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A Macbook Pro fan should always be on. However it should not be excessively noisy or running at a high speed all the time. If it is running at maximum RPM (usually about 6000 on a Macbook Pro), this indicates there is software running on your Mac that is stressing the CPU or GPU.
Open Activity Monitor to see which apps are using the most CPU. You can also see which apps are using the most energy as well. Apps like Photoshop, Final Cut Pro, and VMware Fusion/Parallels tend to cause the fans to speed up, as the temperature of your CPU/GPU will increase when using those apps.
Disable Flash in your browser. Flash is now disabled by default in Firefox. In Chrome, you can use Flashcontrol to disable instances of Flash (it still allows you to view Flash on a per-site basis as needed). It’s one of the biggest causes of CPU/GPU stress, and will no doubt increase your Macbook Pro fan speed because Flash is so intensive on hardware.
Restart your Macbook Pro. If the fan is continually running at a high speed, try a Restart.
-If a restart doesn’t work, try resetting the SMC and PRAM. The SMC reset especially may help. Find out how to Reset the SMC and Reset the PRAM.
+If a restart doesn’t work, try resetting the SMC and PRAM. The SMC reset especially may help.

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Post originale di: Dimitrios ,

Testo:

A Macbook Pro fan should always be on. However it should not be excessively noisy or running at a high speed all the time. If it is running at maximum RPM (usually about 6000 on a Macbook Pro), this indicates there is software running on your Mac that is stressing the CPU or GPU.

Open Activity Monitor to see which apps are using the most CPU. You can also see which apps are using the most energy as well. Apps like Photoshop, Final Cut Pro, and VMware Fusion/Parallels tend to cause the fans to speed up, as the temperature of your CPU/GPU will increase when using those apps.

Disable Flash in your browser. Flash is now disabled by default in Firefox. In Chrome, you can use Flashcontrol to disable instances of Flash (it still allows you to view Flash on a per-site basis as needed). It’s one of the biggest causes of CPU/GPU stress, and will no doubt increase your Macbook Pro fan speed because Flash is so intensive on hardware.

Restart your Macbook Pro. If the fan is continually running at a high speed, try a Restart.

If a restart doesn’t work, try resetting the SMC and PRAM. The SMC reset especially may help. Find out how to Reset the SMC and Reset the PRAM.

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open