iPhone 5 Javascript Benchmarks Over Twice as Fast
AnandTech publishes the first SunSpider Javascript benchmarks for the iPhone 5. SunSpider measures Javascript performance which runs in web browsers.
Smaller numbers are better, so the final score of 914.7ms is better than all of the other devices on the chart and is the fastest SunSpider test they've ever recorded for a smartphone. The iPhone 5 is two and a half times as fast as the iPhone 4S (2250ms) and notably faster than the Samsung Galaxy S III (1442.9-1824.9ms).
Javascript is used as a measure of web browser performance, but the final score can be impacted by both the processor as well as the particular Javascript implementation on the device. Javascript is a common area of optimization due to its common usage on websites and may have been improved in iOS 6 which ships with the iPhone 5. AnandTech notes that the superior performance is likely a reflection of the Apple A6's improved memory subsystem.
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http://www.macrumors.com/2012/09/19/iphone-5-javascript-benchmarks-over-twice-as-fast/
