. The new benchmark tool adds five new tests to Google's V8 Benchmark Suite
that are supposed to reflect modern browser use — tasks like loading PDF files are joined by emulating a Gameboy's architecture to run a 3D demo. Google hopes to supplant popular tools like SunSpider, claiming that existing benchmarks rely on antiquated, artificial tests, and don't accurately reflect what a user is doing on the modern web.
Octane delivers a score that aims to rank browser performance across all platforms, but it's hard to place real-world meaning to the results until we spend more time observing how they line up with our own feelings of browser performance. For what it's worth, in our unscientific battery of tests on a 2011 Macbook Air Chrome version 21 earned an average of about 9,700, while Safari 6 earned an average of about 7,000 (higher is better).