I wanted to upgrade my stock part cooling fan to a pair of noctua 40mm fans and when I did a test run they barely push any air through the ducts compared
Noctua NF-A4x20 PWM premium-quality quiet 40mm fan : Amazon.com.au: Computers
Creality Ender 3 Pro Hot End Noctua A4x20 Fan Upgrade 40mm x 20mm | FINALLY Some Silence! - YouTube
Noctua NF-P12 redux Fan Review - Overclockers
GA102747 Noctua NF-A4x10 FLX 40mm Low Noise Fan Ultra-Quiet PC Case Fan | eBay
am i the first person who made a noctua laptop fan? : r/Noctua
Noctua 120mm, Anti-Stall Knobs Design,SSO2 Bearing PWM Case Cooling Fan NF-S12A PWM : Amazon.in: Computers & Accessories