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Slow Mac Pro 6,1 and fan runs full speed

My Mac Pro 6,1 just recently got slow. When the machine powers up and gets to log-in page, I realize the fan picks-up speed gradually and the computer becomes slow during boot.


when It first started to get slow I realized this problem was showing up at particular time of the day(usually after5pm).I work from home and usually my neighbors have come how by then. So I was thinking it was related with power quality as at that time the electricity increased in the area. (but I use a UPS APC 1000va) But lately this problem pop up everytime I power up the Mac. I am unable to use it as the Mac runs extremely slow.


I have been running os Monterey for a while now with the latest updates. The hard drive is the standard 500…gb SSD it came with and the d500 gpu’s. Ram is 32gb and until recently the machine had been awesome at delivering every task I give it.


I opened the machine and I saw some durst on the heat sink right opposite the fun. I cleaned the machine with brush and blower.


I have more than half of free storage space. The fans blows loudest like and rendering a video but the air coming from the vent is cool not hot. Kernel_task is at its highest usually over 1200. The machine seems to be working soo hard even at start-up. I did an Apple diagnostic test and it reported a PFM006 error.


Please if anyone knows how overcome this problem pls help.


Thanks


Posted on Aug 13, 2023 4:41 PM

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Question marked as Top-ranking reply

Posted on Aug 13, 2023 5:35 PM

PFM006 indicates a problem with the SMC.

see > Apple Diagnostics reference codes - Apple Support


I would reset the SMC and test it plugged directly into a wall outlet without the UPS.

see > Reset the SMC of your Mac - Apple Support


Desktop computer

  1. Shut down your Mac, then unplug the power cord.
  2. Wait 15 seconds, then plug the power cord back in.
  3. Wait 5 seconds, then press the power button to turn on your Mac.

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1 reply
Question marked as Top-ranking reply

Aug 13, 2023 5:35 PM in response to desmond84

PFM006 indicates a problem with the SMC.

see > Apple Diagnostics reference codes - Apple Support


I would reset the SMC and test it plugged directly into a wall outlet without the UPS.

see > Reset the SMC of your Mac - Apple Support


Desktop computer

  1. Shut down your Mac, then unplug the power cord.
  2. Wait 15 seconds, then plug the power cord back in.
  3. Wait 5 seconds, then press the power button to turn on your Mac.

Slow Mac Pro 6,1 and fan runs full speed

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