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How fast is Google Chrome really?

Last Tuesday, Google announced a new optimization technology, called Crankshaft, added to the latest version of Chrome, and that according to the company itself, significantly improves the performance of the browser.

Google engineers noted that Crankshaft achieved the highest Chrome scores, with a 50% improvement. “It’s the biggest performance increase since we launched Chrome in 2008,” explained Kevin Millikin and Florian Schneider on a browser blog.

However, the American edition of Computerworld carried out several tests with different versions of Chrome, on a PC with Windows Vista.

The latest version of Chrome, the only one that incorporates Crankshaft, was 40.5% faster than the previous edition, 8, and 43.5% than the current version, 9. The current version even showed speed improvements on previous versions of Kraken, the JavaScript created by its competitor Mozilla. Based on these tests, Chrome was 55.3% faster in performance.

However, in a third test, the Crankshaft technology proved to be slightly faster only on some fringe versions of Chrome. Thus, the SunSpider JavaScript Benchamarck test, which measures the performance of a web browser through the speed of JavaScript execution, showed that the current version was only 2.2% faster than the first version and 3.5% faster than the previous version.

SunSpider, created by the WebKit project, has become a de facto standard for measuring JavaScript loading speed in browsers

Both Millikin and Schneider explained those small improvements made with SunSpider on their blog: “The idea (with Crankshaft) is to strongly optimize frequently executed code and not spend time optimizing code that is not. For this reason, benchmarks that finish in just a few milliseconds, such as SunSpider, show small improvements. The more work an application does, the better the profits, ”they pointed out.

Finally, in the V8 tests, Chrome was twice as fast as the current Firefox 4 beta and Opera 11. However, when compared to the Microsoft Internet Explorer 9 beta, Chrome was even five times faster. Quick.

Of course, it is important to note that JavaScript benchmarks are not the only ones capable of measuring the speed of browsers, a fact that Microsoft has repeated many times.