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Intel Corporation Message Board

  • theblueredmonk theblueredmonk Aug 10, 2011 3:45 AM Flag

    Will tri-gate play key role in Intel-ARM tussle

    At the moment, it certainly looks as though ARM will go planar at the 22-nm node, while Intel will go tri-gate. To judge if tri-gate offers Intel a significant advantage, a few questions need to be answered:

    • Intel announced that their 22-nm tri-gate transistor consumed 50 percent lower power when compared to their 32-nm planar transistor. But what are the power savings for a 22-nm tri-gate transistor when compared to a 22-nm planar transistor?
    • How much chip power can one save by using a 22-nm tri-gate transistor in a microprocessor instead of a 22-nm planar transistor? Is it 10 percent? Or is it 30 percent? Or is it 50 percent?

    It is not difficult to get estimates for these. Let’s take a look.

    http://www.eetimes.com/electronics-news/4218620/Will-tri-gate-play-an-important-role-in-the-Intel-ARM-tussle-?

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    • gregory.lynn@rocketmail.com gregory.lynn Aug 10, 2011 5:04 AM Flag

      Which Intel processor was he comparing to which Arm processor exactly?

      I read that article, that guys is out of his mind crazy to think that power consumption and Hz are the only things that matter. It looks like he started with a conclusion (Arm wins), and then found some software that would allow him to manipulate numbers that have nothing to do with any real metrics in processing power such as instructions per second or floating point operations per second.

      It does show off how Tri-gate helps with power consumption though, but again this isn't the only metric that matters.

      • 1 Reply to gregory.lynn
      • Which Intel processor was he comparing to which Arm processor exactly?

        I read that article, that guys is out of his mind crazy to think that power consumption and Hz are the only things that matter. It looks like he started with a conclusion (Arm wins), and then found some software that would allow him to manipulate numbers that have nothing to do with any real metrics in processing power such as instructions per second or floating point operations per second.

        It does show off how Tri-gate helps with power consumption though, but again this isn't the only metric that matters.
        -----

        In mobile devices power consumption (performance per watt) is one of the key design ratio's and as the article shows Tri-gate closes the gap, but not enough (in that authors view). I would go one step further and say if you had a 22nm tri-gate Atom today it would still struggle to compete (performance per watt numbers). This is more about how bad Atom is (rather than how good ARM is) and it's up to Intel's designers to do something about it...

 
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