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    Question about modifying GPU BIOS

    Discussion in 'Acer' started by kai435, May 2, 2010.

  1. kai435

    kai435 Newbie

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    Does anyone have experience in modifying their GPU BIOS to overclock their graphic card? I know its risky, but my graphics card (ATI HD3470 hybrid x2) has no desktop equivalent so i cant use ATI Tools.
    I have managed to get a 30% overclock, from 680 mhz to 880 mhz, while at the same time undervolted it by 0.1 volts.
    Are there any long term consequences if its stable?
    -EDIT-
    For anyone interested, benchmarks
    Voltage Core Clock Memory Clock Temperature Furmark Score Temperature(%) Performance(%) Perf/Temp(%)
    1.1 680 500 68 498
    1.1 680 600 70 581 2.941176471 16.66666667 5.666666667
    1.1 680 700 73 634 7.352941176 27.30923695 3.714056225
    1.1 746 500 73 503 7.352941176 1.004016064 0.136546185
    1.1 746 600 75 594 10.29411765 19.27710843 1.872633391
    1.1 746 700 76 662 11.76470588 32.93172691 2.799196787
    1.1 814 500 76 509 11.76470588 2.208835341 0.187751004
    1.1 814 600 77 609 13.23529412 22.28915663 1.684069612
    1.1 814 700 79 681 16.17647059 36.74698795 2.271631982
    1.2 840 700 86 696 26.47058824 39.75903614 1.502008032
    1.2 880 700 90 707 32.35294118 41.96787149 1.297188755
     
    kai435, May 2, 2010
    #1
  2. BruBoo

    BruBoo Notebook Evangelist

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    Overheating is the main thing to watch out for - especially in a laptop
     
    BruBoo, May 2, 2010
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  3. kai435

    kai435 Newbie

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    It actually runs cooler or the same as stock frequencies, I think thanks to the 0.1 volt undervolt.
     
    kai435, May 2, 2010
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  4. hna

    hna Notebook Consultant

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    i dont recommend it. i did it before, the system bsod on windows boot screen. thankfully i was able to restore to the default bios.
     
    hna, May 2, 2010
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  5. kai435

    kai435 Newbie

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    I've already modded my bios and I am already playing Modern Warfare 2 on my laptop, it runs noticeably faster now, I think so anyway.
    There's separate clocks and voltages for different applications, how did you get a BSOD?
    Does anyone know a safer method to overclock the ATI HD3470 hybrid x2?
     
    kai435, May 2, 2010
    #5
  6. kai435

    kai435 Newbie

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    For anyone interested, this are my benchmarks
     

    Attached Files:

    kai435, May 3, 2010
    #6
  7. EchoShade

    EchoShade Notebook Evangelist

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    Regardless of the OC, you are shortening the lifespan of your GPU. If you keep heat in check, then it dies much slower. But if it is manageable like you said, then it may be years down the road before it dies and by then it's going to be horribly outdated. Just keep it under 85C on load.
     
    EchoShade, May 3, 2010
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  8. kai435

    kai435 Newbie

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    Ok, I don't need this GPU to last longer than 8 more months anyway. Would anyone be interested in a guide to overclocking their GPU?
     
    kai435, May 4, 2010
    #8
  9. moral hazard

    moral hazard Notebook Nobel Laureate

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    Yes it's always interesting to read guides, even if I don't have an ATI GPU, please go ahead and write it ;)
     
    moral hazard, May 4, 2010
    #9