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HTML5 Mobile Performance Lags Way Behind Laptops

A new set of performance benchmarks have shown that HTML5 runs a great deal slower on mobiles than it does on laptops.

Obviously a laptop is always going to be much more powerful than a small smartphone, but the PerfMarks II Report, issued by, found a surprising gulf between the two classes of device.

The PerfMarks II Report tests gaming performance, measuring the amount of moving images a device can handle while maintaining a relatively smooth 30 frames per second. 60 frames per second is, of course, the ideal benchmark for totally smooth graphics, but 30 is certainly playable enough.

Running HTML5 on high end handsets such as the iPhone 4S and Galaxy Nexus, these devices were found to be six to ten times slower than a contemporary laptop - and that's at best. notes that this puts a big question mark over whether the current crop of smartphones can handle more complex HTML5 games. These might not be playable on mobiles for quite some time yet, the results suggest.

The various battery of tests the firm conducted showed that iOS outperformed Android, with the iPhone 4S six times slower than a modern Mac notebook. The top Android smartphone, the Galaxy S II (which beat out the Nexus), ran HTML5 ten times slower. founder Ben Savage commented: "Cross platform mobile application development is currently the holy grail of the industry, seeking to move beyond the walled gardens of app stores."

"Although HTML5 is getting faster over time, the performance on mobile devices and browsers is still sorely lacking for the development of more complex applications. This PerfMarks report will help both browser creators and app developers know what to push for in terms of HTML5 technology necessities."