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Underclocking my MR9700 to increase battery life?

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Old Sep 19, 2005, 09:24 AM   #1
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Underclocking my MR9700 to increase battery life?
Has anybody here ever ever experimented with... ahem, "anti-overclocking?" Underclocking, you could call it, I guess. Just lowering the clock speed. HAs anybody ever experimented doing this? Does lowering the clock and memory speed do anything for your battery life?
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Old Sep 21, 2005, 12:57 PM   #2
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I tried ONCE on my AMIL D 1845, and the image got corrupted and the PC freezed. When I'm in battery mode it automatically underclocks it... So I leave it that way!
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Old Oct 31, 2005, 07:09 PM   #3
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Bump in case anybody else ever tried it.
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Old Nov 3, 2005, 04:29 PM   #4
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you can underclock the gpu but i think that wont help.. as it is still eating the same power from your power source.. you have to reduce the voltage, not sure if thats possible. but if you know a way, let me know
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Old Nov 4, 2005, 01:54 AM   #5
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Quote:
Originally Posted by dutty
you can underclock the gpu but i think that wont help.. as it is still eating the same power from your power source.. you have to reduce the voltage, not sure if thats possible. but if you know a way, let me know
That's not correct. When you slow down the GPU, it consumes less power and produces less heat, just like speed-scaling CPUs.

It should be safe to downclock the GPUs, and should definitely give you better battery life. Hence ATI's PowerPlay system on most chipsets.
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Old Nov 4, 2005, 11:50 AM   #6
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System Specs

Quote:
Originally Posted by redsolar
That's not correct. When you slow down the GPU, it consumes less power and produces less heat, just like speed-scaling CPUs.

It should be safe to downclock the GPUs, and should definitely give you better battery life. Hence ATI's PowerPlay system on most chipsets.
How to do the same on Linux?
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Old Nov 5, 2005, 06:38 PM   #7
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Okay, thank you for the answers! I'll try and play around with it.

And as for Linux, this is a great ATi overclocking tool I use on my desktop. I am not sure if it works for Mobility cards, but it should.
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Old Nov 8, 2005, 12:38 AM   #8
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Quote:
Originally Posted by RIV@NVX
How to do the same on Linux?
I wish I knew . I would be a happy man . The utility above sounds promising, but hardly automatic . But I will try it when I get Linux working properly on my laptop - so far it has been varying degree of success with various distros.
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Old Nov 8, 2005, 09:59 AM   #9
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I know the mr9700 is supposed to have powerplay but does anyone know why it doesn't show up in the CCC? I'm using the official mobility cats
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Old Nov 11, 2005, 10:32 AM   #10
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Gave, interesting observation... Any idea if there are Powerplay settings in the CCC for other cards, or has it justn ot been implemented yet?
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