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    Anyone tried Voltmoding the 8600m GT for higher OC.

    Discussion in 'Gaming (Software and Graphics Cards)' started by Dragonpet, Jan 17, 2008.

  1. Dragonpet

    Dragonpet Notebook Evangelist

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    How come no one has tried voltmoding the 8600m GT DDR2 to get higher overclock? I remember looking at Dell E1705 and there were tons of thread and guide about OCing and voltmoding the 7900 gs soon after the release of the laptop. But there's non I see for 8600m GT even thought there are 2 version of the card and seeing a GDDR3 version should make it temping for some of the DDR2 8600 user to try it. :confused:

    EDIT: because I really want to try volt modding my card, it is not very OCable, 565/440 was the best it can do (for it to be stable), I want to see if I can at least bring it up to 575/470, but I don't want to do it blind.
     
  2. Gravitator

    Gravitator Notebook Consultant

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    Why do you think you would be able to overclock it higher with voltmoding if it already loses stability?
     
  3. leo_s

    leo_s Notebook Guru

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    Becuase when you add more voltage you get more stability
     
  4. Dragonpet

    Dragonpet Notebook Evangelist

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    There's your answer.
     
  5. Ayle

    Ayle Trailblazer

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    I've got a ddr2 and it was stable a 600\420... I think the memory has more to do with the stability than the gpu voltage since even if I use the stock core speed I can't bring my memory past 440 without artifacting....
     
  6. Dragonpet

    Dragonpet Notebook Evangelist

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    I see, thanks for sharing. That really makes me feel better. Really. =)
    Now what are some of the risk inolving volt moding? I heard something about transistors would pop if I apply too much volt is it true?
     
  7. Ayle

    Ayle Trailblazer

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    what happen when you plug something rated for 110v on 220v?(Just an example)
     
  8. Gravitator

    Gravitator Notebook Consultant

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    How does adding more voltage add system stability? Common sense tells me that more voltage = more heat = less stability=less overclocking, unless the stock voltage is too low, which I do not believe to be the case.
     
  9. leo_s

    leo_s Notebook Guru

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    That's wrong.

    more voltage = more heat = more stability = more overclocking

    When you raise the MHz in your card it requires more power. When there isn't enough power it becomes unstable, that's why voltmodding adds more stability because it raises the power and you get more headroom for overclocking.
     
  10. littledonny

    littledonny Notebook Guru

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    You people obviously know nothing about voltage in relation to overclocking.

    Voltmodding only adds stability if you have the ability to diffuse the extra heat created by doing so. IF your setup can handle the extra heat, voltmodding adds stability because the strength of the signal between gates becomes stronger and is less likely to get dropped. Artifacts and instability occur because signals actually get lost in the circuitry. The catch-22 is that extra voltage produces more heat, and heat is one of the things that causes poor gate connection because heat increases circuit resistance. If you don't believe me, look at superconductors; they require supercooling to lower the resistance of the circuit.
     
  11. Dragonpet

    Dragonpet Notebook Evangelist

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    You are right, I understand how Voltmodding works, that's why I mentioned that my temperature was only around 60-70s C when I game which gives me some headroom for voltmod, plus I use Cooling pad and manages my fan manually. I was just hoping for a guide or tips from someone who has actually tried to change volt on 8600m GT, I don't want to set it too high so it fries.