The cheapest 140mm fan we’ve tested so far beats even significantly more expensive 120mm models at comparable noise levels. That’s because of the use of a larger cross-sectional area, as well as the efficient impeller geometry that the Stratus 140 PWM definitely has. “Cheap” fan doesn’t necessarily mean “weak”, though of course there are some compromises based on more limited manufacturing resources than with more expensive fans.
Results: Frequency response of sound w/o obstacles
Measurements are performed in the TrueRTA application, which records sound in a range of 240 frequencies in the recorded range of 20–20,000 Hz. For the possibility of comparison across articles, we export the dominant frequency from the low (20–200 Hz), medium (201–2,000 Hz) and high (2,001–20,000 Hz) range to standard bar graphs.
However, for an even more detailed analysis of the sound expression, it is important to perceive the overall shape of the graph and the intensity of all frequencies/tones. If you don’t understand something in the graphs or tables below, you’ll find the answers to all your questions in this article. It explains how to read the measured data below correctly.
The vast majority of fan sound operates in the 70–7000 Hz band. You can virtually ignore frequencies above 7000 Hz, they reflect electromagnetic noise from the measurement chain. This (electromagnetic noise) also extends to frequencies below 70 Hz, although there is still aerodynamic noise at these frequencies. These bands (below 70 Hz and above 7 kHz) could be safely “cut out”, but we do not. Just in case one of the fans does have an anomaly that needs to be controlled and visualized.
| Fan | Dominant sound freq. and noise level, no obstacle@33 dBA | NF-F12 PWM | NF-A15 PWM | ||||
| Low range | Mid range | High range | |||||
| Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | ||
| Endorfy Stratus 140 PWM | Endorfy Stratus 140 PWM | 103,7 | -71,5 | 391,7 | -83,2 | 19897,0 | -90,9 |
| PCCooler CPS F5 R120 BK | 127,0 | -76,3 | 380,5 | -81,0 | 19330,5 | -90,8 | |
| Thermaltake Toughfan 14 Pro | Thermaltake Toughfan 14 Pro | 20,3 | -77,0 | 380,5 | -82,3 | 18780,2 | -90,9 |
| Fractal Design Venturi HP-14 PWM | 47,6 | -78,1 | 380,5 | -82,7 | 19330,5 | -90,8 | |
| Seasonic MagFlow 1225 PWM | N/A | N/A | N/A | N/A | N/A | N/A | |
| Arctic P12 PWM PST | 80,0 | -72,4 | 201,6 | -77,5 | 19897,0 | -90,7 | |
| Cooler Master Mobius 120 OC | Cooler Master Mobius 120 OC | 41,8 | -76,0 | 1107,9 | -78,2 | 19330,5 | -90,7 |
| Corsair AF120 RGB Elite | 58,2 | -80,9 | 269,1 | -80,1 | 19330,5 | -91,0 | |
| Enermax SquA RGB White | 50,4 | -80,6 | 369,7 | -81,9 | 19330,5 | -90,8 | |
| Endorfy Fluctus 140 PWM | 20,6 | -75,1 | 391,7 | -83,3 | 19330,5 | -90,9 | |
