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Windows 7: Maximum performance on battery

07 Mar 2010   #1

windows 7
 
 
Maximum performance on battery

Hi,

I want to have maximum CPU speed while on battery (for some CPU intensive calculations that must be run far away from an AC source), but windows apparently
does something to slow it down when the AC is not plugged in.
I've searched for this in the power options, but didn't find what I was looking for!

Any help is greatly appreciated
Thanks!

My System SpecsSystem Spec
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07 Mar 2010   #2

Windows 7 x64 (SP1)
 
 

This: (Set the maximum state)


Attached Images
 
My System SpecsSystem Spec
08 Mar 2010   #3

windows 7
 
 

Thanks, but I checked that option already. Both are set at 100% and the problem remains. (Even setting the minimum processor state to 100% does not solve my issue.)
My System SpecsSystem Spec
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08 Mar 2010   #4

Windows 7 x64 (SP1)
 
 

Then the BIOS is not listening, switch it off from there.
My System SpecsSystem Spec
09 Mar 2010   #5

windows 7
 
 

I wish it were that simple! Unfortunately, I have Sony Vaio FW, and Sony locked the Bios. I can only access the date/time, password, and boot device order settings
I'm looking into flashing a non OEM bios now. Any pointers on that?
My System SpecsSystem Spec
09 Mar 2010   #6

Windows 7 Ultimate x86-64
 
 

Use the High Performance power plan.
My System SpecsSystem Spec
10 Mar 2010   #7

windows 7
 
 

That is my current power plan actually. I even tried putting all the fields of "processor power management" to 100%, butt my CPU freq still drops by 50% whenever I plug out the AC (according to CPU-Z and other tests.)
My System SpecsSystem Spec
10 Mar 2010   #8

Windows 7 Ultimate x86-64
 
 

Quote   Quote: Originally Posted by ryujakk View Post
That is my current power plan actually. I even tried putting all the fields of "processor power management" to 100%, butt my CPU freq still drops by 50% whenever I plug out the AC (according to CPU-Z and other tests.)
It will increase as necessary though.
My System SpecsSystem Spec
11 Mar 2010   #9

windows 7
 
 

But it does not! That is the problem. When I have a CPU intensive (90 to 100% of the CPU usage) program running with the AC on, the frequency is 2194 MHz. As soon as I unplug the AC, it drops to 1196 (although the CPU intensive program is still running) but goes back up to 2194 when I plug the AC back in.
Could this be a locked setting of the BIOS? As a reminder, I have an extremely limited OEM BIOS that does not let me access anything besides the time/date, password, and boot order.
My System SpecsSystem Spec
12 Mar 2010   #10

Windows 7 Ultimate x86-64
 
 

Quote   Quote: Originally Posted by ryujakk View Post
But it does not! That is the problem. When I have a CPU intensive (90 to 100% of the CPU usage) program running with the AC on, the frequency is 2194 MHz. As soon as I unplug the AC, it drops to 1196 (although the CPU intensive program is still running) but goes back up to 2194 when I plug the AC back in.
Could this be a locked setting of the BIOS? As a reminder, I have an extremely limited OEM BIOS that does not let me access anything besides the time/date, password, and boot order.
Flash the BIOS.
My System SpecsSystem Spec
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 Maximum performance on battery





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