Review on 🌀 Efficient Dual Ball Bearings Brushless Cooling Fans - WINSINN 24V 4010 40mmx10mm (Pack of 2Pcs) by Randy Basque

I wish I had taken video and audio measurements of an original Creality hot-end fan before I broke it. I was a dummy trying to scrape something off the nozzle while printing with tweezers which I do from time to time (wet filament had petga bubbles) well one end pierced the grid and WOW! The blade flew lol. The stock hot-end fan made a significantly louder and higher-pitched screech. This one was much quieter and much deeper in tone. From what I can see the RPM range is very close so it doesn't look like the Noctura is spinning at half speed to be quieter, it's just that and I would say that the blade pitch and the dual ball bearing setup Add. I took the measurement using the db app in my s20 fe phone sitting on the front rail with the hot end pointing towards the center i.e. about 5 inches apart. The 66dB peak was taken by me to take a screenshot of the readings, so ignore it. You can see the lows and mids were pretty much even, and that's how quiet it really is. The PSU and jet fans are still stock, but I have a spare Winsinn Dual BB if I need to replace them. I would 100% recommend these fans to anyone looking to replace their whiny fans and improve performance while reducing the noise level of your Creality printer.