Test Methodology
We evaluate cooling fans using an LW-9266 Fan PQ performance measurement apparatus. This highly sophisticated scientific instrument, made in Taiwan by Long Win.
Fan Testing Machine Technical Specifications:
- Manufacturer: Long Win Science & Technology Corporation
- Air Flow Rate: 2.4 – 250 CFM
- Accuracy of Air Flow Rage: <3.5% INFS
- Repeatability error: < 2%
- Static pressure: 0-20mmAq (100mmAq with the high static pressure throttle device)
- Overall Dimensions: 0.7 (W) x 2.2 (L) x 1.6 (H) m
- Power Source: 220VAC, 5A, Single Phase, 50/60Hz
- Based on Standards: ISO 5801-2007, AMCA 210-0, ASHRAE 51-2007, IEC 61591-2005, GB/T 1236-200
Besides the Long Win machine, we also use the following equipment.
Testing Equipment:
- Noise Test Environment: Hemi-Anechoic Chamber with 6 dB(A) noise floor
- Conditions: 25 (+-2) degrees Celsius, 40-50% humidity
- Sound Analyzer: Bruel & Kjaer 2270-S G4
- Microphone: Bruel & Kjaer Type 4955-A
- Mic Calibrator: Bruel & Kjaer Type 4231
- Data Logger: Picoscope TC-08
The price of these best fans is something I wouldn’t consider. Best value is more important to me
Thank you so much for these in-depth reviews! Currently speccing out fans for a water cooled server -extra thick radiators. Truly appreciate your normalized evaluations of CFM, static pressure, and noise at different speeds and sound levels. Your dedication is unmatched. You’ve easily put out the fairest and most comprehensive review of the SilverStone FHS 120X to date. Look forward to more ultra high performance fan writeups! I’m checking the site every day now!
thank you!!
I don’t see any Noctua ! At least from the point of noise if not else
In the next update. We are enriching our database day by day, re-testing also several fans to improve the accuracy of our results.