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So far, we've only got to evaluate the performance of the I9505 Galaxy S4 (http://www.gsmarena.com/samsung_i9505_galaxy_s4-5371.php), which is powered by the Snapdragon 600 chipset. SamMobile on the other hand were lucky enough to fiddle with the Exynos 5 Octa variant of the Galaxy S4 and make it sweat in some synthetic benchmark tests.

The tests in question are AnTuTu and Quadrant, both being all-round suites that gauge pretty much every component of the device - CPU, GPU, RAM, storage, etc. As you'd imagine the quad Cortex-A15s don't disappoint and posted amazing scores beating every device we have seen so far.

•    
  AnTuTu Higher is better
  
  
  • Samsung I9500 Galaxy S4
    
    27417
  • Samsung I9505 Galaxy S4
    
    23607
  • HTC One
    
    22678
  • Sony Xperia Z
    
    20794
  • LG Optimus G Pro
    
    20056
  • HTC Butterfly
    
    19513
  • Samsung Galaxy S III
    
    15547
  • Oppo Find 5
    
    15167
  What we noticed from a screenshot of the AnTuTu benchmark was that the frequency of the CPU is reported as 1.8GHz. Samsung announced the Octa 5 Exynos variation of the Galaxy S4 is running at 1.6GHz for the Cortex-A15 cores and 1.2GHz for the Cortex-A7 cores. It could be possible that the market version of the device to arrive a bit more beefed than what Samsung's initial announcement suggested.
  
  
  Quadrant Higher is better
  
  
  • Samsung I9500 Galaxy S4
    
    12726
  • LG Optimus G Pro
    
    12105
  • Samsung I9505 Galaxy S4
    
    12028
  • HTC One
    
    11746
  • Sony Xperia Z
    
    8075
  • HTC One X+
    
    7632
  • LG Optimus G
    
    7439
  • Oppo Find 5
    
    7111
  • HTC One X
    
    5952
  • Samsung Galaxy Note II
    
    5916
  • Samsung Galaxy S III
    
    5450
  • Meizu MX 4-core
    
    5170
  • Nexus 4
    
    4567
  In case you're wondering, you can check out  (http://www.gsmarena.com/samsung_galaxy_s4_to_ship_with_snapdragon_600_in_the_uk-news-5735.php) in which countries Samsung is going to launch the Exynos 5 Octa and Snapdragon 600 editions of the Galaxy S4.
  
  Source (http://www.sammobile.com/2013/03/27/samsung-galaxy-s4-user-interface-walkthrough/)

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