| Endorfy Fluctus 140 PWM ARGB | 20,6 | -74,7 | 403,2 | -81,6 | 18780,2 | -90,9 | |
| Arctic P12 Slim PWM PST | 100,8 | -83,4 | 369,7 | -76,8 | 19330,5 | -90,9 | |
| BeQuiet! Silent Wings Pro 4 (BL099) | BeQuiet! Silent Wings Pro 4 (BL099) | 109,9 | -74,9 | 391,7 | -80,0 | 18780,2 | -90,9 |
| Fractal Design Prisma AL-14 PWM | 41,8 | -80,3 | 1208,2 | -77,5 | 19330,5 | -90,8 | |
| Gigabyte Aorus 140 ARGB | 92,4 | -77,3 | 380,5 | -80,3 | 19330,5 | -91,0 | |
| BeQuiet! Light Wings (BL075) | 138,5 | -73,3 | 391,7 | -80,5 | 19330,5 | -90,8 | |
| Fractal Design Aspect 14 RGB PWM | 50,4 | -68,1 | 391,7 | -78,5 | 18780,2 | -90,8 | |
| DeepCool FK120 | 138,5 | -77,5 | 246,8 | -68,6 | 18780,2 | -90,9 | |
| Asus TUF Gaming TF120 | 130,7 | -82,8 | 369,7 | -80,9 | 19897,0 | -90,8 | |
| BeQuiet! Light Wings (BL072) | 23,1 | -71,7 | 380,5 | -72,9 | 18780,4 | -90,8 | |
| DeepCool FC120 | 195,8 | -77,4 | 201,6 | -78,5 | 19330,5 | -90,7 | |
| Nidec Servo Gentle Typhoon D1225C (2150/12) | 127,0 | -78,2 | 339,0 | -86,0 | 19330,5 | -90,7 | |
| BeQuiet! Shadow Wings 2 (BL085) | 151,0 | -79,8 | 369,7 | -79,0 | 19897,0 | -90,8 | |
| Noctua NF-A12x25 PWM | 50,4 | -80,2 | 380,5 | -80,6 | 19897,0 | -90,8 | |
| Corsair AF120 Elite (black) | 130,7 | -76,9 | 369,7 | -81,6 | 19330,5 | -90,7 | |
| Cooler Master MasterFan SF120M | 50,4 | -80,9 | 1566,8 | -87,5 | 4305,4 | -89,2 | |
| Akasa Alucia SC12 | 50,4 | -78,8 | 1566,8 | -91,5 | 19330,5 | -90,7 | |
| BeQuiet! Silent Wings Pro 4 (BL098) | 50,4 | -81,2 | 339,0 | -80,8 | 2712,2 | -87,1 | |
| Thermalright X-Silent 120 | 50,4 | -79,0 | 369,7 | -88,6 | 4974,2 | 87,1 | |
| Fractal Design Aspect 12 RGB PWM | 20,7 | -76,1 | 380,5 | -80,5 | 19897,0 | -90,9 | |
| BeQuiet! Silent Wings 3 (BL066) | 97,9 | -75,2 | 1107,9 | -79,1 | 19897,0 | -90,8 | |
| Gelid Zodiac | 119,9 | -71,1 | 380,5 | -80,9 | 19897,0 | -91,0 | |
| Fractal Design Dynamic X2 GP-12 PWM | 47,6 | -72,8 | 1015,4 | -79,9 | 19897,0 | -90,7 | |
| BeQuiet! Pure Wings 2 (BL039) | 47,6 | -78,3 | 958,9 | -79,6 | 18780,2 | -91,0 | |
| Gigabyte Aorus 120 ARGB | 130,7 | -82,8 | 369,7 | -80,7 | 19330,5 | -90,9 | |
| Arctic BioniX P120 A-RGB | 127,0 | -73,2 | 219,8 | -70,4 | 19897,0 | -90,9 | |
| Akasa OTTO SF12 | N/A | N/A | N/A | N/A | N/A | N/A | |
| Cooler Master SickleFlow 120 ARGB | Cooler Master SickleFlow 120 ARGB | 59,9 | -82,7 | 1076,3 | -83,1 | 19330,5 | -90,7 |
| Alphacool SL-15 PWM | Alphacool SL-15 PWM | 190,3 | -79,1 | 380,5 | -78,8 | 18245,6 | -90,9 |
| Arctic BioniX F120 | Arctic BioniX F120 | 123,4 | -76,5 | 246,8 | -80,0 | 19330,5 | -90,9 |
| SilverStone SST-AP123 | SilverStone SST-AP123 | 100,8 | -81,2 | 415,0 | -78,6 | 19897,0 | -90,8 |
| Noctua NF-P12 redux-1700 PWM | 103,7 | -76,9 | 329,4 | -73,2 | 19330,5 | -90,9 | |
| SilentiumPC Fluctus 120 PWM | SilentiumPC Fluctus 120 PWM | 130,7 | -76,5 | 369,7 | -80,9 | 19897,0 | -91,0 |
