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I did the same test on my M1 Air. Safari is using 40% CPU while Firefox is 55%. Not sure why there's such a large difference between your results and mine.
by fzil 5y ago
I did the same test on my M1 Air. Safari is using 40% CPU while Firefox is 55%. Not sure why there's such a large difference between your results and mine.
- ziftface 5y agoMaybe it's running on a low power core?
- scoopertrooper 5y agoAnother M1 datapoint, Chrome: ~20% Safari: ~35% Firefox: ~45%
- zapt02 5y agoMy guess is that the OP doesn't have hardware acceleration for Firefox on his GPU configuration. You probably don't either with your numbers. I have about 3-4% CPU usage on GitHub.com using Firefox, and my GPU is at about 20% load from the 3D being drawn.
- fzil 5y agoafter reading your comment I checked again and realized that activity monitor has a column for %GPU as well under the CPU tab. So here's the eyeball average after watching the GitHub page for about a minute. Firefox 88 (no extensions, private mode): CPU% 55 (avg) 61 (peak) GPU% 65 (avg) 77 (peak) Safari (no extensions): CPU% 33 (avg) 40 (peak) GPU% 33 (avg) 40 (peak) <- same numbers for both CPU and GPU in safari.