Anand knows more than we do about the A6

Discussion in 'iPhone' started by pgiguere1, Sep 14, 2012.

  1. pgiguere1 macrumors 68020

    pgiguere1

    Joined:
    May 28, 2009
    Location:
    Montreal, Canada
    #1
    Anand Shimpi from Anandtech has been pretty confident since the iPhone 5's announcement that the A6 uses Cortex A15 cores, but it's been unclear why. This guy is known to provide pretty accurate analysis/predictions and doesn't usually just state speculation as facts unless he's sure of his claims, and as you may already know, Anand knows his stuff.

    Turns out Anand apparently has some exclusive info on the A6, judging by the latest tweets on his personal Twitter account (@anandshimpi).

    [​IMG]

    He has some proofs the A6 uses Cortex A15 cores, but they'll have to wait until later.

    The other two possibilities people considered to get such a performance gain with the A6 over the A5 were:

    1) The A6 is a 32nm A5 with a much higher clock speed
    2) The A6 is a 32nm quad-core A5

    The first one is completely improbable given the fact that the iPhone 5 has a better battery life than the 4S even with an only marginally better battery capacity and the use of a larger display and LTE. To have an A5 running at around 1.6GHz would completely destroy battery life, even with a 32nm die shrink. Also, notice how Apple themselves are saying that the A6 is more efficient than the A5:

    [​IMG]
    [​IMG]

    An A5 overclocked by 100% is certainly not an efficient solution.

    The second possibility was also pretty improbable just from a marketing standpoint. We all know Apple would have made a big deal out of quad-core, just like they made a big deal out of the A5's two cores and the A5X's 4 GPU cores. But if that wasn't enough of a proof, Anand confirmed it wasn't technically possible either following Apple's speed increase benchmarks:

    [​IMG]

    The specific tasks Apple cited to compare the speed increase over the 4S's A5 would have insignificant speed gains due to the inclusion of additional cores at a similar clock speed, according to Anand, since they aren't tasks that take real advantage of multi-threading.

    [​IMG]

    Those are however not 100% solid proofs, and we can't make a final conclusion with the details we currently know, but it seems like Anand would get in trouble if he revealed more of what he knows, whatever it is. This is still pretty much as close of a proof that the A6 is Cortex A15-powered that we'll get until the inevitable teardown following the iPhone 5's release.
     
  2. Craiger macrumors 6502a

    Craiger

    Joined:
    Jul 11, 2007
  3. Anti-Lucifer macrumors 6502a

    Joined:
    Mar 9, 2012
  4. Big.Mac.Daddy macrumors 6502a

    Joined:
    Jun 5, 2012
    #5
    Anand is the best and ONLY source of scientific testing / analysis of smartphones. He would be the only one that I trust 100% no questions asked.
     
  5. Captainobvvious macrumors 6502

    Joined:
    Jun 15, 2010
    #6
    So is this news GOOD news?

    I have no idea what that means.
     
  6. Tom8 macrumors 6502a

    Joined:
    Oct 28, 2010
    #7
    Apple is going to be the first company to ship a product with a chip in it (A15) which has smoke absolutely every competitor, even the 1.4Ghz chip in the Samsung Galaxy Note.
     
  7. pgiguere1 thread starter macrumors 68020

    pgiguere1

    Joined:
    May 28, 2009
    Location:
    Montreal, Canada
    #8
    Yes, Cortex A15 is the very best CPU architecture we could hope for, and that would make the iPhone 5 the first device to use it and (probably) the most powerful mobile device on the market for a while.

    Considering that iOS is pretty resource-efficient and that iPhones usually have better real-world performances for similar specs compared to competing smartphones, that would make the iPhone 5 a real beast.
     
  8. zbarvian macrumors 68010

    Joined:
    Jul 23, 2011
    #9
    Awesome stuff. I'm stoked, and I really hope he's right.
     
  9. Battlefield Fan macrumors 65816

    Battlefield Fan

    Joined:
    Mar 9, 2008

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