How-To: FIX MAC PRO FAN SPEEDS when using PC (non-EFI) Graphics Cards

[Guest SteveJobzniak]

The temperature sensors in the Mac Pro are not tuned for things like modern nVIDIA graphics cards and certain SSDs or HDs, and will ramp up the fans tremendously, even though the temperatures are low. The sensitivity range was tuned for the super-cold, old graphics cards the system shipped with.

 

Some people have discovered that running and then closing a 3D application after every cold reboot would get their PCI "non-EFI" graphics cards into a colder/power-saving mode, which makes the Mac...

 

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