Battery Life

Battery life on the Sandy Bridge MacBook Pro improved in our two lighter workload tests by 5%, however under heavy load there was no change. Given that we only saw improvements in our two workloads with built in idle time I suspect Lion may have tweaked some power management settings vs. Snow Leopard, but nothing more. The improvements here might be limited to newer architectures or systems with Apple SSDs however, because they definitely weren't echoed on our older MacBook Pro:

The early 2008 MacBook Pro showed around a 20% decrease in battery life in our two web browsing battery life tests. Once again we saw no difference in our heavy multitasking test. Once again I'm guessing this change is due to some tinkering with OS X's behavior at idle. Our performance data above doesn't suggest any performance issues causing lower battery life on the old Core 2 Duo based MacBook Pro, so there's got to be something keeping the CPU out of its lower idle states during our tests. I checked Activity Monitor during the benchmarks and didn't see anything obvious, meaning it's likely a lower level OS issue. Our own Brian Klug theorized that the lower battery life could be due to the Core 2 Duo MacBook Pro now loading Lion's 64-bit kernel by default instead of the 32-bit kernel like it did in the Snow Leopard days.

The impact is pretty significant on the older MacBook Pro. Older mobile Mac owners dependent on battery life may want to wait to pull the trigger on Lion until at least the first point update.

I will add that something very strange happened on one of our battery life runs with the 2011 MacBook Pro. During our Flash Web Browsing battery life test we recorded a full battery rundown that took under 3 hours, instead of the ~7 hours you see above. Once again I checked Activity Monitor to ensure nothing funny was going on and didn't find anything odd. Subsequent runs couldn't duplicate the result either. It's pretty unusual for us to see that sort of run-to-run variation in our tests so it's not totally clear what happened there, other than Lion does seem to be doing more in the background which could impact battery life than previous iterations of OS X.

Performance: Similar to Snow Leopard Final Thoughts
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  • khimera2000 - Wednesday, July 20, 2011 - link

    that's pretty neat. It looks like it adds in a bunch of interesting features. The one trend I do see it that both mac and M$ are driving components from there mobile platforms into there desktops. I don't mind if they do this, but I still want a different feel between devices.

    As for the complaints and shouts of if its a service pack that should be free, or if its an update worth 30 bucks. On this subject I think that there is no comparison, M$ has a setup that benefits its use of massive volume licencing, but the option to pay for service packs makes sense for a company that does not dominate 90% of the market, but want to maintain more talent to add more features. I know that some people might take offense to this, but its my opinion so screw you.

    Still confused on the full screen thing, I can move between applications easily, with all of them in full screen, its called ALT+TAB, or Win+Tab, or CTRL+TAB (when you want to cycle through your web browser only. so the entire portion where he says its a advantage over win (this feature) makes me confused, then again i'm a big fan of keyboard shortcuts, so i could be missing things. I'm hoping that the full screen feature pans out. I am considering getting one, but not till they leave the OSX family. (still hate the way it came to be >.<)

    the movement away from CD is great, here's hoping that there are plans in the works for all software to be distributed like this, because... I cant remember the last time i walked into a store and asked myself what program do i need...

    Over all it was a interesting read.
  • chenedwa - Wednesday, July 20, 2011 - link

    I just installed Lion on my circa 2009 MBP 2.53GHz C2D. I then tried to download the latest Parallels update via WiFi using Firefox 8 beta and was getting phenominal transfer speeds of more than 900kB/sec for the 203MB download! Wow!
  • Uritziel - Friday, July 22, 2011 - link

    None of that sounds wow worthy...
  • Uritziel - Friday, July 22, 2011 - link

    Or applicable to the article...
  • ThreeDee912 - Wednesday, July 20, 2011 - link

    About future support for the white MacBooks, it appears that Apple has silently discontinued them. They're nowhere to be found on the Apple Store website.

    Engadget also reported that they received word from Apple that they really were discontinued:
    http://www.engadget.com/2011/07/20/the-macbook-dro...
  • secretmanofagent - Wednesday, July 20, 2011 - link

    "Also missing is the button in the upper right-hand corner that would invoke icon-only view - those of you who use it will have to become acquainted with Alt+Command+T, a keyboard shortcut that toggles this change."

    Should be Command-Option-T.
  • SmCaudata - Wednesday, July 20, 2011 - link

    So with my early 2008 Mac Book I already took a hit to batter life with Snow Leopard. In fact, I just got a new battery and after a couple of months the health reads at 80%. I have seen other's with this issue but the posts often get deleted on the main apple forums. Now I would take another hit to upgrade to Lion?

    I really liked my MacBook Pro when I got it, but this blatant disregard for current customers in a push to get people to upgrade is ridiculous. My laptop has plenty of power for laptop tasks. I don't need to upgrade hardware for performance reasons.

    Remember how much crap Microsoft took for making Vista a system hog on older systems? Do you think that Apple will ever see anywhere near the rage?
  • name99 - Thursday, July 21, 2011 - link

    Then don't upgrade.

    What are you so angry about? Your mac will work just like it used to. Apple will continue to provide security and other updates for at least three years. You'll get iTunes and Safari updates. What's the problem?

    If you find you HAVE to have some Lion feature, sell your MacBook on eBay --- you'll get a surprisingly good price.
  • MonkeyPaw - Wednesday, July 20, 2011 - link

    The 64 bit support isn't entirely an Apple issue. It is Intel that treats 64 bit as a feature to be hacked out of CPUs on a whim to make them "cheaper." It just bugs me the way its been handled by everyone but AMD. 64bit sure looks like the future, but here we are dragging our heels on support.

    Anyway, does OSX support SMT? I thought that it didn't, but I see the latest specs of hardware with the 2/4 core/thread configuration.
  • tipoo - Thursday, July 21, 2011 - link

    Ehh? SMT is a processor feature, OSX will use as many cores (real or virtual) as you can throw at it.

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