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macrumors regular
Original poster
Jul 7, 2022
165
270
Can someone please explain to me this claim that jet stream is both 1.8x faster on macOS and 2x faster than windows 10 browsers even though firefox is 1.0 on both and the browsers are slower on macOS? It doesn't make sense. jet stream speed comparison
 

gilby101

macrumors 68030
Mar 17, 2010
2,921
1,616
Tasmania
In the comparison with Firefox:
There are two baselines: Firefox on macOS in left hand column and Firefox on Windows in the right hand column.
Safari on macOS is 1.8x as fast as Firefox on macOS. Safari on macOS is 2.0x as fast as Firefox on Windows.
Chrome/Edge on macOS is 1.5x as fast as Firefox on macOS. Chrome/Edge on Windows is 1.6x as fast as Firefox on Windows.
The numbers suggest to me that in this test, the Windows computer is slightly less powerful than the Mac computer. And, of course, that Safari is the best browser!

Makes sense. And read the footnote which specifies the hardware used.

Whether it is a useful comparison is another matter.
 

DeltaMac

macrumors G5
Jul 30, 2003
13,750
4,574
Delaware
?
Firefox is used as a baseline on both, so the ratio is adjusted for Firefox (as the baseline)
The actual speed of the javascript benchmark is not shown, but the adjustment is to make Firefox as the baseline, and then a ratio is shown, comparing the other browsers. The results shows that Safari has a faster javascript performance, compared to browsers on both platforms.
As the actual speeds are not shown - other than "It's faster!", and no test of Safari natively on Windows (no current Windows version of Safari), I'm not sure that you can draw a conclusion that Safari is faster than browsers on both platform.
But - a moot point, anyway -- that info is out of date, so today's result from the same testing could be very different.
 
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