Mac Pro Late 2013: Anything that can be done about coil whine?

"Hi Sascha!

I remember having had the same problem. When transferring a lot of data via Ethernet or WiFi, it started whining and maybe even „crackling“. Unfortunately I haven't found a solution for this problem.

It's always very frustrating to have coil whine or similar noise issues. At the Genius Bar, it's very often so loud that nobody will be able to hear the whining of the computer.

Since your post is a few years old now, I am quite curious if you found any solution? My solution was to sell the Mac Pro and wait for the next generation (with naive and high hopes).

A thing that just came to my mind: Have you tried to disable the internal ethernet and wifi interface and use a ethernet-to-usb or 3rd party wifi usb adapter? I'd like to know if this would change anything.

Best regards,

Ben"

"If you purchased it in the USA from Apple (direct not a box store) you have 14 days to take it back for a different one. If passed that date it should be warranted for one year. Were I you I would be having discussions with Apple Support, not planning on a DIY ""fix"" for a box that spend and new.

If this answer is acceptable please remember to return and mark it."

"This solved my problem, only took less than 1 minute

The first thing you should try is reset the SMC . All you have to do is unplug the computer from the power source ( back of the computer power cord) wait 15 to 25 seconds just in case you count to fast.Then Plug it back in and RESTART the computer the fan should reset back to normal. If this trick does not work then the fan is probably dirty and needs to be cleaned or it may need to be replaced. ( Always Try the simple things first ) like going to ifixit.com and ask a question."