Still Better Battery Life Than Windows 7

Other than running Safari in 64-bit mode, the best way to hurt battery life on your MacBook Pro is to throw Windows 7 on it. I've pointed OS X's battery life advantages out before, but this is one of those things that's difficult to compare since there's only one brand of computer that runs OS X.

The best reference point I've got is still my old Thinkpad X300. It has a similar configuration in terms of battery capacity and CPU power draw to the MacBook Air, yet gets about half the battery life under Windows Vista as the Air did under OS X. Put them both under Vista and they are quite similar.

I ran a few more tests with the MacBook Pro under Windows 7 to see what the final tally was. Apparently the latest version of Boot Camp improves Windows 7 battery life, but I like having numbers to back up unverified claims.

I ran two tests under Windows 7, our light wireless web browsing test and our XviD playback test. The reason I chose these two is simple: I wanted one where the system spent a good amount of time in an idle state (up to 20 seconds between web page loads in the web browsing test) and another where the system was constantly busy (with no hardware XviD offload, the CPU has much less downtime).

Windows 7 was configured to maximize battery life, running in its power saving mode. Unlike the test I ran in the last review, I used IE8 and Windows Media Player 11 in Windows 7 while I used Safari/iTunes in OS X. The results I got were both expected and quite revealing:

13-inch MBP Battery Life OS X 10.6.1 "Snow Leopard" Windows 7 x64 OS X Advantage
Light Web Browsing 468 minutes 263 minutes 77.9%
XviD Playback 207 minutes 198 minutes 4.5%

 

The light wireless web browsing test echoed what I'd seen previously: OS X is better for battery life when it comes to lots of idle time (from the CPU's perspective). But look at the XviD results, the two OSes last the same amount of time.

These results appear to confirm what I'd suspected; throw enough load on the system and the OS X advantage is negligible. Keep it light and with enough idle time and you'll find OS X pull ahead. Jarred has seen similar results. One of his battery life tests involves leaving the laptop idle at the Windows desktop until it shuts off. None of his laptops have ever been able to match the battery life of the MacBook Pro in my light wireless web test.

Ultimately Apple still uses the same hardware as PC notebook manufacturers, so under load its systems shouldn't really consume any less power. But at idle Apple has much more control over the OS and drivers than a Dell or HP, the result appears to be better idle battery life. For light usage or working with a lot of pauses or downtime, OS X just lasts longer.

Snow Leopard: Bad for Battery Life Performance
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  • nangryo - Saturday, November 14, 2009 - link


    Do you realize the PC hardware you mention to replace MAC product is equivalent in price or even worse, more expensive (Adamo, AlienWare) please stop trolling. If you don't like it, don't read it. No one force you to come here and whine like a crybaby.
  • tuskers - Tuesday, November 17, 2009 - link

    I love your argument-- "you bring up competition in a similar price range, so you must be a troll." You're using the traditional PC-versus-Mac argument of "PCs cost less!", except with even less basis.

    I want to read a fair comparison of Mac versus the competition, not a slaughter of value-designed PCs. Mac very well might be the best out there-- I think it's pretty well conceded that Macs win on battery life, and OS X certainly has those that swear by it. And I'm absolutely fine with those sections of the article.

    This simply isn't an Apples-to-apples comparison. I'm not saying the other companies' brands are better-- what I'm saying is, Apple produces products with a specific type of user in mind-- one at the mid-to-upper performance range (in terms of hardware), with as much dedication to form-factor as it has to functionality. Yes, I expect other companies to ask

    If I go shopping for a luxury car, I don't compare Lexus to Honda and Chevy, I compare Lexus to Acura and Cadillac. Similarly, I don't compare $1100 computers with $2500 computers. But you don't even need to escalate past $1000 to find the MSI X600 or GX720. Adamos cost more than 13" Macbooks, but they also ship standard with SSDs, higher screen resolution, and slimmer chassis (although with disadvantages as well). The Envy ships with more horsepower in a similar form-factor for slightly more money (much less than some of the disparities in the article).

    These are the compare/contrast elements that make for interesting decisions, rather than a "look at the shiny Macs!" article.

    I'll take back the implication that this might have been a "sponsored" article, but it's simply the first thought I had after I read it.
  • The0ne - Thursday, November 12, 2009 - link

    As I said earlier it seems Anand is all "giddy" because he got a new toy to play with. That excitement alone causes all sorts of things :D fun things in most cases hahaha

    I can't help but agree with your comments. After reading others comments I'm not only shock at Anand but at some users supporting the $2500 MacBook to no end. If I had the money or my company allows the spending I would like to have one, of course. But it's really not practical at all when you have so many other choices in the market.
  • blufire - Wednesday, November 11, 2009 - link

    Just released.. may address the excessive battery drain for 64-bit Safari with 32-bit Flash.
  • citan x - Wednesday, November 11, 2009 - link

    Why does it feel that there is too much Mac pro coverage? Most of the info on here has already been available. Why a full blown article on them now?

    Also, why wasn't the new Asus UL80 that was just reviewed compared here. What I would like to know is how the Asus UL80 compares to the 13" Mac when both have an SSD.

    The 17" Macbook Pro is nice, but just too expensive.
  • mitaiwan82 - Wednesday, November 11, 2009 - link

    Good article, but the product shots are a bit overexposed for my taste. The MBPs almost blend into the white background of the site.
  • blufire - Wednesday, November 11, 2009 - link

    The image of the 15" MBP on page 3 appears to be a 17".
    Thanks for the article!
  • JimmiG - Wednesday, November 11, 2009 - link

    I hate it how Apple doesn't use the extra space of the 15" and 17" models to put in a better keyboard and a numpad. My 15" HP Probook comes with big, nicely spaced keys that use all the available space, and they even managed to cram in a numpad without making things look cramped or crowded.
    The 17" Macbook looks absolutely ridiculous with that *huge* emptiness around the tiny keyboard. I see they no longer include a numpad on the keyboard that comes with the iMac, either. I guess it's to show the world that Macs are "fun", while PCs are only used for Excel and stuff...but still, some of use need to be boring from time to time, and then a numpad is a must.
  • MrPete123 - Wednesday, November 11, 2009 - link

    Anand, I heard there were unofficial ways of running MacOS X on standard PCs... would it be possible to do this and do battery tests to see how it handles it? I'm really interested to know what Apple's doing to make their OS so power efficient.

    Maybe it disallows C-states or something in their BIOS for non-OSX operating systems?
  • nangryo - Saturday, November 14, 2009 - link

    Not, it's not possible, at least in a formal/official benchmark / reporting. Because it would face legal problem etc etc.

    He may do it unofficially though.

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