Well, I'm running it on a 7-year-old Mac mini (yeah, no battery, I know, but hold on...), and _idle_ Firefox, without focus, is ticking along at 0.7-1.5% CPU time.
Safari is zero. Dead still. I type this and it moves to 0.3%.
No idea what Firefox is doing...
edit: Also, even without focus, Firefox climbs to 8.9% CPU just by hovering my mouse over it. Safari goes to 0.2%.
Safari is zero. Dead still. I type this and it moves to 0.3%.
No idea what Firefox is doing...
edit: Also, even without focus, Firefox climbs to 8.9% CPU just by hovering my mouse over it. Safari goes to 0.2%.