Arctic P14 Slim PWM PST Revisions Noise test

Noise sample, P14 Slim PWM PST, for 2 revisions, Mounted on a case front. Part 1: The fans operate PWM 0% to 100% and 100% to 0%, gradually changing the rotational speed. Part 2: The fans are standardized to make same noise levels. (~34, ~35dBA) Part 1 - 0:04 Noise sample for PWM operation. Part 2 - 2:48 Noise samples for specific noise levels. Arctic made some changes on P14 Slim. The external difference between Rev.1 and Rev.2 is as follows: i) Addition of the outer ring that connects tips of each blade ii) Thicker rear struts (~2mm → ~4mm) iii) Closer distance between a top of impeller and a front frame (2~3mm → 0~1mm) iv) Tighter gap between an edge of a blade and inner frame (~3mm → ~1mm) Microphone: MATASTUDIO C10 Camera: Samsung Galaxy Note 9 Controlled by lich426&FanCtrl