Hi!

Have you compared the memory and processor consumption of both browsers? Maybe it's some add-on consuming more cycles than it should? Are you comparing them with the same amount of tabs and similar pages opened?

I'm using the same configuration as you do and I haven't noticed a particular degradation in the battery life.

Best, Ibai

Try to disable hardware acceleration in Firefox.

• Firefox > Preferences > Advanced > General > Browsing: "Use hardware acceleration when available"
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Hi. So, I tried turning off hardware acceleration and took a look at Activity Monitor. Firefox with only 1 tab with google search, same for Safari 6. CPU for FF 0,5% for Safari 0%. Threads: FF 28, Safari 18. Strange behaviour for a simple tab with google.com, right. Not to mention the RAM utilisation where Safari shows 175MB and FF 320MB. Should I try the profile test mentioned above? Thanks.

Yes, you can give a new profile a try if you can't find a cause in your current profile folder.

I tried the reset firefox option and apparently battery consumption seems normal. Thanks to everybody who helped.