With SSD Fan Control you can "calm down" your iMac and keep the fans quiet.
For some people, after upgrading their Apple iMacs with an SSD, the problem is that the fan revs up to full speed after a few minutes and is constantly ventilating at full speed - that is quite loud and sounds like a plane taking off. ;-) This occurs, among other things, if you remove the hard disk installed at the factory from the 2009, 2010 and 2011 iMacs and install an SSD with a [3,5 "to 2,5" hard disk adapter-> hard disk adapter]. The reason for the fan noise is probably due to a temperature sensor which is built into the hard disk and which is queried on the original hard disk via a special firmware and a special connector. Since the iMac does not receive this information about the temperature of the disk from the SSD, it accelerates to be on the safe side and lets the fan run full.
But: there is a solution. And a free one too! If you install the "SSD Fan Control" app, the fan is turned down and you get a quiet iMac again. The author of the software would be happy to receive a donation via PayPal, but he still offers the software free to download at. The software gives the user control over the fans and allows them to set their own speed.
SSD Fan Control settings
The author of the plugin gives a short guide on how to find the right settings:
- Download the software package
- Run the installer (Mac should restart afterwards)
- Start the "SSD Fan Control" program
- Then use the individual controls to find the fan that makes the noise
- Then turn down the loud fans manually or using the "Smart" option. (Smart would be better because then you can rule out the possibility of overheating).
- Enjoy the "Sound of Silence" :)
Update 22.02.2016/XNUMX/XNUMX: Compatible with El Capitan + tips
Another note: the program is also compatible with OS X El Capitan. If you still have problems after updating to El Capitan, you can reinstall the SSD Fan Control software over it and it should work again.
Because of the settings: There is a "Smart" option in the program. If you choose this, the fan should become quiet and increase again at high temperatures. To be on the safe side, you can run something computationally intensive and then keep an eye on the temperatures of the individual sensors. They shouldn't be over 90-100 degrees for long. After that, the CPU usually clocks itself down ... you can tell that everything reacts very slowly and the mouse pointer is lame.
Question to readers: Mojave compatible?
A reader asked me whether SSD Fan Control is also compatible with the new macOS Mojave. Maybe someone already has it in operation and can leave a short feedback here as a comment. I would then note it in the article. According to the developer side, there is only one compatibility up to High Sierra. But there is also a tip if it should no longer work after a macOS upgrade:
SSD Fan Control is compatible with MacOS 10.13 (High Sierra). If it fails after upgrading MacOS, try an SMC reset first. In some cases reinstalling is required.
In other words: If the software no longer likes after the update, the best thing to do is to run one SMC reset off ... if it still refuses to work, reinstalling the fan control software could help.
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.