This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

CPU gets hot when watching videos with Firefox

  • 1 reply
  • 0 have this problem
  • 2 views
  • Last reply by zeroknight

uubadanimals
uubadanimals
more options

I monitor the temperature of my PC's CPU with a program called Core Temp. The CPU gets up to 140 degrees Fahrenheit when watching videos. Stayed between 100-115 degrees Fahrenheit when I was using Chrome. The temperature is around 98 as I write this, no video playing. Why is this?

I monitor the temperature of my PC's CPU with a program called Core Temp. The CPU gets up to 140 degrees Fahrenheit when watching videos. Stayed between 100-115 degrees Fahrenheit when I was using Chrome. The temperature is around 98 as I write this, no video playing. Why is this?

All Replies (1)

zeroknight
zeroknight
more options

Make sure you have NOT disabled hardware acceleration.

If the videos are on youtube, it may help to install h264ify.

You can try force-enabling hardware video decoding by going to about:config and changing media.hardware-video-decoding.force-enabled to true then restart the browser.