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    CPU and GPU voltage raise - Good pointer

    Discussion in 'Alienware 17 and M17x' started by inzelux, Nov 7, 2011.

  1. inzelux

    inzelux Notebook Evangelist

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    Hi guys!
    I was wondering, how much increase increments in voltage should there be done at the time, and how much raise in Front side bus and core clock (and memory clock for GPU) should be done to accomodate the voltage raise when overclocking both an processor and a graphics card?

    Also, is there any risk for over-voltage'ing? (I mean, if i raise the voltage without raising the clocks, would that result in something?)

    Also - What should the max temps for both GPU and CPU be at load?

    Cheers!

    - Scott.
     
    inzelux, Nov 7, 2011
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  2. SlickDude80

    SlickDude80 Notebook Prophet

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    Be careful if you're gonna raise voltage.

    Overclocking doesn't usually cause problems. If the card can't take it, it will freeze or BSOD...however, the card won't brick.

    Raising voltage too high will fry your cards
     
    SlickDude80, Nov 7, 2011
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  3. inzelux

    inzelux Notebook Evangelist

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    I see. I've been at overclocking, but only mildly untill now as the voltage is stopping me from getting higher. (BSOD on GPU clocking after 100mhz raise in coreclock, etc.)

    Therefore, i'm trying to get this about voltage right, as i think i'm ready to try the risk and push it a bit further.

    How much should the voltage be increased by for every "step" you try to push a component further (like, 0.005 V?), and how much increasement in FSB / coreclock + memoryclock should you apply to the raised voltage?


    Also, how would i know that my components are about to burst? Is it all about the temperatures, or is there something else that will tell me that the voltage is pushed too far? (Except the BSODs and crash)

    - scott.
    - Scott.
     
    inzelux, Nov 7, 2011
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  4. SlickDude80

    SlickDude80 Notebook Prophet

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    Temps and common sense are your friends.

    You are thinking about raising voltage on CPU and GPU?

    My only advice is to take it slow...raise it up slow in the smallest unit possible. As to how far to raise your core and mem clocks, you have to experiment.

    Unfortunately, i have no idea how high 5870's will go so maybe someone can chime in
     
    SlickDude80, Nov 7, 2011
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  5. inzelux

    inzelux Notebook Evangelist

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    Thanks for the answers so far.

    Yes - i'm thinking about pushing both the CPU and my GPUs up a notch. I was thinking about getting like a 2,6 ghz out of the CPU and then 900/1200 for the GPUs.




    As for the 5870's, it will need a vBIOS flash every time i want to raise the voltages. Would editing the vBios many times possibly brick the cards?


    - Scott.
     
    inzelux, Nov 7, 2011
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  6. SlickDude80

    SlickDude80 Notebook Prophet

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    There is a chance everytime you flash your bios that something will go wrong..so the fewer times the better imo
     
    SlickDude80, Nov 7, 2011
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  7. inzelux

    inzelux Notebook Evangelist

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    Ok. But, as long as i keep an original copy of the vBios with original card settings, i could "un-brick" them in case of a faulty vBios flash?

    - Scott.
     
    inzelux, Nov 7, 2011
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  8. Mechanized Menace

    Mechanized Menace Lost in the MYST

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    No, unless you had a bad flash. What voltage/ clock settings are you running? I am running dual 5870's at 850/1200 @ 1.1V on each card stable.
     
    Mechanized Menace, Nov 7, 2011
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  9. SlickDude80

    SlickDude80 Notebook Prophet

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    If you have a bad flash, don't restart the computer...if you see an error message during your flash, reflash the the vbios with your backup right away
     
    SlickDude80, Nov 7, 2011
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  10. inzelux

    inzelux Notebook Evangelist

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    Dual 5870's at 800/1100, at first for a few days, it went fine, but today i got heavy BSODs and bad graphics even in Windows. (Spikes, drag etc.)
    Stock voltage, i assume that the voltage is what would be the problem.

    How would i know that my power supply isn't enough? That the PC won't turn on?
    - Scott.
     
    inzelux, Nov 7, 2011
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  11. Mechanized Menace

    Mechanized Menace Lost in the MYST

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    Hmmm, What VBIOS are on these? Are they the Dell 5870's? Can you post a SS of GPU-Z for both cards? Do you have the 150W or 240W adapter? If it is not enough power the Blue ring will turn off indicating that you tripped the PSU.
     
    Mechanized Menace, Nov 7, 2011
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  12. inzelux

    inzelux Notebook Evangelist

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    I will get vBios info posted ASAP!

    The adapter sais Flextronics 100-240V.
     
    inzelux, Nov 7, 2011
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  13. inzelux

    inzelux Notebook Evangelist

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    inzelux, Nov 7, 2011
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  14. Mechanized Menace

    Mechanized Menace Lost in the MYST

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    Ya, that is the new VBIOS. What GPU's did you have before you got the 5870's?
     
    Mechanized Menace, Nov 7, 2011
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  15. inzelux

    inzelux Notebook Evangelist

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    I had a single GTX260m card.
     
    inzelux, Nov 7, 2011
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  16. Mechanized Menace

    Mechanized Menace Lost in the MYST

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    Hmmmm, 5870's in the R1 has been really hit or miss sadly. There was a thread I have been searching for it, but haven't found it yet. What exactly are the problems that you are having? I know you kept getting the BSOD's are you still getting them?
     
    Mechanized Menace, Nov 7, 2011
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  17. inzelux

    inzelux Notebook Evangelist

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    Are you thinking of DannBoy's thread?

    Currently, i've reinstalled Windows and started off with the stock DELL drivers.
    Right now, everyting is running fine. I will be testing GPU utilization, etc. Tomorrow, which in the beginning was my problem. (Bad GPU utilization.)

    I will do a re-post tomorrow when i know how everything is going.

    - Scott.
     
    inzelux, Nov 7, 2011
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