| MSI MEG Silent Gale P12 | 50,4 | -81,7 | 369,7 | -81,0 | 19897,0 | -90,8 | |
| Asus ROG Strix XF120 | 50,4 | -80,2 | 329,4 | -76,2 | 19330,5 | -90,8 | |
| Akasa Vegas X7 | 123,4 | -77,0 | 369,7 | -83,3 | 19330,5 | -90,7 | |
| Reeven Coldwing 12 | 38,9 | -79,7 | 1317,5 | -84,0 | 19330,5 | -90,7 | |
| Reeven Kiran | 138,5 | -80,6 | 369,7 | -83,3 | 19330,5 | -90,8 | |
| SilentiumPC Sigma Pro 120 PWM | N/A | N/A | N/A | N/A | N/A | N/A | |
| SilentiumPC Sigma Pro Corona RGB 120 | 92,4 | -83,0 | 369,7 | -78,0 | 18780,2 | -90,8 | |
| SilverStone SST-AP121 | 47,6 | -77,5 | 261,4 | -86,4 | 19330,5 | -91,0 | |
| SilverStone SST-FQ121 | 31,3 | -87,5 | 1208,2 | -79,9 | 19330,5 | -90,9 | |
| Xigmatek XLF-F1256 | 41,8 | -69,7 | 213,6 | -77,3 | 19330,5 | -91,0 |
| Fan | Dominant sound freq. and noise level, no obstacle@39 dBA | NF-F12 PWM | NF-A15 PWM | ||||
| Low range | Mid range | High range | |||||
| Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | ||
| Endorfy Stratus 140 PWM | Endorfy Stratus 140 PWM | 151,0 | -64,2 | 403,2 | -75,2 | 19897,0 | -91,0 |
| PCCooler CPS F5 R120 BK | 20,6 | -72,2 | 369,7 | -70,8 | 19330,5 | -90,8 | |
| Thermaltake Toughfan 14 Pro | 146,7 | -69,0 | 380,5 | -75,4 | 19897,0 | -90,8 | |
| Fractal Design Venturi HP-14 PWM | 109,9 | -74,2 | 380,5 | -72,3 | 19330,5 | -90,8 | |
| Seasonic MagFlow 1225 PWM | 138,5 | -74,5 | 1015,9 | -69,6 | 19330,5 | -90,6 | |
| Arctic P12 PWM PST | 113,1 | -65,4 | 369,7 | -73,2 | 18780,2 | -90,8 | |
| Cooler Master Mobius 120 OC | 130,7 | -72,0 | 1107,9 | -71,7 | 19897,0 | -90,8 | |
| Corsair AF120 RGB Elite | 169,5 | -73,5 | 339,0 | -69,7 | 19330,5 | -90,7 | |
| Enermax SquA RGB White | 146,7 | -69,4 | 369,7 | -74,6 | 18245,6 | -91,0 | |
| Endorfy Fluctus 140 PWM | 151,0 | -66,2 | 380,5 | -75,9 | 19330,5 | -91,0 | |
| Endorfy Fluctus 140 PWM ARGB | 138,5 | -72,6 | 391,7 | -72,7 | 19330,5 | -90,8 | |
| Arctic P12 Slim PWM PST | 127,0 | -75,6 | 380,5 | -72,0 | 19330,5 | -90,9 | |
| BeQuiet! Silent Wings Pro 4 (BL099) | 127,0 | -78,7 | 380,5 | -75,1 | 2416,3 | -86,2 | |
| Fractal Design Prisma AL-14 PWM | 109,9 | -75,3 | 391,7 | -73,9 | 5583,4 | -90,0 | |
| Gigabyte Aorus 140 ARGB | 116,5 | -71,7 | 391,7 | -73,0 | 3225,4 | -90,9 | |
| BeQuiet! Light Wings (BL075) | 184,9 | -69,8 | 391,7 | -73,5 | 19330,5 | -90,8 | |
| Fractal Design Aspect 14 RGB PWM | 92,4 | -76,0 | 391,7 | -70,8 | 17726,2 | -91,0 | |
| DeepCool FK120 | 38,9 | -78,8 | 246,8 | -67,0 | 19330,5 | -90,9 | |
| Asus TUF Gaming TF120 | 127,0 | -76,0 | 380,5 | -74,6 | 19330,5 | -90,8 | |
| BeQuiet! Light Wings (BL072) | 138,5 | -80,1 | 369,7 | -78,4 | 18780,4 | -90,9 | |
| DeepCool FC120 | 195,8 | -71,5 | 201,6 | -68,0 | 3620,4 | -89,7 | |
