Several new web browser versions have been released in the last days which made it important to benchmark the latest official versions and the latest development versions of Firefox, Google Chrome, Safari, Internet Explorer and Opera to see how the browsers compare to each other. All browsers were installed on a Windows XP Service Pack 3 test system.
The browsers were tested running the SunSpider JavaScript Benchmark, Kane’s Web Browser Javascript Benchmark and the Acid 3 test. Feel free to run the tests with your web browsers but note that results will vary as the computer’s hardware influences the test on different systems.
The only way to compare results is by running the tests on the same computer system using the same environment. The first two tests are testing the JavaScript engine of the web browser while the Acid3 test is a web standards test.
SunSpider JavaScript Benchmark (Less is better, time in ms)

Kane’s Web Browser Javascript Benchmark (Less is better, time in ms)

Acid 3 Test (more is better, max is 100)

All values:

Google Chrome managed to beat the competition in both Javascript tests. Opera 10 Alpha on the other hand was the only browser that scored a perfect score in the Acid 3 web standards test.
Internet Explorer 7 was last in all three tests. Microsoft has made advancements in Internet Explorer 8 Beta 2 but is still way behind in comparison to the other web browsers.
Related posts:
- Test Your Browser’s JavaScript Performance
- Internet Browser Benchmark PeaceKeeper
- Browser Security Test
- Web Browser Memory Usage Benchmark Gets It All Wrong
- 2008 will be an interesting year Browser wise
- Opera and Webkit pass Acid3 test. Does anyone care ?
- Are you running the latest browser version?
- Which Web Browser Will You Be Using In 2010?

Thanks for the review buddy, though you wont believe it but i’ve all them installed in my pc, and i even run opera mini and ucweb too, through j2me emulator, for saving some bandwidth! ;-)
The tests would have been more useful if they would have included a version of Internet Explorer (not Windows Internet Explorer) such as Internet Explorer with SP1.
I’m satisfied with Firefox speed. It may be not the fastest, but very comfortable with right extension set :)
If you included Opera 10 Alpha… then why didn’t you included the latest release of the WebKit? The WebKit scores 100% on Acid3 as well and offers many speed improvements.
Now… if only we can start a revolution against Microsoft over the lack of progress with IE8 – i mean… they are single handily crippling the internet.
The test are done by GHacks or not?
lastest alpha version of safari also scores 100 on acid3, as said Michael.
Except for the speed, which browser use less memory? Have an old laptop with only 186 Mb ram and running XP. A heavy browser makes the computer swap programs to the hard disk.
“If you included Opera 10 Alpha… then why didn’t you included the latest release of the WebKit?”
Because WebKit is not a browser as such. And the list already includes two WebKit browsers.
“Except for the speed, which browser use less memory? Have an old laptop with only 186 Mb ram and running XP.”
Opera is definitely the browser for you.
Windows XP -Minefield, Build 20090425043745
Sunspider: Total: 989.8ms +/- 0.4%
Kane’s: 244ms
Acid 3: 90