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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  • parlour - Monday, July 25, 2011 - link

    The revenue includes all the money that is payed to developers, music labels and media companies. Apple keeps no more than 30% (probably quite a bit less) of it.
  • bwmccann - Wednesday, July 20, 2011 - link

    Just started playing it a month ago and my entire family is hooked!
  • ltcommanderdata - Wednesday, July 20, 2011 - link

    I don't suppose you could compare OpenCL performance between Snow Leopard, Lion, and Windows 7? Given the increasing emphasis Apple is putting in OpenCL and the requirement for it in Final Cut Pro X and no doubt future iLife and pro apps, it'll be good to see how their latest implementation stacks up in performance rather than just feature-set (Lion bumps things to OpenCL 1.1 from 1.0 in Snow Leopard.)
  • jensend - Wednesday, July 20, 2011 - link

    The claim that GPL3 "prohibits inclusion in retail products" is an outright lie. It's not just an inaccuracy- there's no way anybody who was even slightly informed about these things would think that; the ability to sell the software is one of the basic freedoms the GPL has always been about protecting.

    It is true that Apple refuses to use GPL3 software. The only reason I can think of for this is that the GPL3 says that if you distribute software under the GPL3 you implicitly grant patent licenses to everybody for any patents you may have which cover the software. Apple's wish to use its portfolio of obvious and non-innovative patents as a weapon to destroy its competitors conflicts with this.
  • Confusador - Thursday, July 21, 2011 - link

    Came here to say this and you've got it covered. This is an unusual case of blatantly false information on AT, you guys are usually much better informed than this.
  • batmang - Wednesday, July 20, 2011 - link

    I'm a little surprised that Anand didn't include any gaming benchmarks in this OS review just for simple comparison. Overall though, fantastic review and I'll certainly be upgrading to Lion in a week or so. I'm waiting to see if any oddball bugs arise before taking the plunge. Thanks for the review Anand.
  • Kristian Vättö - Wednesday, July 20, 2011 - link

    I think he was going to but didn't have time (we wanted to get this out right when Lion went live). I don't know about his plans but maybe he will update this with GPU performance or do a separate article about that.
  • Gigantopithecus - Wednesday, July 20, 2011 - link

    "Business customers can get Lion for $29.99 per copy in units of 20 or more, and educational institutions can buy it along with the latest iLife and iWork upgrades for $39 in quantities of 25 or higher. Especially when compared to Microsoft's complicated and expensive Windows licensing, these simple, low and clearly defined upgrade prices are extremely welcome."

    I can't speak for business customers, but pricing for higher ed institutions is extremely variable for MS software.

    To wit, at the University of Wisconsin, our tech store offers zero discounts compared to retail on all Apple software, whereas both W7 Pro & Enterprise are $10 for one license and $25 for a fiver. At the University of Michigan, Apple OS software is similarly sold at retail with no discount, while W7 Pro is $19. Michigan State offers no discounts on both OS X and W7 vs retail. Indiana University sells OS X for retail & W7 for $20.

    I'm not familiar with direct-from-Apple educational pricing, but if you go to actual universities' actual computer stores, MS software is sold at enormous discounts at 3 of the 4 Big Ten campuses I'm familiar with. Saying Apple offers lower OS pricing than MS to higher ed customers is flat out inaccurate.
  • mrd0 - Wednesday, July 20, 2011 - link

    Same at Washburn University's School of Law...I purchased the full enterprise Office 7 and then 10 for $9.95, and Windows 7 for $29.95. Apple software is not discounted.
  • SmCaudata - Wednesday, July 20, 2011 - link

    Minnesota is Free to download or the cost of printed media ($8). This was when I was there at least.

    At Colorado both Windows and Office are also free to download. Before that (last year) they participated in the $29 usage option for office.

    The fact is Windows/Office is really only expensive if you are building your own computers and installing your own OS. Even then you can get it rather cheap and the money you save more than makes up for the extra $50 Windows 7 runs over this. Also this only updates on SnowLeopard. If you didn't have that upgrade it will cost you more. Win7 upgrades back to XP, correct?

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