| Nidec Servo Gentle Typhoon D1225C (2150/12) | 190,3 | -69,7 | 380,5 | -73,8 | 18780,2 | -91,0 | |
| BeQuiet! Shadow Wings 2 (BL085) | N/A | N/A | N/A | N/A | N/A | N/A | |
| Noctua NF-A12x25 PWM | 23,1 | -73,9 | 369,7 | -74,1 | 19897,0 | -90,7 | |
| Corsair AF120 Elite (black) | 164,7 | -79,2 | 339,0 | -72,8 | 19897,0 | -90,7 | |
| Cooler Master MasterFan SF120M | 146,7 | -78,8 | 380,5 | -77,9 | 2635,0 | -83,9 | |
| Akasa Alucia SC12 | 151,0 | -80,6 | 226,3 | -73,4 | 19897,0 | -90,7 | |
| BeQuiet! Silent Wings Pro 4 (BL098) | 20,3 | -76,0 | 339,0 | -73,9 | 2791,7 | -83,3 | |
| Thermalright X-Silent 120 | 119,9 | -74,0 | 369,7 | -75,0 | 10540,1 | -88,4 | |
| Fractal Design Aspect 12 RGB PWM | 20,7 | -70,4 | 380,5 | -72,4 | 18780,2 | -90,8 | |
| BeQuiet! Silent Wings 3 (BL066) | 130,7 | -70,1 | 369,7 | -75,2 | 18780,2 | -90,9 | |
| Gelid Zodiac | 146,7 | -66,0 | 369,7 | -73,4 | 19330,5 | -90,9 | |
| Fractal Design Dynamic X2 GP-12 PWM | 113,1 | -78,5 | 329,4 | -74,6 | 18780,2 | -90,9 | |
| BeQuiet! Pure Wings 2 (BL039) | 130,7 | -76,1 | 369,7 | -75,3 | 19330,5 | -90,7 | |
| Gigabyte Aorus 120 ARGB | 127,0 | -63,9 | 380,5 | -74,2 | 19330,5 | -90,6 | |
| Arctic BioniX P120 A-RGB | 50,4 | -77,9 | 439,7 | -72,4 | 18780,2 | -91,1 | |
| Akasa OTTO SF12 | 155,4 | -67,1 | 380,5 | -75,2 | 4431,5 | -87,2 | |
| Cooler Master SickleFlow 120 ARGB | 109,9 | -72,8 | 1076,3 | -72,4 | 18245,6 | -90,9 | |
| Alphacool SL-15 PWM | 184,9 | -73,4 | 380,5 | -73,1 | 19897,0 | -90,8 | |
| Arctic BioniX F120 | 151,0 | -69,3 | 369,7 | -75,3 | 18780,2 | -91,0 | |
| SilverStone SST-AP123 | SilverStone SST-AP123 | 164,7 | -75,1 | 369,7 | -74,7 | 19330,5 | -90,9 |
| Noctua NF-P12 redux-1700 PWM | 146,7 | -68,0 | 329,4 | -66,7 | 18245,6 | -91,1 | |
| SilentiumPC Fluctus 120 PWM | 190,3 | -69,2 | 380,5 | -68,8 | 19897,0 | -90,9 | |
| MSI MEG Silent Gale P12 | 23,1 | -73,5 | 380,5 | -73,3 | 18780,2 | -90,9 | |
| Asus ROG Strix XF120 | 130,7 | -70,9 | 369,7 | -75,2 | 19330,5 | -91,0 | |
| Akasa Vegas X7 | 127,0 | -77,8 | 369,7 | -76,1 | 19330,5 | -90,9 | |
| Reeven Coldwing 12 | 160,0 | -74,0 | 369,7 | -76,8 | 19330,5 | -90,9 | |
| Reeven Kiran | 184,9 | -75,2 | 369,7 | -75,2 | 17726,2 | -89,8 | |
| SilentiumPC Sigma Pro 120 PWM | 97,9 | -81,7 | 369,7 | -78,1 | 2635,0 | -86,2 | |
| SilentiumPC Sigma Pro Corona RGB 120 | 20,3 | -67,8 | 380,5 | -77,3 | 2487,1 | -85,6 | |
| SilverStone SST-AP121 | 103,7 | -76,2 | 339,0 | -73,4 | 2031,9 | -86,5 | |
| SilverStone SST-FQ121 | 138,5 | -75,2 | 1208,2 | -71,1 | 18780,2 | -90,9 | |
| Xigmatek XLF-F1256 | 190,3 | -77,1 | 761,1 | -75,5 | 19897,0 | -91,1 |
| Fan | Dominant sound freq. and noise level, no obstacle@45 dBA | NF-F12 PWM | NF-A15 PWM | ||||
| Low range | Mid range | High range | |||||
| Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | Frequency [Hz] | Noise level [dBu] | ||
