HTML5 Performance Comparison
One might think that HTML5 would clearly be superior to Flash in every way. However, numerous independent tests have been performed to compare HTML5 vs. Flash benchmarks when it comes to the most strenuous online content, like HD video. The results have been scattered. In some cases, Flash actually beats out HTML5 in terms of performance, but this has greatly to do with the computer being tested and its hardware specs, plus the nature of the content. The common factor for best performance seems to be related to hardware acceleration capabilities.
On LifeHacker.com, a tester compared HTML5 performance on Internet Explorer, Firefox, Google Chrome, and Opera. He used an aquarium simulator that lets you select how many fish are animated on screen, and the final test had a thousand total. In the end, he declared Firefox the winner by five to ten percent over Internet Explorer, and both Chrome and Opera choked on the biggest test.
These tests are good news for web developers since the majority of web surfers use Internet Explorer or Firefox, and only a very small percentage use alternate choices like Chrome, Opera or Safari. I would like to see more on tablet support as well as smartphones like the Samsung Galaxy S and other more widely used models.
While these test results show that HTML5 doesn’t exactly shut out Flash, you must keep in mind that HTML5 is still under development whereas Flash content has been around since the days of Windows 95 when the Internet as we know it was first taking off. You can bet on seeing more efficient processing of HTML5 code in order to make better use of system resources so that it offers a legitimate answer to the complaints about Flash using too many CPU cycles.