Rtx 3080 msi afterburner voltage curve?!

Discussion in 'Videocards - NVIDIA GeForce' started by CalinTM, Jan 18, 2021.

  1. CalinTM

    CalinTM Ancient Guru

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    Anyone tried the voltage curve on rtx 3080?

    I select 1.1v in the curve with the desired frequency and it shows in load 1.1v solid.
    But when I want to select a little higher than 1.1v it still shows 1.1v
    Basically every voltage higher than 1.1v it doesn't apply, and the frequency also.
    For example I select - 290 mhz to undervolt the whole curve, then I select 1.1v with 2070 MHz and it works flawlessly.
    If I select the same 2070 MHz but with higher voltage, the volt doesn't apply in load and the frequency is a lot lower than 2070 mhz.

    Using a 3080 aorus xtreme.

    If my understanding is correct the card lacks power limit?
    But if I run a test and look at gpuz it says relative voltage and voltage as the limit, and a little power with green. Orange and blue in gpuz.

    Someone can explain these to me pls?
     
  2. Mda400

    Mda400 Master Guru

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    Voltage is hard-limited at that area, around 1.093v as was Turing and Pascal before it.
     
  3. CalinTM

    CalinTM Ancient Guru

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    On 1080 ti I could raise it at 1.2v
     
  4. Mda400

    Mda400 Master Guru

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    By unofficial means, yes.
     

  5. CalinTM

    CalinTM Ancient Guru

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    I remember I used a xoc bios on 1080 ti.

    There is a custom bios for rtx 3080? Or my model, aorus xtreme?
     
  6. Mda400

    Mda400 Master Guru

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  7. CalinTM

    CalinTM Ancient Guru

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    And works for rtx 3080 aorus xtreme?
     
  8. Mda400

    Mda400 Master Guru

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    you can cross-flash using nvflash, since it is the same GPU model (3080), but performance may not be as expected since you are cross-flashing a bios built for one company's aftermarket PCB to a different company's aftermarket PCB.
     
  9. Maddness

    Maddness Maha Guru

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    Mda400 likes this.
  10. CalinTM

    CalinTM Ancient Guru

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    I have F4 bios installed
     

  11. Shadowdane

    Shadowdane Maha Guru

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    Have fun trying to cool that thing with the 1.1v unless your on water... The power draw on these 30 series cards is nuts at stock or +100% voltage target. I undervolt my MSI 3080 Suprim X to 0.950v @ 2010Mhz. Same boost clocks as stock but a lot lower voltage and power draw generally stays below 350W.
     
  12. Agent-A01

    Agent-A01 Ancient Guru

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    No point going over 1.1 tbh, you'll run into power constraints and/or heat issues.

    I run 2070mhz @ .96v and I see high 300s already.
     
  13. CalinTM

    CalinTM Ancient Guru

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    I'm running at 1.1v with 2070 MHz and in games with fps cap at 75 I see 55-63 degrees.
     

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