| Endorfy Stratus 140 PWM | 179,6 | -59,9 | 391,7 | -69,1 | 2560,0 | -87,8 | |
| PCCooler CPS F5 R120 BK | 23,1 | -66,3 | 207,5 | -74,0 | 2487,1 | -90,7 | |
| Thermaltake Toughfan 14 Pro | 184,9 | -64,9 | 391,7 | -70,1 | 19330,5 | -90,8 | |
| Fractal Design Venturi HP-14 PWM | 130,7 | -66,9 | 380,5 | -68,0 | 7240,8 | -90,8 | |
| Seasonic MagFlow 1225 PWM | 195,8 | -63,8 | 958,9 | -67,0 | 18780,2 | -90,8 | |
| Arctic P12 PWM PST | 130,7 | -57,9 | 415,0 | -59,1 | 19897,0 | -90,6 | |
| Cooler Master Mobius 120 OC | 20,6 | -68,1 | 369,7 | -71,3 | 3417,2 | -89,3 | |
| Corsair AF120 RGB Elite | 134,5 | -67,3 | 269,1 | -62,2 | 19330,5 | -90,9 | |
| Enermax SquA RGB White | 184,9 | -67,4 | 369,7 | -70,4 | 19897,0 | -90,9 | |
| Endorfy Fluctus 140 PWM | 20,6 | -60,9 | 195,8 | -64,3 | 2487,1 | -85,5 | |
| Endorfy Fluctus 140 PWM ARGB | 20,6 | -62,0 | 391,7 | -68,9 | 19330,5 | -90,8 | |
| Arctic P12 Slim PWM PST | 155,4 | -67,8 | 380,5 | -63,5 | 2031,9 | -89,0 | |
| BeQuiet! Silent Wings Pro 4 (BL099) | 179,6 | -65,5 | 380,5 | -69,3 | 2487,1 | -83,2 | |
| Fractal Design Prisma AL-14 PWM | 138,5 | -68,1 | 391,7 | -65,6 | 5583,4 | -87,2 | |
| Gigabyte Aorus 140 ARGB | 151,0 | -68,4 | 391,7 | -66,5 | 2280,7 | -89,8 | |
| BeQuiet! Light Wings (BL075) | 130,7 | -78,8 | 232,9 | -62,1 | 19330,5 | -90,9 | |
| Fractal Design Aspect 14 RGB PWM | 134,5 | -70,9 | 391,7 | -65,8 | 17726,2 | -91,1 | |
| DeepCool FK120 | 23,1 | -68,0 | 604,1 | -65,8 | 19897,0 | -91,0 | |
| Asus TUF Gaming TF120 | 23,1 | -66,2 | 380,5 | -70,6 | 2957,7 | -88,1 | |
| BeQuiet! Light Wings (BL072) | N/A | N/A | N/A | N/A | N/A | N/A | |
| DeepCool FC120 | 195,8 | -71,5 | 380,5 | -72,8 | 3417,2 | -85,7 | |
| Nidec Servo Gentle Typhoon D1225C (2150/12) | 25,6 | -68,0 | 239,7 | -62,3 | 2280,7 | -84,1 | |
| BeQuiet! Shadow Wings 2 (BL085) | N/A | N/A | N/A | N/A | N/A | N/A | |
| Noctua NF-A12x25 PWM | 28,3 | -72,5 | 269,1 | -69,8 | 2215,8 | -89,6 | |
| Corsair AF120 Elite (black) | 130,7 | -78,5 | 369,7 | -70,9 | 19330,5 | -90,9 | |
| Cooler Master MasterFan SF120M | 184,9 | -69,7 | 369,7 | -67,9 | 4305,4 | -73,8 | |
| Akasa Alucia SC12 | 130,7 | -70,3 | 380,5 | -68,6 | 2031,9 | -90,4 | |
| BeQuiet! Silent Wings Pro 4 (BL098) | 47,6 | -75,5 | 339,0 | -60,5 | 2791,7 | -83,3 | |
| Thermalright X-Silent 120 | 82,3 | -74,9 | 369,7 | -91,1 | 18780,2 | -91,1 | |
| Fractal Design Aspect 12 RGB PWM | 130,7 | -69,5 | 285,1 | -67,2 | 19330,5 | -90,8 | |
| BeQuiet! Silent Wings 3 (BL066) | 164,7 | -64,2 | 339,0 | -69,1 | 18780,2 | -90,8 | |
| Gelid Zodiac | 184,9 | -61,8 | 380,5 | -68,7 | 18780,2 | -90,8 | |
| Fractal Design Dynamic X2 GP-12 PWM | 146,7 | -72,2 | 391,7 | -71,5 | 2280,7 | -83,1 | |
| BeQuiet! Pure Wings 2 (BL046) | 130,7 | -71,3 | 369,7 | -69,3 | 19330,5 | -90,6 | |
