Hey everone, first time poster here with a question about Apple's A9X SoC/M9 Coprocessor

John9l0

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Dec 11, 2015
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Hello everyone, I was just wondering if anyone inform me as to why having the M9 coprocessor integrated onto a the A9X is more efficient and saves more power than if it weren't integrated directly onto it.

Thank you
 

nikita787

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Nov 3, 2012
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Well, putting the m9 coprocessor directly onto the die saves more power because it doesn't require a dedicated chip to do the work, it's embedded directly onto the CPU. The architectural changes during the transition also makes it more efficient because they have to design it so the TDP of the A9x doesn't get too high.
 

John9l0

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Dec 11, 2015
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Wow, thank you for the fast answer. So would you say another factor is that currents don't have to travel as far compared to if it were on it's own dedicated chip? I'm a hardware noob who is doing a presentation in this hardware class for IT students and I wanted to include what exactly makes this integration more efficient.