Google's Chrome Browser Gets 'Highest Score Ever' on Speedometer Performance Test

Google today announced that its Chrome browser has received the "highest ever score" on the Speedometer 3 benchmarking test. Speedometer 3 is designed to measure browser performance, and it was created collaboratively by Google, Apple, Intel, Microsoft, and Mozilla.

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The test is designed to measure web responsiveness through several workloads like HTML parsing, JavaScript and JSON processing, pixel rendering, CSS application, and more.

Optimizations that Google has implemented over the last year have brought a 10 percent improvement in performance since August 2024, which Google says leads to better browser experiences for end users.

The team heavily optimized memory layouts of many internal data structures across DOM, CSS, layout, and painting components. Blink now avoids a lot of useless churn on system memory by keeping state where it belongs with respect to access patterns, maximizing utilization of CPU caches. Where internal memory was already relying on garbage collection in Oilpan, e.g. DOM, the usage was expanded by converting types from using malloc to Oilpan. This generally speeds up the affected areas as it packs memory nicely in Oilpan's backend.

On an M4 MacBook Pro with macOS 15, Chrome 139 achieved a score of 52.35 on the benchmarking test. More detail on the optimizations that were added can be found in Google's blog post.

Apple has not recently shared its maximum Speedometer 3 test results for Safari so there isn't a direct comparison available, and it is worth noting that Google appears to have used Speedometer 3, and not the newer Speedometer 3.1 test.

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Top Rated Comments

DHagan4755 Avatar
22 weeks ago
But it consumes energy like a drunken sailor compared to Safari.
Score: 25 Votes (Like | Disagree)
jontalk5 Avatar
22 weeks ago
I switched from Chrome to Firefox when I upgraded to the Mac Mini M1 and find it extremely fast and have it on my phone as well..I also moved from Google to Duck Duck Go for search engine and see little if any difference from Google AND its not impacting my YT either
Score: 15 Votes (Like | Disagree)
gravage Avatar
22 weeks ago
What score does it get on adblocking? That's all I care about and that's why I don't use it.
Score: 15 Votes (Like | Disagree)
SnowPenguin Avatar
22 weeks ago
Nice, since us Brave users will likely get that performance boost as well, but with better privacy.
Score: 13 Votes (Like | Disagree)
justanotherdave Avatar
22 weeks ago
Don’t care how fast it is, nothing will get me to use that vacuum cleaner data mining software.
Score: 13 Votes (Like | Disagree)
Slo Pesci Avatar
22 weeks ago
I try Safari and Firefox like every year but I still keep coming back to Chrome. Just works 99% perfect.

Safari on iPad tho since extensions will work.
Score: 10 Votes (Like | Disagree)