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    Performance Issue on battery mode

    Discussion in 'Alienware 17 and M17x' started by MiyamotoG, Sep 9, 2011.

  1. MiyamotoG

    MiyamotoG Newbie

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    My m17r3 runs great when the AC is plugged in, but once it is on battery mode, it starts to lag when im playing game. Im am playing the witcher 2 and i know its very demanding on graphic cards and i have no problem with it running on gtx 580m when its in plug in mode. Once i switch to battery mode, it becomes unplayable.

    I have tried changing power saver settings, changing nvidia control panel settings, changing registry settings and called the Dell regarding the above issue and it seems that there is no solution. I was hoping the experts in here can shed a light or two.
     
  2. qohelet

    qohelet Senior Member

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    its normal. you will not get max performance of your r3 when you are not plug in.
     
  3. MiyamotoG

    MiyamotoG Newbie

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    You mean there is no way i can push it to max performance? I have read up that for other models or brands of gaming laptops, one is able to push it to max performance even tho it drains the battery superfast.
     
  4. TostitoBandito

    TostitoBandito Notebook Evangelist

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    Your CPU and GPU at 100% load and normal clock rates draw way more power than your battery is capable of providing at any one moment. Due to this, they are downlocked when on battery power and you will see lower performance as a consequence. You can't expect to play any demanding games on battery. No gaming laptop is able to do that; they are all downclocked when not on AC to prevent overloading of the battery.
     
  5. Harryboiyeye

    Harryboiyeye Notebook Deity

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    Unless you want the battery to melt ^_^
     
  6. DarthPierce

    DarthPierce Notebook Consultant

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    actually, not just melt... you would have to physically remove fail-safes (by law in the battery itself) and then risk sufficient overheating to cause an extremely energetic fire.
    By energetic I mean the flaming battery produced enough heat to burn through a metal table it's sitting on... thermic lance style.
     
  7. Megatony73

    Megatony73 Notebook Consultant

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    I say it again for the 10,000th time...what is peoples obesession with using these laptops without the PSU plugged in???? Seriously!!

    And besides even if there was some way to get the damm thing to run at max on battery...what would you get? 15 minutes? LOL
     
  8. DarthPierce

    DarthPierce Notebook Consultant

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    yes. If you could remove the internal current limiters in the batteries and if they didn't literally go up in flames, you'd be looking at best case about 22 minutes.

    The numbers behind that use the fact that the machine ships with a 240 watt AC adapter, so that's gong to be near it's max draw under load (e.g. heavy gaming) and it has a 90WHr battery
    90WHr/240W * 60min/Hr = 22.5 minutes

    However, a li-ion battery doesn't deliver anywhere near it's rated energy when it's being drained that fast so if you could override the bios and the internal battery safety systems, you'd be looking at maybe 15 minutes of gaming.
     
  9. Megatony73

    Megatony73 Notebook Consultant

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    Yeah! 15 minutes of sweet not-plugged in gaming! Best. 15. Minutes. EVER!!

    I hope you can sense the sarcasim, I am laying it on pretty thick here...