Apple Genuine 923-0302 CPU Cooling Fan for iMac 27 inch Late 2012 2013 Retina 5K 2014 Mid 2015 2017 2019 2020
Professional Ventilator Design Open Sourced Today By Medtronic | Hackaday
Single-fan vs dual-fan iMac 24: M1 Apple Silicon's performance potential in 7-core base model spoiled by thermal throttling in benchmark battery - NotebookCheck.net News
How To Replace the Fan in a 27” iMac (Late 2012) - YouTube
Review: 27-Inch iMac 5K with i5 processor - 2012 on the outside, 2019 on the inside | AppleInsider