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ARM Cortex-A15 Quad-Core Linux ODROID-XU Tests

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  • #16
    Originally posted by Krysto View Post
    So far Bay Trail is barely competing with last year's dual dual core Cortex A15 and ARM GPU's:

    http://images.anandtech.com/graphs/graph7428/59065.png

    http://images.anandtech.com/graphs/graph7428/59075.png

    I've stopped buying Intel's BS a long time ago. Wait until the reviews are out instead of believing Intel a year before the release about how their chips about how their new chips will totally destroy ARM chips. When they come out they tend to only be competitive with chips from a year before, in both CPU, and especially in GPU performance.
    How's Bay Trail graphics support under Linux? Any real world reviews on it? I know it's based on the HD4000 but actual tests would be great. Thanks!

    Edit:
    At least their boasting against previous generation Atoms weren't too much of a lie:
    http://images.anandtech.com/graphs/graph7428/59050.png

    Of course that shows how behind the Atom was against ARM in the first place.
    Last edited by guido12; 10-22-2013, 11:52 AM.

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    • #17
      Originally posted by Krysto View Post
      I've stopped buying Intel's BS a long time ago. Wait until the reviews are out instead of believing Intel a year before the release about how their chips about how their new chips will totally destroy ARM chips. When they come out they tend to only be competitive with chips from a year before, in both CPU, and especially in GPU performance.
      ARM CPUs are usually useless with Linux because of bad GPU drivers. ARM CPU would be useful only if Intel would produce ARM CPU like A57 or A53 with Intel GPU.
      Last edited by JS987; 10-22-2013, 12:01 PM.

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      • #18
        Originally posted by JS987 View Post
        ARM CPUs are usually useless with Linux because of bad GPU drivers. ARM CPU would be useful only if Intel would produce ARM CPU like A57 or A53 with Intel GPU.
        I have some hope with Nvida Tegra SoCs. Because ulike the desktop GPU family, the ARM family drivers are free/open. So I hope that NVIDIA Tegra will become the de facto standart for Linux Arm.

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        • #19
          Originally posted by Krysto View Post
          So far Bay Trail is barely competing with last year's dual dual core Cortex A15 and ARM GPU's:
          http://images.anandtech.com/graphs/graph7428/59065.png
          http://images.anandtech.com/graphs/graph7428/59075.png
          ASUS Transformer Book T100 has slower Z3740 (1.86 GHz) instead of Z3770 (2.39 GHz):
          http://anandtech.com/show/7314/intel...z3770-tested/2
          http://anandtech.com/show/7314/intel...z3770-tested/3
          Z37x0 are quad cores, but most of these benchmarks probably don't scale with more cores

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          • #20
            Originally posted by schmidtbag View Post
            I still have a hard time understanding the purpose of the big.LITTLE architectures, or other similar platforms such as OMAP5.


            Anyway, I own an odroid-U2 and it's a pretty fantastic platform. I wish there was openGL acceleration (rather than OGL ES) but it being a quad core makes up for the performance hit it takes for having the CPU render everything.
            Re: The purpose of big.LITTLE: Power consumption is a concern for designers of ARM systems. If I recall correctly, big.LITTLE systems address this by using the slower low-power cores when the load is low and then switching to the high-performance cores when the load requires it. I believe this is also the reason for why the cores have to be paired - processes need to be transferred from the low-power cores to the high-performance cores seamlessly. I think that's also the only time when all of the cores are in operation; otherwise, either the A15 cores or the A7 cores are running, not both sets.

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            • #21
              If you follow LWN, the OS can decide what to do with big.LITTLE. It can use it as intended - as a paired quad - or treat it as a real octa. Linux has code being written for both, so in the future you can choose.

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