Underclocking my MR9700 to increase battery life?

Stu L Tissimus · Sep 19, 2005, 03:24 PM

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?

GunBalina · Sep 21, 2005, 06:57 PM

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!

Stu L Tissimus · Nov 1, 2005, 12:09 AM

Bump in case anybody else ever tried it.

dutty · Nov 3, 2005, 09:29 PM

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

redsolar · Nov 4, 2005, 06:54 AM

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.

RIV@NVX · Nov 4, 2005, 04:50 PM

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?

Stu L Tissimus · Nov 5, 2005, 11:38 PM

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.

redsolar · Nov 8, 2005, 05:38 AM

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.

thegave · Nov 8, 2005, 02:59 PM

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

Stu L Tissimus · Nov 11, 2005, 03:32 PM

Gave, interesting observation... Any idea if there are Powerplay settings in the CCC for other cards, or has it justn ot been implemented yet?

Sep 19, 2005, 03:24 PM	#1
Stu L Tissimus DriverHeaven Newbie Join Date: Sep 2005 Posts: 6 Rep Power: 0	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?

Sep 21, 2005, 06:57 PM	#2
GunBalina DriverHeaven Lover Join Date: Aug 2005 Posts: 141 Rep Power: 0	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!

Nov 1, 2005, 12:09 AM	Thread Starter #3
Stu L Tissimus DriverHeaven Newbie Join Date: Sep 2005 Posts: 6 Rep Power: 0	Bump in case anybody else ever tried it.

Nov 3, 2005, 09:29 PM	#4
dutty DriverHeaven Junior Member Join Date: Oct 2005 Posts: 21 Rep Power: 0	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

Nov 5, 2005, 11:38 PM	Thread Starter #7
Stu L Tissimus DriverHeaven Newbie Join Date: Sep 2005 Posts: 6 Rep Power: 0	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.

Nov 8, 2005, 02:59 PM	#9
thegave -=[DHzer0point Team]=- Join Date: Jan 2005 Posts: 96 Rep Power: 0	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

Nov 11, 2005, 03:32 PM	Thread Starter #10
Stu L Tissimus DriverHeaven Newbie Join Date: Sep 2005 Posts: 6 Rep Power: 0	Gave, interesting observation... Any idea if there are Powerplay settings in the CCC for other cards, or has it justn ot been implemented yet?