10.12.2 increased battery, but throttles the computer?

Discussion in 'MacBook Pro' started by Noerdy, Dec 14, 2016.

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  1. Noerdy, Dec 14, 2016
    Last edited: Dec 14, 2016

    Noerdy macrumors member


    Dec 13, 2016
    I checked /r/apple on reddit, and a lot of people have been saying that their battery life is much better on 10.12.2, but from 1 or 2 people (which is enough to concern me) they have mentioned that the update is throttling the power on their computer. Are people here experiencing similar results? If this is true, then that is really cheap of apple. Another terrible move in this quarter. But if they actually did fix something, then +1 apple. Just want to know what your experiences were.

    EDIT: The person who posted this screenshot said he was getting the same geekbench scores, so I guess thats really good. :)

  2. montycat macrumors 6502


    Mar 19, 2007
    Im definitely getting better battery life on my new 15" MBP since the update. So yes, +1
  3. Hieveryone macrumors 68040

    Apr 11, 2014
    I'm installing the software update on my late 2013.

    Now I'm kind of waiting impatiently to see if my computer is slower or not.

    About 8 minutes left.
  4. Make Apple Great Again macrumors member

    Nov 5, 2016
    He's not asking if you are getting battery life, but rather is this software "update" just an attempt by Apple to limit the power consumption of your computer to improve battery life (by essentially not letting you use the true power of the CPU that you paid for etc).
  5. Qwaf macrumors regular

    Sep 11, 2010
  6. aioriya macrumors newbie


    Nov 27, 2016
    I'm still getting similar battery life as before the new sierra upgrade, 5 to 6.5 hours on 50% brightness, mainly browsing in safari. I've been looking at activity monitor more closely since the battery time was removed and Safari is consistently the app using significant energy and one thing to keep in mind is that some popular sites such as youtube appear to be a huge battery hog and they can bring battery life down significantly.

    Attached Files:

  7. blairian89 macrumors 6502


    Dec 5, 2016
    It was a concern of mine too, but I also have the same Geekbench scores as before...if they throttled it, those would be affected, no?
  8. dallas112678 macrumors 6502a

    Feb 17, 2008
    Depends on how they decide to throttle. For example, they don't throttle CPU's for heat until they've been going full power for so long building heat. Maybe they don't throttle immediately for power and let you get some usage out of it and then throttle it enough to get the battery life back up.

    Based off the graphs he posted, it doesn't look like it throttles immediately so it may not appear in a benchmark that runs for a short time.
  9. skids929 macrumors 6502a


    Mar 24, 2011
  10. Qwaf macrumors regular

    Sep 11, 2010
    I've run Handbrake for long periods and it has stayed pegged at its max clock, others have reported benchmarking with handbrake before and after and getting pretty much the same time (few seconds difference). Where is this talk about them throttling coming from? Is there any evidence for it?
  11. a4k04 macrumors member

    Nov 10, 2016
    I posted this same thing on reddit (not sure if you saw my post or another) where I compared a 1080p 2 hour, 11 minute conversion from MKV to M4V with the default "High Profile" handbrake setting before and after the software update. The before test was run about 2 weeks ago when I was comparing performance to my old machine so the comparison wasn't immediately before and immediately after the update but it's still valid. Both tests were run on battery (also was testing how much a max CPU process hit the battery between my old vs new machine) so there's no invalidation from being connected to AC. The test from 2 weeks ago did finish faster, but only by 5 seconds (if you know anything about video conversion or multi-threading in general this 5 second difference could be explained by hundreds of different things unrelated to CPU throttling, it's an insignificant difference) The full conversion took 33 minutes and change. If there was throttling going on at max CPU load this test would have surely shown it and this whole throttling topic should surely die a quick and painless death.

    There's a million and 1 software related reasons for the increase in battery life. Not trying to minimize the battery issues people are/were having, capacity is down, but I've been consistently getting 8+ hours in Xcode, vim, and safari since day 1. I didn't migrate anything over from my old machine and there seems to be some evidence that those who used migration assistant are having more severe battery issues - with the supposed fix from 10.12.2 I'd be looking into a software fix related to migration assistant as the 'thing' that solved the problem.
  12. dgdosen macrumors 65816


    Dec 13, 2003
    I admire the healthy skepticism but whomever started this thread prior to running the exact tests shown here is pretty irresponsible. I'm glad it's documented, but this story should be nipped in the bud. Sure, I've ridiculed Apple for removing the time estimate from the battery - but IMO, wild accusations like this are undeserved and the people that start them should have their accounts banned.

    This is not right.
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