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GT540M- Getting max performance on battery?

post #1 of 8
Thread Starter 
With Precision giving me the readings, I'll go to play a game on battery, and sometimes, the FPS will be descent, but it will vary from around 20% usage to 80% usage. I've done all I could think of to fix this:

-In NVCP, under Power Management mode, I set "Prefer Maximum Performance"

-I'm using the "High Performance" power setting. I can tell because under this power setting, my CPU has Turbo Boost and uses it when it needs to.

Should I try the latest drivers from the Nvidia site? They are the 280.26's. I'm currently using 267.21's.
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post #2 of 8
First of all you should always use the latest drivers. So go and do that. Only use older ones if the newer ones do not work for some reason (which in that case other stuff must be taken into consideration)

Be sure to have the lates optimus drivers, if your laptop does indeed have integrated graphics bundled within.

And last but certainly not least, some hardware is strictly coded by software to perform with lower voltages/clocks when on battery, even if the device is set to full (high) performance.


Nevertheless, Make a custom power profile and make sure that the GPU's maximum usage is set to 100%
     
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by experience333;15193089 
First of all you should always use the latest drivers. So go and do that. Only use older ones if the newer ones do not work for some reason (which in that case other stuff must be taken into consideration)

Be sure to have the lates optimus drivers, if your laptop does indeed have integrated graphics bundled within.

And last but certainly not least, some hardware is strictly coded by software to perform with lower voltages/clocks when on battery, even if the device is set to full (high) performance.


Nevertheless, Make a custom power profile and make sure that the GPU's maximum usage is set to 100%

Okay. I'll have to look for the latest Optimus drivers too. (Intel HD 3000 is on the Sandy Bridge)

Thats dumb. But alright. I'm gonna have to figure out how to make a custom power profile. Any idea how I go about doing that?
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post #4 of 8
which laptop? Most (including the m11xR3 - the R2 and R1 didn't however) throttle the GPU on battery, simply because of power draw on the battery.
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post #5 of 8
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post #6 of 8
The problem may well be that the nV drivers don't have all the stuff you need to make Optimus work correctly. Thus, instead of grabbing the drivers from nV, I recommend getting them from laptopvideo2go.

I have (in fact I'm on it now) an Acer 3830tg which is a very similar setup and I had a lot of issues w/nV drivers until I switched to custom lv2go drivers. I'm using 275.50's from there.

Also does your laptop have a 'power saving' button? Mine does, and if it's activated, games will run really poorly until I turn it off. I didn't even know what the button was for until I started trying to research why games like crap on battery power and discovered it from others on an internet forum wink.gif

You might also be getting some CPU throttling due to heat ... my cpu will drop to a 12x multiplier after gaming for a while (unless I control it using throttlestop) which significantly impacts gaming performance, and causes gpu usage % to fall (as it causes a cpu bottleneck).
Edited by brettjv - 10/5/11 at 11:29pm
    
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by brettjv;15197498 
The problem may well be that the nV drivers don't have all the stuff you need to make Optimus work correctly. Thus, instead of grabbing the drivers from nV, I recommend getting them from laptopvideo2go.

I have (in fact I'm on it now) an Acer 3830tg which is a very similar setup and I had a lot of issues w/nV drivers until I switched to custom lv2go drivers. I'm using 275.50's from there.

Also does your laptop have a 'power saving' button? Mine does, and if it's activated, games will run really poorly until I turn it off. I didn't even know what the button was for until I started trying to research why games like crap on battery power and discovered it from others on an internet forum wink.gif

You might also be getting some CPU throttling due to heat ... my cpu will drop to a 12x multiplier after gaming for a while (unless I control it using throttlestop) which significantly impacts gaming performance, and causes gpu usage % to fall (as it causes a cpu bottleneck).

I downloaded the latest drivers and I'm gonna give 'em a shot. My temps and CPU temps are all good (i5 hits a max of 85C, GPU a max of 78C) NO, I dont have a power save button, only a power button. There are different profiles but I made my own and made sure its on max everything but it still didnt help. So I'm gonna install the new NVdrivers now. Maybe it should help.
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post #8 of 8
Thread Starter 
Installed latest drivers. Went from 267.21's to 280.26's. The problem still persists. Kinda. I'll play MW2 for like 25 seconds, then it gets slow, then speeds up. I can still see the GPU usage go from aroud 70-100 to 23 then all around. Where can I find the Optimus drivers?
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