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Why Does Windows Have Terrible Battery Life?

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Re: Why Does Windows Have Terrible Battery Life?

#71

Earlier quoted context omitted.

I'm sorry, but that really is not an answer at all. It's just a fairly obvious GUESS.

[Might not be that wild of a guess]( http://randomascii.wordpress.com/2013/07/08/windows-timer-re... )

As the article states, Windows 8 moved to a tickless kernel.

Re: Why Does Windows Have Terrible Battery Life?

#72
post #45

Because Apple have custom ACPI methods for cutting power to unused components and Windows doesn't know how to call them.

I doubt very much that the commodity hardware in Apple laptops exposes any ACPI methods of which other operating systems are unaware.

They are the same components as widely used, just packaged differently ( as lspci from Linux on an Apple machine will show ). From memory the only Apple-branded components were the SD card readers and the keyboard.

And how would Intel / Nvidia / Broadcom / Samsung / LG / whomever be persuaded to keep it a secret?

Re: Why Does Windows Have Terrible Battery Life?

#73
post #4

I wonder if Maverics will widen the gap further. It has that app suspension thing when some window goes invisible. Also there are some decent performance improvements that would mean less cpu usage (or bursts of them, which is more power efficient). Are there any benchmarks? Or is it still behind NDA?

I have a 2010 MacBook Pro and it's about 10-20% better battery life.

Mavericks IMHO is designed for the newer MacBooks which really need to get to 8+ hours battery life for it to change people's behaviour i.e. being able to realistically leave the power adapter at home.

Re: Why Does Windows Have Terrible Battery Life?

#74
post #16

Anecdotal, but on an older 11" MacBook Air I have a dual-boot with elementary OS (Ubuntu derivative) and I get around 20-30% better battery life with Linux than OS X (using laptop-mode-tools etc). I think this is probably due to all the iCloud crap going on with OS X these days, but I have no proof of that.

I've just disabled iCloud on my iMac, many things got faster, such as the Preview app. Previously it could take 3 to 5 seconds to load a trivial png image, now it's less than a second. But unfortunately I'm a bit dependent on the iCloud already...

Re: Why Does Windows Have Terrible Battery Life?

#75
post #39

Well, how about this: because MS doesn't care. It's too late, the code is too large and too old, the developers are too new, no one knows what's going on and this whole thing is a giant rolling monster with parts flying out every second, killing innocent batteries.

Valuable legacy windows programs can run on a tablet. From my perspective that shows that MS cares. Programs written for the Mac can't run on iOS, I think.

"Valuable legacy windows programs can run on a tablet."

Simply because it (Surface Pro) runs the same OS ie regular Windows.

Re: Why Does Windows Have Terrible Battery Life?

#76

The issue has to be engineering. Is it a case of too much distance between the HW and SW people?

> The issue has to be engineering. Did... did you just invent the technology version of Fr Jack's "That would be an ecumenical matter."

In case people aren't familiar with Father Ted...

http://www.youtube.com/watch?v=tpIkDZIqnnY

Re: Why Does Windows Have Terrible Battery Life?

#77

Well, how about this: because MS doesn't care. It's too late, the code is too large and too old, the developers are too new, no one knows what's going on and this whole thing is a giant rolling monster with parts flying out every second, killing innocent batteries.

Reach out and save a battery today! With your help we can change the world. Please submit donation to help this innocent battery to get a better future.

They could name it Wattsi!

Re: Why Does Windows Have Terrible Battery Life?

#78
post #32

Earlier quoted context omitted.

"The charts are quite ridiculous in the article - comparing an Ivy Bridge, actively cooled laptop-tablet to a Nexus 7? Why?" The relevant comparison was the surface pro 2, (a joke of a tablet), has a 42 Wh battery and runs a mere 6.6 hours, but the macbook 11 inch has a smaller 38 Wh battery yet runs longer at 11.1 hours very nearly twice as long.

So are we comparing different hardware or operating systems? Surface 2 Pro and a Macbook Air are completely different: - different screen resolution - one of them has touchscreen, other doesn't - different keyboards (might matter a lot) .. and so on. The MBA is clearly better, but that does not tell too much about whether Windows is inherently bad at power management or not.

Right right that's why the article specifically mentioned plain ole web surfing over wifi.

Umm... I don't think keyboards draw as much power as you might think.

Re: Why Does Windows Have Terrible Battery Life?

#79
post #37
post #32

Earlier quoted context omitted.

"The charts are quite ridiculous in the article - comparing an Ivy Bridge, actively cooled laptop-tablet to a Nexus 7? Why?" The relevant comparison was the surface pro 2, (a joke of a tablet), has a 42 Wh battery and runs a mere 6.6 hours, but the macbook 11 inch has a smaller 38 Wh battery yet runs longer at 11.1 hours very nearly twice as long.

> surface pro 2, (a joke of a tablet) mind sharing why you think it is a joke of a tablet?

Doesn't it have a fan or two? You know this thing that has to rotate thousands times per minute to blow the heated air, producing whirring noise, and being able to get stuck or result in overheating if you cover the exhausts?

http://www.umpcportal.com/2013/09/microsoft-surface-pro-2-im...

http://d3nevzfk7ii3be.cloudfront.net/igi/2RPjdxZgRFebOo1W.me...

Re: Why Does Windows Have Terrible Battery Life?

#80
post #39

Earlier quoted context omitted.

Valuable legacy windows programs can run on a tablet. From my perspective that shows that MS cares. Programs written for the Mac can't run on iOS, I think.

Mac apps can't run on iOS because of the architecture difference. It's the same reason Windows apps can't run on Surface RT.

They could. Apple run PowerPC apps on Intel processors. The real answer is that they don't want them to.
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