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    CPU clock speed throttling severely

    Discussion in 'Lenovo' started by Marcham93, Apr 17, 2011.

  1. Marcham93

    Marcham93 Notebook Evangelist

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    My T410s seems to throttle down to below 300mhz when ever I try to do anything intense such as playing a 3D game.

    My CPU temp has never gone above 80C.

    The laptop rests on a dock with sufficent air flow and cooling.

    I have the latest BIOS from Lenovo.

    Any ideas?
     
    Marcham93, Apr 17, 2011
    #1
  2. Thors.Hammer

    Thors.Hammer Notebook Enthusiast

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    That sounds like something Dell would pull to keep from burning up the GPU.

    What GPU do you have in your T410s?
     
    Thors.Hammer, Apr 17, 2011
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  3. Marcham93

    Marcham93 Notebook Evangelist

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    Nvidia Optimus NVS 3100m
     
    Marcham93, Apr 17, 2011
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  4. Thors.Hammer

    Thors.Hammer Notebook Enthusiast

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    How would I reproduce this issue on my T410s? What are you using to monitor the CPU? Would one of the built-in games do it? I don't have many games.
     
    Thors.Hammer, Apr 17, 2011
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  5. Marcham93

    Marcham93 Notebook Evangelist

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    I am using a free tool called CPU-Z to monitor the frequency and Speedfan to monitor the temperature.

    I am not using any built in games. I have a collection of 3D PC games. None of the built in Windows games are any where near demanding enough to reproduce the issue.
     
    Marcham93, Apr 17, 2011
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  6. Thors.Hammer

    Thors.Hammer Notebook Enthusiast

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    Didn't you say this also happens on HD movie playback? If so, what bitrate are the movies you are playing?
     
    Thors.Hammer, Apr 17, 2011
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  7. Marcham93

    Marcham93 Notebook Evangelist

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    That issue would happen when I had multiple programs open (Outlook, Zune, Trillian, Seesmic, IE9) and tried to watch HD content from Revision3.com
     
    Marcham93, Apr 17, 2011
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  8. LoneWolf15

    LoneWolf15 The Chairman

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    As someone who has worked with a lot of Dell product, I'm wondering if you care to qualify that statment? I've never seen Dell do anything like this, including on my Latitude C840 P-4M laptop back when I had one.
     
    LoneWolf15, Apr 17, 2011
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  9. MidnightSun

    MidnightSun Emodicon

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    OP, what are you using to measure temperatures? If you use TPFanControl and increase fan speeds to keep temperatures down, does the laptop still throttle under heavy load?

    I think he's overgeneralizing and referring to the throttling issues with the Latitude E64x0 and E65x0 series.
     
    MidnightSun, Apr 17, 2011
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  10. LoneWolf15

    LoneWolf15 The Chairman

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    LoneWolf15, Apr 17, 2011
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  11. Thors.Hammer

    Thors.Hammer Notebook Enthusiast

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    Yes, I was referring to the throttling imposed by Dell on some of their models and BIOSes, documented everywhere. And no, I am not perturbed. I could care less. My T410s works very nicely but I don't use it for gaming or HD playback.
     
    Thors.Hammer, Apr 17, 2011
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  12. Marcham93

    Marcham93 Notebook Evangelist

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    Excellent! I installed TPFan Control and it shows more accurate temperatures... I guess there was something wrong with the way SpeedFan was reading everything. The temps TPFan Control show are around 80-90C.

    I switched control from BIOS to TPFan Smart and that pushes the fan about 1k faster which seems to be working so far. I will continue to test.

    Thanks!
     
    Marcham93, Apr 17, 2011
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  13. ComputerNewb

    ComputerNewb Notebook Consultant

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    If I can remember correctly, there was another person with a similar issue somewhere.... Update your video drivers?
     
    ComputerNewb, Apr 17, 2011
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  14. Marcham93

    Marcham93 Notebook Evangelist

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    I have the latest and greatest.
     
    Marcham93, Apr 17, 2011
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  15. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    John Ratsey, Apr 18, 2011
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