Firefox 149 vs. Chrome 147 Web Browser Performance On Linux
Firefox picked up wins in the MotionMark and StyleBench browser benchmarks. Google Chrome meanwhile continued to dominate in the JavaScript heavy benchmarks. With the brand new JetStream 3 benchmark. Chrome came in at 1.47x the performance of Firefox in these modern Linux desktop benchmarks using Intel Panther Lake hardware. In some of the WebAssembly benchmarks was at least some healthy competition between Firefox and Chrome on Linux.
Across the web browser benchmarks, the Core Ultra X7 358H power consumption came in at 11.44 Watts on average for Chrome and 11.74 Watts for Firefox. Quite close.
The slight CPU power difference may come down to the CPU usage with Chrome coming in slightly lower at 8.13% on average to 8.35% with Firefox.
Chrome also came in at slightly lower memory consumption across all the benchmarks with total memory usage on average at 4.67GB to Firefox at 4.83GB.
That's a fresh look at how Mozilla Firefox and Google Chrome are competing on the Linux desktop in 2026.
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