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  • flumoxed11 flumoxed11 Nov 8, 2012 3:23 PM Flag

    Can ARM cpus match Intel's Performance/watt ??

     

    I think it's you who doesn't understand fractions. INTC power performance is now comparable to ARMH in similar applications. Their performance/speed of logic functions, eg flops (floating point per second operations or machine executions) is infinitely better.
    That's why we are seeing so many attacks on INTC. The watershed has been reached. No one can now touch INTC in this space, ever again. Believe me, those who know anything are losing sleep at AAPL (not clear mgmt does).

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    • I think it's you who doesn't understand fractions. INTC power performance is now comparable to ARMH in similar applications. Their performance/speed of logic functions, eg flops (floating point per second operations or machine executions) is infinitely better.
      -----

      Perhaps an example would help?

      lowpowerserversDOTcom/?p=141

      So that’s a throughput difference of ~14x between the dual E5-2620 (24t) and the 4core Viridis SoC.

      Looking at power, an estimate of the energy required to do 6 repetitions:

      Viridis = 7W * 12:18m * 6runs =~ 31kJ
      x86 = 200W * 5:18m * 6/6 (all runs simultaneous ) =~ 64kJ

      The ARM system is about twice as power efficient as the x86. It might be low power, but it takes a long time getting to the end.

 
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