Ati 3870x2

Alright, So i have this problem with my Ati Mobility HD 3870x2 GPU.
For some reason while playing battlefield, every 50 sec. my clock drops from 500mhz to 300 for 10 sec. this process repeats over and over. I've looked all over for a fix.

What ive tried:
Re-installing OS
re-installing graphic card drivers
disabling one card
Running without drivers
Re-installing game
Contacting AMD customer support

My specs:
Intel core 2 Extreme cpu X9100 @ 3.06ghz 3.07ghz
Ati Radeon HD mobility 3870x2
8gb of ram


Help me find a fix please

Thanks,
John Paul
30 answers Last reply
More about 3870x2
  1. Check the heat of your laptop.
  2. Nope, the temperature is staying nominal.
  3. Also, at 500mhz i get 40fps but when it drops it turns to 9.
  4. I'm running on a laptop
  5. On a regular computer its usually a sign of a loss of power, but I don't think that's the problem.

    The GPU will usually throttle itself when the temperatures get too high or there is not enough power.
  6. I am aware. I don't know why the laptop would be throttling the GPU. I'll do some research.
  7. Thanks. Much appreciated. I have the Alienware m17 just for more info.
  8. I had the exact same issue you had (same laptop) and couldn't figure it out. I had to revert back to the 11.2 series drivers before the issue cleared up.
  9. ish416 said:
    I had the exact same issue you had (same laptop) and couldn't figure it out. I had to revert back to the 11.2 series drivers before the issue cleared up.


    Yeah i tried reverting but it doesnt let you launch BF3. :cry:
  10. Does it happen with other games? If not, its an issue with the drivers and the game. Nothing can be done.
  11. 4745454b said:
    Does it happen with other games? If not, its an issue with the drivers and the game. Nothing can be done.



    Yeah this only happens in BF3
  12. Then there is nothing to fix. It's probably an issue with the 3xxx series and BF3. Is there a CAP for the game?
  13. 4745454b said:
    Then there is nothing to fix. It's probably an issue with the 3xxx series and BF3. Is there a CAP for the game?



    I'm unfamiliar with that term.
  14. CAP = Catalyst Application Profile

    I am taking my laptop into work this morning and DL'ing the Armored Kill expansion and will see if I have issues launching the game.
  15. Quote:
    Yeah i tried reverting but it doesnt let you launch BF3.

    What happens when you uninstall and reinstall the 11.2 drivers?


    Regardless of the driver I used I never had any issues with BF3 not launching. It's just the performance was terrible 90% of the time.
  16. ish416 said:
    Quote:
    Yeah i tried reverting but it doesnt let you launch BF3.

    What happens when you uninstall and reinstall the 11.2 drivers?


    Regardless of the driver I used I never had any issues with BF3 not launching. It's just the performance was terrible 90% of the time.


    It says i must update my graphic card driver and then closes.
  17. ish416 said:
    CAP = Catalyst Application Profile

    I am taking my laptop into work this morning and DL'ing the Armored Kill expansion and will see if I have issues launching the game.


    Ive been trying to look around for the ati 3870x2 but i cant find it
  18. The CAP would be for BF3 but you don't need one.

    Here is a link to the 11.2 drivers I am using

    ftp://65.106.72.164/Notebook/IQ_Series/IQ17/Driver/Win7(32)64/03_VGA_ATI_8.821(11.2)_x64.zip

    It's from the ASI website. The company who actually build the computer for Dell/Alienware.
  19. ish416 said:
    The CAP would be for BF3 but you don't need one.

    Here is a link to the 11.2 drivers I am using

    ftp://65.106.72.164/Notebook/IQ_Series/IQ17/Driver/Win7(32)64/03_VGA_ATI_8.821(11.2)_x64.zip

    It's from the ASI website. The company who actually build the computer for Dell/Alienware.


    I tried your drivers and the problem still persists.
  20. no dice. Ive noticed though that this problem doesn't start happening until 5 min into the game
  21. And my gpu usage just drops
  22. I found something very interesting. My first gpu is actually changing its voltage from 1.2v to 0.90 when the lag is happening.
  23. Like others I would say heat. But you said it was "nominal" so who knows...
  24. Mine did the exact same thing. It's like it goes from performance mode to desktop (low power) mode and then switches back every few seconds.

    BF3 and the sniper elite v2 are the only games that I had this issue with.

    When you re-installed your OS did you use an actual Windows disk or just restore from an image?
  25. ish416 said:
    Mine did the exact same thing. It's like it goes from performance mode to desktop (low power) mode and then switches back every few seconds.

    BF3 and the sniper elite v2 are the only games that I had this issue with.

    When you re-installed your OS did you use an actual Windows disk or just restore from an image?

    OS disk
  26. I went through and reread the posts and you state "For some reason while playing battlefield, every 50 sec. my clock drops from 500mhz to 300 for 10 sec. this process repeats over and over."

    My clocks are 660 core and 850 memory while plugged in. Mine drop to 300 core when nothing is happening (on ac or battery) and will stay at 500 core on a single card (2nd one goes inactive) when I am running on battery and gaming. Maybe its something in the performance profiles that is getting switched by default?
  27. ish416 said:
    I went through and reread the posts and you state "For some reason while playing battlefield, every 50 sec. my clock drops from 500mhz to 300 for 10 sec. this process repeats over and over."

    My clocks are 660 core and 850 memory while plugged in. Mine drop to 300 core when nothing is happening (on ac or battery) and will stay at 500 core on a single card (2nd one goes inactive) when I am running on battery and gaming. Maybe its something in the performance profiles that is getting switched by default?


    i dont know.
  28. Go to power in the control panel. Is it set to full?
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