120mm fan that integrates Noctua’s latest innovations in aerodynamic engineering in order to achieve an unprecedented level of quiet cooling performance.

Size 120x120x25 mm
Mounting hole spacing 105x105 mm
Connector & pin-configuration 3-pin
Cable length 20cm + 30cm NA-EC1 extension cable
Bearing SSO2
Blade geometry A-Series with Flow Acceleration Channels
Frame technology AAO (Advanced Acoustic Optimisation)
Rotational speed (+/- 10%) 1200 RPM
Rotational Speed with U.L.N.A. (+/- 10%) 900 RPM
Acoustical noise 12,1 dB(A)
Acoustical noise with U.L.N.A. 7,6 dB(A)