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Why does my Macbook fan come on watching videos with Firefox but not Chrome?

  • 3 replies
  • 1 has this problem
  • 15 views
  • Last reply by FredMcD

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The main reason I still use Chrome is to keep my laptop fan from turning on when I watch YouTube videos. This then leads me to use Chrome for other reasons as well. I would prefer to use Firefox, but I don't like it when my fan turns on. My Firefox is up to date according to me preferences page.

I have tried unchecking "Use hardware acceleration when possible" and restarting Firefox, but the fan still comes on.

What's the solution?

All Replies (3)

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The fan keeps the circuit board from burning up. That means CPU.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

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The fan is still coming on. If Firefox uses too much CPU how do I change it?

Is this different from using too much RAM? I thought Chrome used more CPU (or whatever uses up GBs/storage), that's why Firefox was recommended.

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Let's start with the fan first. In most computers today the fan is controlled by a thermostat inside the case. Too hot = fan on. Okay = fan off.

Sometimes, there is a problem with the fan itself. Sometimes the air vents get clogged. Get a can of compressed air and blow out the vents.

Place your hand over the exhaust vent. Is it blowing out okay?


Geisshardt63 said

The main reason I still use Chrome is to keep my laptop fan from turning on when I watch YouTube videos

Is this the only time the fan gets a workout?