| Gigabyte Aorus 120 ARGB | 160,0 | -61,9 | 369,7 | -70,4 | 2487,1 | -88,3 | |
| Arctic BioniX P120 A-RGB | 151,0 | -67,6 | 369,7 | -72,0 | 2873,5 | -90,6 | |
| Akasa OTTO SF12 | Akasa OTTO SF12 | 190,3 | -66,7 | 380,5 | -67,7 | 4695,1 | -86,3 |
| Cooler Master SickleFlow 120 ARGB | Cooler Master SickleFlow 120 ARGB | 138,5 | -66,7 | 1076,3 | -67,1 | 3835,7 | -89,2 |
| Alphacool SL-15 PWM | Alphacool SL-15 PWM | 151 | -71,5 | 232,9 | -66,5 | 2280,7 | -89,6 |
| Arctic BioniX F120 | Arctic BioniX F120 | 195,8 | -68 | 201,6 | -62,2 | 19330,5 | -90,7 |
| SilverStone SST-AP123 | SilverStone SST-AP123 | 130,7 | -70,9 | 369,7 | -67,7 | 19897 | -90,9 |
| Noctua NF-P12 redux-1700 PWM | Noctua NF-P12 redux-1700 PWM | 184,9 | -62,2 | 369,7 | -67,0 | 19897 | -91,1 |
| SilentiumPC Fluctus 120 PWM | SilentiumPC Fluctus 120 PWM | 25,6 | -69,6 | 239,7 | -62,0 | 2957,7 | -90,0 |
| MSI MEG Silent Gale P12 | MSI MEG Silent Gale P12 | 28,3 | -73,5 | 380,5 | -71,0 | 2487,1 | -85,9 |
| Asus ROG Strix XF120 | Asus ROG Strix XF120 | 23,1 | -62,9 | 369,7 | -71,7 | 2347,5 | -89,1 |
| Akasa Vegas X7 | Akasa Vegas X7 | N/A | N/A | N/A | N/A | N/A | N/A |
| Reeven Coldwing 12 | Reeven Coldwing 12 | 195,8 | -68,3 | 380,5 | -71,3 | 2031,9 | -90 |
| Reeven Kiran | Reeven Kiran | 130,7 | -73,1 | 219,8 | -70,2 | 17726,2 | -89,4 |
| SilentiumPC Sigma Pro 120 PWM | SilentiumPC Sigma Pro 120 PWM | 138,5 | -70,0 | 1522,2 | -71,9 | 2560 | -82,9 |
| SilentiumPC Sigma Pro Corona RGB 120 | SilentiumPC Sigma Pro Corona RGB 120 | 190,3 | -70,5 | 369,7 | -66,5 | 2416,3 | -82,4 |
| SilverStone SST-AP121 | SilverStone SST-AP121 | 130,7 | -66,8 | 439,7 | -66,1 | 2347,5 | -90,9 |
| SilverStone SST-FQ121 | SilverStone SST-FQ121 | 127 | -71,2 | 369,7 | -66,5 | 2031,8 | -81,4 |
| Xigmatek XLF-F1256 | Xigmatek XLF-F1256 | 130,7 | -71,5 | 239,7 | -60,9 | 18780,2 | -91,1 |
Why is there a missing value sometimes? There may be more reasons. Usually it is because the fan could not be adjusted to the target noise level. Some have a higher minimum speed (or the speed is low, but the motor is too noisy) or it is a slower fan that will not reach the higher decibels. But the results in the graphs are also missing if the impeller is brushing against the nylon filter mesh. In that case, we evaluate this combination as incompatible. And zero in the graphs is naturally also in situations where we measure 0.00. This is a common occurrence at extremely low speeds with obstructions or within vibration measurements.
stratus 14 is more expensive than arctic p14, therefore it’s not cheap.
It may or may not be. It will depend on the specific store you are shopping at. Somewhere the Stratus 140 PWM fan may be more expensive (probably especially in the US?), somewhere else it may be a bit cheaper.