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Thread: ARM Cortex-A15 vs. NVIDIA Tegra 3 vs. Intel x86

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  1. #1
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    Default ARM Cortex-A15 vs. NVIDIA Tegra 3 vs. Intel x86

    Phoronix: ARM Cortex-A15 vs. NVIDIA Tegra 3 vs. Intel x86

    Last week I shared some early benchmarks of the Samsung Chromebook while running Ubuntu Linux. The Samsung Chromebook is very interesting since it's one of the few readily available computers on the market employing an ARM Cortex-A15 processor rather than Cortex-A9 or other models. The Cortex-A15 found in the Samsung Exynos 5 Dual SoC proved to be very powerful and this Chromebook was quite a good deal with it being trivial to load Ubuntu Linux (and other distributions) while costing only $250 USD for this ARM-based laptop. In the past week I have carried out additional ARM Cortex-A15 benchmarks, including a comparison of its performance the the NVIDIA Tegra 3 quad-core ARM "Cardhu" tablet and several Intel Atom/Core x86 systems.

    http://www.phoronix.com/vr.php?view=18202

  2. #2
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    This is what it should have been from start. I used phoronix-test-suit to compare your benchmarks with mine (Core i3) to figure out the difference and I should say that ARM has come a long path. With Cortex A5X I think we will see something in the range of core series of Intel.

    A suggestion: I know that you need some clicks to make enough funds to keep up your very good work (and I am grateful), but I really think you need to expand your reviews to be more through like Anandtech. One have to read a lot of your articles to grasp the idea of what is going on "in a single matter". In that case your site will be more worthy of citations! This way it is more of a go to phoronix and try to find the thing that you are looking for. Which most people won't.

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    That makes a quad-core A15 almost competitive with low-end Intel where massive parallelisation is possible, and probably significantly better for battery life. Can't wait to see how the ARM v8 cores compare.

  4. #4

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    Quote Originally Posted by mmrezaie View Post
    A suggestion: I know that you need some clicks to make enough funds to keep up your very good work (and I am grateful), but I really think you need to expand your reviews to be more through like Anandtech. One have to read a lot of your articles to grasp the idea of what is going on "in a single matter". In that case your site will be more worthy of citations! This way it is more of a go to phoronix and try to find the thing that you are looking for. Which most people won't.
    That simply won't happen. Aside from needing the extra clicks due to ads to keep going, AnAndTech also has a much larger staff where they can devote more time to each article... Meanwhile, I single-handedly bang out every article on Phoronix.

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    This is really interesting. I wonder how the Apple A6 would do since it's after all the most powerfull ARM soc today. But I guess that would be difficult to test unless PTS is ported to iOS.

    If I remember correctly the Exynos 5 has a TDP of 4 W compared to the Atom D525's 13 Watt, and yet the Exynos 5 is mostly faster. And again, it's not even the fastest ARM soc available. This is after Intel has spent several years developing the atom. I can't help to think that perhaps the x86 is too complex to ever be really power efficient.

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    Quote Originally Posted by nej_simon View Post
    This is really interesting. I wonder how the Apple A6 would do since it's after all the most powerfull ARM soc today. But I guess that would be difficult to test unless PTS is ported to iOS.

    If I remember correctly the Exynos 5 has a TDP of 4 W compared to the Atom D525's 13 Watt, and yet the Exynos 5 is mostly faster. And again, it's not even the fastest ARM soc available. This is after Intel has spent several years developing the atom. I can't help to think that perhaps the x86 is too complex to ever be really power efficient.

    It's only 2.5Wp.

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    Quote Originally Posted by artivision View Post
    It's only 2.5Wp.
    How do you know exynos5250 tdp?

  8. #8
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    Quote Originally Posted by nej_simon View Post
    I wonder how the Apple A6 would do since it's after all the most powerfull ARM soc today.
    This info is being spread all over teh Internets but I'm not sure what the original source is. It could have been that initial AnandTech flub at the iPhone 5 launch.

    But the A6 is about equivalent to what Qualcomm was shipping for a year with their Krait-based Snapdragon S4s.

    And there's no way an A6 is in the same league as a Cortex-A15 anything.

  9. #9
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    Quote Originally Posted by johnc View Post
    This info is being spread all over teh Internets but I'm not sure what the original source is. It could have been that initial AnandTech flub at the iPhone 5 launch.

    But the A6 is about equivalent to what Qualcomm was shipping for a year with their Krait-based Snapdragon S4s.

    And there's no way an A6 is in the same league as a Cortex-A15 anything.
    Well I can't see any sources in your post either. Or any explanation why the anantech benchmarks would be unreliable. More benchmarks have been made since the iPhone 5's launch btw, for ex. the A6X used in the new iPad quite easily beats both the A15 and S4 in GPU benchmarks. But perhaps these are a flub too?

  10. #10
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    Michael, to test the PPW, try using a CLI tool like dpms or xset to turn off the displays and calculate the power difference. I know there are other pieces of hardware like the motherboard that will increase wattage but overall that might be a 5W difference, which you can just inform readers.

    Anyways, so much for Otellini's dismissive behavior of ARM. I knew his attitude was naiive.

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