Trying to undervolt GTX980M (Maxwell Bios Tweaker)

Discussion in 'Gaming (Software and Graphics Cards)' started by DaReference5754, May 6, 2017.

  1. DaReference5754

    DaReference5754 Notebook Guru

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    Is anybody here who is an expert with "Maxwell Bios Tweaker"?

    My GTX 980M runs @1,043V under 99% load and in games. I can overclock +100MHz easy without voltage-increase in old games.
    However, in 3Dmark or Battlefront the card doesnt boost, cause of powerlimit (this tells me GPU-Z), so I want to undervolt.

    I am sure the GPU can handle the standard boost clock with lets say, 1,037V.

    [​IMG]
    When I limit this one value (P00 max-state) to 1037,5V will this card be undervolted?
    Before I flash I want to ask.
    I havent change any setting (original Temp-limit, clocks etc.), I ONLY want to decrease voltage under full load (P00 state)
    - 5754
     
  2. jaug1337

    jaug1337 de_dust2

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  3. pipyakas

    pipyakas Notebook Enthusiast

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    Can I manually disable power throttle in maxwell tweaker? My 840M is also having power limit issue (which I made a post about here), and while I figured out how to undervolt it limits the tweaking and overclocking a lot
     
  4. jaug1337

    jaug1337 de_dust2

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    We can ask him :D

    He is a busy man. @Prema

    Otherwise, check the TI forums, he is fairly active there too!
     
  5. pipyakas

    pipyakas Notebook Enthusiast

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    Yep, he's a busy man o_O so I'm not betting my luck on asking him although he's obviously the one person doing it
     
  6. DaReference5754

    DaReference5754 Notebook Guru

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    Yes, u can do that und "power table" und raise the limit and flash the new vBios.
    In the meanwhile I really managed to undervolt my 980M by -25mV, now running @1,018V stable @1180MHz core.
    never exceeding 79C and rarely powerthrottling (only under really heavy load, but then max to 1150MHz or so).
    maybe I will try 1,000V in the future but for now I am happy with its performance.

    U have 2 Options: Either u undervolt, so that ur GPU will draw less power and stay "more often" in the TDP-zone (but then ur clocks wont be that high like before) - or u raise the power limit, but then ur GPU runs hotter and u shorten the lifespan of ur GPU (especially if u then overvolt).
    Its ur choice.
     
  7. pipyakas

    pipyakas Notebook Enthusiast

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    I already undervolted (from default at 1.131v to 0.9260v @ 1124mhz) and get stable performance without throttling, but I also noted that the thermal limit is 80C and I dont mind reaching that, but anything higher than 1.000v would cause frequent stutter for me as the clock constantly drop to 135mhz then shoot up to maximum because of Pwr throttle :confused: and it seems that the throttle became worse under certain games and load type, not necessarily being stressed at 100% load
    Anw, i only have these in the power table tab, what exactly are they and what do I need to do to disable power throttle? o_Oo_O
    [​IMG]
     
  8. cleber

    cleber Notebook Enthusiast

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    Sorry to be late... i have a M15x and i had did a lot of modified vbios with Maxwell Bios Tweaker. My GOAL was aim a 980m with low TDP and heat with similar performance of a stock 980m or at least between a 970m and 980m.

    The first thing that come in our mind was temper with voltage table. I already tried do some mods and got no much sucess with this. For me the best choice was increase Boost table so you increase entire table of voltages for all clocks and you dont need mod only the max volt, because you already had moded entire table after increase frequency. Is like to do a overclock without change the slider in afterburner. So for me i managed to get max 1202mhz in boost table. After that i got crashes in games. So i am using max clocks for each volt in the table. The proof of that is when i do some overclock in afterburner my card crash because the clocks are at maximum for that voltage table.

    If it was helpfull please send a feedback.
     

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  9. Raidriar

    Raidriar Notebook Prophet

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    Anybody figure out how to undervolt without power throttle? I really want to lower 980M to like 0.9750V.....
     
  10. MahmoudDewy

    MahmoudDewy Gaming Laptops Master Race!

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    I am interested in exactly the same, maybe we can ask @Johnksss@iBUYPOWER to modify his vBios for some beer money to run at stock clocks and 0.9870V (Lowest stable voltage for stock clock for my card at least in extreme load conditions)
     
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