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haswell power usage win7 vs win8

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November 30, 2013 4:09:41 PM

I heard that the scheduler in win 8 is built to handle multiple core chips and power states (especially those from AMD) better than windows 7. Loading up all the threads on one core when the system doesn't need the performance, allowing more of the CPU to go into power save state. (and conversely, being intelligent about which cores get assigned to which core when performance is required)

While earlier versions of windows are focused on absolutely the best performance, even if each thread is only utilizing a small percentage of the core its assigned to.

Ok thats all fine and good on paper but.... first is all this true?
Second how does all this translate into real world power savings?
a b à CPUs
December 14, 2013 12:14:36 AM

Windows 8 OS is light compared to Windows Vista and Windows 7 ......

Windows 8 can be used for best performance and power saving features .....but still it has bugs
i will wait....until they release Win 8 SP1
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a c 88 à CPUs
December 14, 2013 2:43:40 AM

dosmastr said:
I heard that the scheduler in win 8 is built to handle multiple core chips and power states (especially those from AMD) better than windows 7. Loading up all the threads on one core when the system doesn't need the performance, allowing more of the CPU to go into power save state. (and conversely, being intelligent about which cores get assigned to which core when performance is required)

While earlier versions of windows are focused on absolutely the best performance, even if each thread is only utilizing a small percentage of the core its assigned to.

Ok thats all fine and good on paper but.... first is all this true?
Second how does all this translate into real world power savings?



8.1 was released for haswell chips just like windows 8 was released mainly for fx

but like gokul36 stated i would wait till they iron out the bugs
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a b à CPUs
December 14, 2013 3:15:32 AM

have used windows 8, upgraded to 8.1 recently.....i can already feel the difference in speed (increase obviously)
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a b à CPUs
December 14, 2013 5:04:27 AM

better stick with Windows 7 until they fixes win 8 and 8.1 bugs
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a b à CPUs
December 14, 2013 6:13:24 AM

@gokul36 i am not sure what kind of bugs are you finding in windows 8 or 8.1
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a b à CPUs
December 14, 2013 7:40:48 AM

siddharthmukul007 said:
@gokul36 i am not sure what kind of bugs are you finding in windows 8 or 8.1


I think....your knowledge about OS not up to date

They are lot of Problems......and bugs......its not new
when they release new OS......this happens......

I will Install WIN 8 and 8.1 ....only when they release "Service Pack" 1
until i will wait...... Vista had many problem and even now......
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a b à CPUs
December 14, 2013 7:50:03 AM

@gokul36....i would love to update myself on that grounds then....would you please????


and by the way you cannot install windows 8 & 8.1 ;) 
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a b à CPUs
December 14, 2013 8:11:35 AM

The Major Issue.....Driver issue with many laptop ......

And for touch laptop....i has some issue with "Touch" function

and the thing is WINDOWS 8 mainly optimised for Touch screens laptop and desktop.....

Lost of users experiencing "Games Crashing" during game play

and Some users has problem with windows update ..

Skype is not working in Win 8.1 and they didn't fixed the bugs yet ......

the new Windows 8 Startup really confused lot users and they dont want to use it....Even MAC OX 10.9 Maverick had bugs problem....Compared to Windows.....MAC and Linux OS are more Stable



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a b à CPUs
December 14, 2013 8:57:23 AM

except for the "game crash"....and mouse issues (you didn't mention that by the way) all the other problems are not bugs....driver issues come with every piece of os or even a new piece of hardware....you do not call these bugs.

skype is working on my 8.1

http://i43.tinypic.com/krqlz.jpg
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a b à CPUs
December 14, 2013 9:14:55 AM

Win 8 s not optimised to support...... all drivers

wat u call it?
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a b à CPUs
December 14, 2013 9:30:13 AM

no os does support all drivers right out of the box.....may be you should google a little more
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a b à CPUs
December 14, 2013 9:31:45 AM

Ya! even a Windows laptop doesn't support? dude come on
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a b à CPUs
December 14, 2013 9:35:39 AM

are you telling me windows laptops don't come with their drivers pre-installed?????
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a b à CPUs
December 14, 2013 9:59:49 AM

I am not taking about latest laptop.....Users who r using Wind 7 lap...Installed Win 8 and the drivers are not compatible
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a b à CPUs
December 14, 2013 10:07:43 AM

that is because they need to download latest drivers that are meant to work with win 8
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a b à CPUs
December 14, 2013 10:40:57 AM

DUDE!!! i am not tat much retarded

i know....we have Instal Win 8 Drivers (x64 for 64bit X32 for 32bit) k
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December 19, 2013 3:08:21 AM

so I guess neither of you sees 8.1 as 8 SP1 then
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a b à CPUs
December 19, 2013 3:18:20 AM

dosmastr said:
so I guess neither of you sees 8.1 as 8 SP1 then


8.1 is 8 SP ??? really? then y u seeing separate drivers download for 8.1 & 8?
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December 19, 2013 3:43:14 AM

that's funny, you seem to forget that A. I DON'T HAVE WINDOWS 8 or 8.1

so why would I be looking for drivers for it?

B. its the other guy you were arguing with not me. So be rude to him and not me.

C. you two knuckle heads hijacked a thread asking about power consumption and turned it into essentially: "Driver support sucks and its buggy don't get it." vs "no it doesn't/isn't." <~~~~~ Neither is an answer to OP question
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a c 88 à CPUs
December 19, 2013 4:09:22 AM

dosmastr said:
that's funny, you seem to forget that A. I DON'T HAVE WINDOWS 8 or 8.1

so why would I be looking for drivers for it?

B. its the other guy you were arguing with not me. So be rude to him and not me.

C. you two knuckle heads hijacked a thread asking about power consumption and turned it into essentially: "Driver support sucks and its buggy don't get it." vs "no it doesn't/isn't." <~~~~~ Neither is an answer to OP question




If i was to decide which one to get it be windows 8 currently right now as its had its drivers tweaked better then 8.1 which hasn't been out very long and suffers the odd glitch.

to answer your questions the software handles cores better in amds case modules usually 2 of these modules on a 8 core would do bugger all and just draw power. so windows 8 was made for amds processors to share out the load between the cores. this improves processor performance saves energy as the tasks get done quicker.

In other words windows 8 just destributes the data evenly better over all the cores which makes processing quicker tasks done faster which then when the assignment is done.

power state or when it turns off is just like amds zero core 7000 series it turns of the gpu in amds case and makes it draw the bare minimum to stay awake.

example it would run the bare minimum if let alone unless awoken.

however the minumum state is determined by the hardware your running e.g haswell may go to bare minimum power consumption but say if you have a nvidia card 650 ti that may just suck up its normal idle state.

so if your thinking of going green with power states etc its best to have hardware that has a power saving feature as well for true turn low power consumption

if you have hardware that have a sleep state mode
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a b à CPUs
December 19, 2013 5:30:05 AM

dosmastr said:
that's funny, you seem to forget that A. I DON'T HAVE WINDOWS 8 or 8.1

so why would I be looking for drivers for it?

B. its the other guy you were arguing with not me. So be rude to him and not me.

C. you two knuckle heads hijacked a thread asking about power consumption and turned it into essentially: "Driver support sucks and its buggy don't get it." vs "no it doesn't/isn't." <~~~~~ Neither is an answer to OP question


not rude........ I am just trying to say windows s buggy
tats y i use MAC and Linux :) 
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