NF-A14 iPPC-3000 PWM 140 mm. Any owners here? How do they perform at LOW RPM ONLY (up to 1200 rpm) Enough static pressure to blow air off radiators? Are they quiet at 1200 rpm? They MUST BE QUET. : r/watercooling,Noctua NF-A14 industrialPPC-3000 test - the high-speed fan,Amazon.com: Noctua NF-A14 PWM, Premium Quiet Fan, 4-Pin (140mm, Brown) : Electronics,Amazon.com: Noctua NF-A14 iPPC-3000 PWM, Heavy Duty Cooling Fan, 4-Pin, 3000 RPM (140mm, Black) : Electronics