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152 Posts

08-03-2009

israel

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Wireless power save mode

2009-08-19, 9:24 AM

Hi :)

as you see in the photo:

http://img27.imageshack.us/img27/4356/37952646.jpg

the default sett. was "Max power saving"

i changed it to Max. Performance.

1-the setting i applied did not change nothing practically....what change should i expect to see?

2-what is the recommending setting & why?

3-"Max power saving" - to what?( battery, system, CPU) most of time i do not use battery.

Thanks

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1593 Posts

07-17-2009

Slovakia

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Re: Wireless power save mode

2009-08-19, 13:38 PM

Hi,

1) this change is practically making your wifi card more "stronger" as when this option is selected "Maximum Performance" then the wifi card is more stable in case you don't have a realy stable AP.

Example:

In case you are farr away from you AP where the connection always breaks, then you can set this option to Maximum performance, which will make the wifi card to focus more on the sygnal so that the conneciton will not get lost.
Please note, that you will not see a huge improvement, if you are 500 meters from a AP that can make only 50 meters ;)

 

2) Basically the default setting is the recommended way on how to use it. However feel free to change it, when it's needed, or when you see that your Wifi card is not receiving strong sygnal.

 

3) "Max power saving " belongs, as you already said, to the battery. You know, when you change this to max performance, then the battery is providing more energy to the wifi card, to make it "stronger" = more battery consumption.

 

The battery consumption difference in not that huge difference

 

Rgrds

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152 Posts

08-03-2009

israel

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Re: Wireless power save mode

2009-08-19, 14:18 PM

thank you Herik ;)

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288 Posts

11-28-2007

US

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Re: Wireless power save mode

2009-08-20, 14:36 PM

Basically, your wireless card can go into a lower power "sleep" mode (called PSP) in order to save power.  To do this, it has your wireless access point buffer the traffic coming to it while it sleeps.  A few years ago, there were some problem between access point manufacturers as to how that really should work.  So what would happen is that your card would go to sleep and the access point wouldn't buffer the traffic (or not properly), so when it came out of sleep, the traffic wouldn't be there which could cause problems anything from slow traffic (it would have to re-request the lost information) or even cause dropped connections.

With current drivers and access point firmware, that shouldn't be an issue. But if something has out of date firmware, you could possibly run into problems.

In terms of real world usage, we've seen on average about 10 minute of extra battery life with the feature turned on (the lcd and cd-rom drive being much larger energy users).  So if you are primarily on AC power, then set to Maximum performance.  (Actually my default suggest is Maximum performance always, but I'm a full power to the engines kind of guy..)

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152 Posts

08-03-2009

israel

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Re: Wireless power save mode

2009-08-20, 19:50 PM

Thanks LANOgre for your detailed answer .

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Lenovo G530 4446-24G
had vista and now win7 32bit
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