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Amazon.com: ARCTIC F14 Silent - 140 mm Case Fan, Ultra-Quiet, Extra Quiet Motor, Computer, Almost inaudible, Fan Speed: 800 RPM - Black/White : Electronics
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Amazon.com: ARCTIC F14 PWM PST - 140 mm PWM PST Case Fan with PWM Sharing Technology (PST), Very Quiet Motor, Computer, Fan Speed: 200-1350 RPM - Black : Electronics
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ARCTIC COOLING F14 PWM PST CO ACFAN00080A Non-LED LED 140mm PWM with PST Case Fan for Continuous Operation - Newegg.com
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