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posted by martyb on Tuesday May 30 2017, @05:28AM   Printer-friendly
from the More-Moore? dept.

ARM has announced two new CPU cores, the Cortex-A75 and Cortex-A55. According to ARM, the A75 increases performance by around 22% over the A73 at the same level of power consumption. It can also scale to use more power per core (1-2 W rather than 0.75 W) which could slightly improve the performance of ARM laptops and tablets.

The smaller core, the Cortex-A55, increases performance by around 18% compared to the Cortex-A53, but also increases power consumption by 3%. Thus, power efficiency is about 14-15% better than the A53.

ARM's successor to big.LITTLE, DynamIQ, allows for up to 8 cores of any size (which for now means either the A75 or A55) inside of a single cluster. This means that a configuration including 1x Cortex-A75 and 7x Cortex-A55 cores would be possible, or even optimal according to ARM.

ARM also announced its Mali-G72 GPU, an incremental upgrade to the Mali-G71:

ARM says that the Mali-G72 will see a 25 percent boost to energy efficiency compared with the G71, meaning that SoC designers will have more power to play with to boost performance or increase battery life.

Similarly, the G72 offers 20 percent better performance density, meaning that manufacturers can pack more GPU cores into the same die area as before, giving further potential for a performance boost without an increase in cost. Previously ARM was targeting 16 to 20 Mali-G71 cores as the optimum for mobile, and expects to see the number push closer to the 32 shader core maximum supported by the G72 this time around.


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  • (Score: 1, Informative) by Anonymous Coward on Tuesday May 30 2017, @11:46AM (4 children)

    by Anonymous Coward on Tuesday May 30 2017, @11:46AM (#517592)

    I mean, at the driver level. ARM is not the way forward for FOSS computing.

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  • (Score: 0) by Anonymous Coward on Tuesday May 30 2017, @01:41PM

    by Anonymous Coward on Tuesday May 30 2017, @01:41PM (#517622)

    screw arm and mali. we need risk or similar.

  • (Score: 0) by Anonymous Coward on Tuesday May 30 2017, @08:15PM (2 children)

    by Anonymous Coward on Tuesday May 30 2017, @08:15PM (#517870)

    Enjoy the reading http://libv.livejournal.com/27461.html [livejournal.com] ARM is against FOSS even if it would mean simpler support and more sales. And when reverse engineering was tried, many sticks were pushed into wheels by others in the comunity. We could be using LIMA and TAMIL for some years.

    Radeon FOSS driver start is also full of sticks. http://libv.livejournal.com/27799.html [livejournal.com]

    Companies love to spoil what they get.

    • (Score: 0) by Anonymous Coward on Tuesday May 30 2017, @09:08PM (1 child)

      by Anonymous Coward on Tuesday May 30 2017, @09:08PM (#517886)

      > ARM is against FOSS even if it would mean simpler support and more sales.

      You base this on one single blog post that actually has a lot of bias.
      Though at least that blog post reference the video of an interview that explains things a bit differently.
      Anyway as stated it's wrong, ARM certainly contributes back to several FOSS projects, even more so if you include contributions by Linaro.
      Admittedly you can probably consider them all driven by pure self-interest, but still it proves your statement as-is certainly as untrue.
      Also the kernel part of the driver to my knowledge is OpenSource (GPLv2), which would make ARM GPUs more OpenSource from the vendor side than NVidia desktop GPUs for example...

      • (Score: 0) by Anonymous Coward on Tuesday May 30 2017, @09:54PM

        by Anonymous Coward on Tuesday May 30 2017, @09:54PM (#517910)

        What driver to use Mali GPUs? One that links a binary blob you get by means of the commercial SDK? Pretty much the same trick NVidia uses with the kernel and keeps the rest closed. The most they seem to provide is open 2D. Like if this was the 90s.

        If they were barely friendly, they would not declare they don't want a FOSS full driver for the Mali and newer. Friendly would mean sending docs or hints when issues appear. They must be making money hand over fist with the SDK to be so negative about other efforts.