Noctua NF-F12 iPPC 3000 PWM, Heavy Duty Cooling Fan, 4-Pin, 3000 RPM (120mm, Black) Case Fans - Newegg.com
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Thinking of getting a scythe fan (designed to spin clockwise), put a brake on it so it acts as a stator then put behind a noctua for max static pressure. : r/Noctua