More...The new beta of Chrome for Windows is nearly a fifth faster than its more stable sibling, but still lags behind speed leader Opera, benchmark tests show. According to tests run by Computerworld, the Chrome beta, which Google launched yesterday, is the second fastest of the major Windows browsers. Chrome 5.0.375.29 also renders JavaScript about 17% faster than Chrome 4.1.249.1064, the current "stable" edition. Google simultaneously supports three lines of Chrome, ranked in descending order of stability as its stable, beta and dev channels.