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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  • grahamperrin - Thursday, July 28, 2011 - link

    Primarily FAO the AnandTech reviewers

    Thank you for a very timely and useful review of FileVault 2.

    The following microblog conversation links to an overview (work in progress) with some unanswered questions. Comments will be greatly appreciated.

    http://identi.ca/conversation/77065575#notice-7963...

    — OpenID enabled, I will welcome contributions in the Identi.ca area.
  • nardreiko - Tuesday, August 2, 2011 - link

    And it is a big problem!

    The removal of Expose and Rosetta are big reasons not to "upgrade" for me both now and for the foreseeable future.

    A lot of other things are clunky or ugly or annoying (like the inability to control scrolling speed in System Preferences) ... but those are minor reasons not to "upgrade".

    This was a tough review to do, and I love Anandtech, but I think you guys skimmed over some very important negatives. I don't know a single person who is not an Apple employee or stock owner who claims to really like Lion ... come to think of it I haven't yet met an employee who really likes it, so it is pretty much stock owners who are saying it is an upgrade-without-quotation-marks. Although a lot of employees do genuine like the full-screen mode.
  • tomeg - Wednesday, October 12, 2011 - link

    nardreiko said:
    "I don't know a single person who is not an Apple employee or stock owner who claims to really like Lion ... come to think of it I haven't yet met an employee who really likes it, so it is pretty much stock owners who are saying it is an upgrade-without-quotation-marks. Although a lot of employees do genuine like the full-screen mode."

    tomeg replies:
    I have a circle of nearly 200 fellow Mac users—real, (mostly) unbiased, not-at-all picky or ego-inflated (I'm not suggesting that you are), everyday-if-not-hour-intensive Mac users—and our experience has been 95% positive or enthusiastic. Some are disappointed with the loss of or change to this or that, as am I, and we have to adjust, go As The Mac OS Turns, but not one isn't glad they upgraded. Any OS must continue to be evolutionary or die. Some things go, others stay, but the overall progress is forward. I will take Lion over Windows 7 hands down this or any day. Windows has its features and (of course) fans but I'm not buying, now or ever, unless something goes massively wrong with current OS development.
  • bjoff - Sunday, September 4, 2011 - link

    Thanks for an enlightening test! One thing I wish you had tested was the time to wake from sleep. On my macbook air (with very similar specs to your setup), it seems that waking from sleep takes a couple of seconds more with FileVault enabled. This is pretty significant when you are used to the very quick waking of Apple products...
  • raygos - Wednesday, September 21, 2011 - link

    The reviewer complains that Resume can be annoying for the likes of him/her when a clean slate is desired. He/she writes: "I found myself pressing command-W a bunch of times to close windows before I'd press command-Q to quit the program." There is, of course, the shortcut command-option-W to close all open windows in the active application. For mousers, press option while clicking the red "close window" button does the same thing. Gotta save those clicks!
  • dtalari - Friday, October 28, 2011 - link

    I am a work-study at a college and we recently bought a bunch of IMACS to make an IMAC Labs for all the students. We also have a few for the staff. We had Snow Leopard installed initially and we were able to connect perfectly fine to all of the servers within our network,however since our implementation of lion the servers don't show up under the shared tab in the finder automatically like before. The computers on the network show up but not the servers. Anyone have any ideas as to why? I figured it has something to do with samba not being implemented as it was in Snow Leopard? Is there any easy way to change a setting? Or do I have to manually add each server to each computer?
    Thanks

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