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Does HTML5 Really Beat Flash? The Surprising Results of New Tests

posted Mar 11, 2010, 6:40 AM by Dan Luk

Ladies and gentlemen, start your FLASH engine.

Mac Tests

  • With Safari, HTML5 was the most efficient and consumed less CPU than Flash using only 12.39% CPU. With Flash 10.0, CPU utilization was at 37.41% and with Flash 10.1, it dropped to 32.07%
  • With Google Chrome, Flash and HTML5 were both equally inefficient (both are around 50%)
  • With Firefox, Flash was only slightly less efficient than in Safari, but better than in Chrome
Windows Tests
  • Safari wouldn't play HTML5 videos, so there was no way to test that. However, Flash 10.0 used 23.22% CPU but Flash 10.1 only used 7.43% CPU
  • Google Chrome was more efficient on Windows than Mac. Playback with Flash Player 10.0 was about 24% more efficient than HTML5, while Flash Player 10.1 was 58% more efficient than HTML5.
  • On Firefox, Flash 10.1 dropped CPU utilization to 6% from 22% in Flash 10.0
  • In IE8, Flash 10.0 used 22.41% CPU and Flash 10.1 used 14.62% CPU
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