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    gt650m throttling in battery mode ?

    Discussion in 'HP' started by link626, Sep 26, 2012.

  1. link626

    link626 Asus GL502VM, Lenovo Y580, Asus K53TA

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    Does the DV6T gt650m throttle like crazy on battery mode ?

    When you look at Nvidia Inspector or GPU-Z, does it look like this when you run a graphical app like Furmark? see the 2nd graph how it drops every other second to lowest idle clock.
    I was running Furmark as a test here.

    I just want to see if all optimus gt650+ behave this way.

    [​IMG]
     
    link626, Sep 26, 2012
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  2. LTBonham

    LTBonham Notebook Evangelist

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    I do not have a 650m, but I have had a couple laptops with discrete cards. They either downclock or have erratic performance something like that when unplugged. I figured that the batteries were insufficient to max a CPU and GPU at the same time, so it throttles back to manage power usage.
     
    LTBonham, Sep 27, 2012
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  3. yknyong1

    yknyong1 Radiance with Radeon

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    Throttling GPU on battery is normal. And gaming on battery is murder on your battery.
     
    yknyong1, Sep 27, 2012
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  4. kisetsu17

    kisetsu17 Took me long enough

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    Mine runs constantly on 405Mhz on core only whenever I game/stress the GPU on battery. The power draw is too much for the battery to handle I think.
     
    kisetsu17, Sep 27, 2012
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  5. link626

    link626 Asus GL502VM, Lenovo Y580, Asus K53TA

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    interesting.

    furmark only stresses one core. It's mostly gpu. but mine can't hold 405mhz for even 2 seconds. I have to force it with nvidia inspector.

    i don't game on battery, but still, i found this throttling to 135mhz as peculiar behavior.
     
    link626, Sep 28, 2012
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  6. LTBonham

    LTBonham Notebook Evangelist

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    Actually you are correct, sorry for initially brushing this off.

    Mentioned here Review MSI GE60-i789W7H Notebook - Notebookcheck.net Reviews, the GPU was throttled to 405 MHz and 400 MHz respectively as compared to the 835 MHz and 1000 MHz clock speeds respectively on AC power

    Probably different laptop, but you get the picture.

    Are there any settings in the NVIDIA control panel that allow you to set performance while on battery? I don't know much about the settings, but might be helpful.

    Second would be drivers. Reinstall? What version do you have on your laptop?

    Edit - I have to say that "I am dissapoint" cracks me up. Well played.
     
    LTBonham, Sep 30, 2012
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  7. kisetsu17

    kisetsu17 Took me long enough

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    That's been getting to me for quite a while now, actually. :)) That's not you, is it, link626?

    Anyway, I think it depends on your laptop. Do you have the Y580? It might be either the laptop or the drivers. I was using the 304.48 when I last observed the steady 405MHz on battery.
     
    kisetsu17, Sep 30, 2012
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