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    Is it Possible To overclock 7970m to 1300MHZ

    Discussion in 'Gaming (Software and Graphics Cards)' started by timehacker, Aug 14, 2012.

  1. timehacker

    timehacker Notebook Enthusiast

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    timehacker, Aug 14, 2012
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  2. SlickDude80

    SlickDude80 Notebook Prophet

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    1.3ghz core?

    The highest i have seen is 1.15ghz core. You will need to overvolt to reach this speed. The highest i have seen with the ram is 1.65ghz. The highest i have done on stock voltage that was 3dmark11, vantage and unigine stable was 1ghz core/1.56 ghz ram

    There is a vbios pack and vbios editor thanks to our friends at techinferno:

    AMD 7970m - modified VBIOS
     
    SlickDude80, Aug 14, 2012
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  3. Micaiah

    Micaiah Notebook Deity

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    Realistically? No. Even if they're the same GPUs, the mobile version will run at a much lower voltage and on top of that, you have nearly a 600 MHz deficit to make up for (70% overclock!). Heat and power supply is going to be a serious issue as well, if the core voltage needs to be increased on top of a 600 MHz overclock.
     
    Micaiah, Aug 14, 2012
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  4. timehacker

    timehacker Notebook Enthusiast

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    Judging from the overclock results on the desktop version, the core speed is the key to higher to get FPS and 3dMark scores.
    The GPU has plenty bandwidth even at stock speeds, thus, more work is require from the core to fill/use it(memory bandwidth).
    Whenever I get my HD7970m's, I will investigate
    Thanks SlickDude80
     
    timehacker, Aug 14, 2012
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  5. timehacker

    timehacker Notebook Enthusiast

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    I will risk the chance to see if its possible...thanks
     
    timehacker, Aug 14, 2012
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  6. SlickDude80

    SlickDude80 Notebook Prophet

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    You will see that increasing the ram on the 7970m to 1500mhz will lead to very nice gains ;)...you have to experiment
     
    SlickDude80, Aug 14, 2012
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  7. timehacker

    timehacker Notebook Enthusiast

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    I believe it...anyway I'm off to work...thanks again :D
     
    timehacker, Aug 14, 2012
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  8. Zymphad

    Zymphad Zymphad

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    How much power does 7870 need to overclock to 1300? Mine is only stable for gaming at 950 here, and 1375 for memory.
     
    Zymphad, Aug 14, 2012
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  9. Meaker@Sager

    Meaker@Sager Company Representative

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    It's exponential. Not all desktop 7870 chips can even reach that speed under air.

    You would need to have SEVERE cooling modifications (certainly to the point where it is no longer portable). You would also maybe need to make hardware mods to the VRM circuitry, adding cooling and maybe soldering in a VRM section from another board to help improve power regulation.
     
    Meaker@Sager, Aug 14, 2012
    #9