My normal fan rpm’s on all three devices were in the upper 900’s to 1200’s, yet even in idle mode doing nothing except changing desktop pictures or screensaver pictures the fans were racing audibly in the 2000’s to 3000’s RPM, Temperature to fluctuate from the high 50s to the mid 90☌ to the mid 90☌temperature to fluctuate from the high 50s to the mid 90☌!. This is my testimony and experience with an App from a developer named Crystalidea, which is a PC based developer, except for this one app named “Macs Fan Control”, and recommend, after a several week experience of spurious very high temperatures exceeding 92☌ causing three different iMac’s to shut down automatically and restart, and giving me an Apple notice to send to Apple concerning a Panic Event! Do NOT download and install on your macOS computer, is only my opinion and Experience.Īfter installing and using Cyrstalidea’s App “Macs Fan Control” for several weeks, I was able to consistently and repeatedly on three different iMac’s (2011 iMac, 2014 iMac, 2020 iMac, all 27 inch), caused all three to overheat receiving Numerous warning numerous warningnumerous warnings notices from iStat Menus of temperatures Exceeding more mor than 92☌ for over 10 seconds, causing all three to shut down and restart, as set in system preferences.

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