Test Methodology
I use an LW-9266 Fan PQ performance measurement apparatus to evaluate cooling fans. This highly sophisticated scientific instrument was 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, I 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
Pages:
Proprietary connections with need of a special SW (this fan), proprietary fan connections (BQ DR Elite) with special adjusted form factor of the fans (BQ DR Elite, CM MA824 Stealth & Assassin IV) that you cannot even buy from the manufacturer, and you have to look for it on AliExpress… And people think… what an “exclusive solution” …exclusive doesn’t mean something is “cool”, but the exclusion of other options, solutions, and replacements … and people are even willing to pay more for such an “exclusivity” … when the Apple can profit on it, why wouldn’t others try the same recipe.
…sorry for grumbling, but I can help myself 😊, …by the way great review as usual.
I hope that other manufacturer will not “applemimic” themselves and will not jump on the “great ship of exclusivity” and proprietary environment.
True, exclusive parts or connectors are not always good, especially when we are talking about fans. Corsair’s idea on the Link is good, but other brands won’t follow it, so it is only for Corsair products, which are expensive (but of good quality at least).
I think you have an error in your data for the Lian Li TL fan. CFM at 25dBA should be 44.6CFM and not the 57.2 you state and mmAQ should be 1.4 and not 1.62. I checked with the data from here: https://www.cybenetics.com/index.php?option=fans&manfID=79
HTH