The odd fan s rpms are strangely high but it s the cpu fan that s out of control.
Imac cpu fan 4000 rpm.
The cpu fan will start ramping up speed slowly until it seems to be maxed out around 4000 rpm noisy.
Here are some simple things you can try that might save you a trip.
But my question is can this hurt the fan if its spinning almos.
To find out if your fans are working at all you can click the custom speed button.
By default apple runs your mac s fans automatically with no way to configure them and it ramps them up when your system gets too hot.
I am in the process of trying to get a replacement however i m worried that the problem wont go away and something else is actually wrong i dont believe the cable and my original hd had the same problem.
Apple s auto control aims for somewhere in the middle.
The same goes if you see a low cpu temperature say around 45 and the fans are running at full speed.
Are the fans in your mac or macbook roaring away at full speed making it sound like your computer is getting ready to take off.
Mac s fan control is definitely doing the job for now i m using the cpu heatsink temp as my rpm controller.
To resolve the issue reset the smc your mac should now start up and work as expected.
Hi all ye i have some temp problems.
This is what happens every time i restart my imac.
The cpu fan still went 4000 rpm and the conclusion was that it is a faulty owc cable.
I just let the auto fan control do the job but most time it needs 90 4300rpm to keep the gpu cool.
I dont care much now about the big sound it makes because i use a headset in game.
If you see high cpu temperatures say over 80 or 90 degrees and that the fans aren t running you might have an issue.
There are two reasons you d want to do this to allow your mac to run faster but louder or slower but quieter.
After running full speed for anywhere from 5 minutes to 30 minutes the computer screen goes black.