Page 2 of 2 FirstFirst 1 2
Results 11 to 12 of 12
  1. #11
    ROG Guru: Yellow Belt Array
    Join Date
    Jun 2017
    Reputation
    10
    Posts
    204

    Quote Originally Posted by chappmaster View Post
    does anyone have a video or pic guide of how to undervolt the gpu i mean people say in text how to do it but no one really shows it in pics or videos can anyone help with this im on Gl702Vs as well 75hz lets see those pics or videos of how to undervolt the gpu thxs
    Install Afterbuner.

    - enable Start with windows, start minimied, unlock voltage control, unlock voltage monitoring.

    - click the "Startup" button to enable the profile to be applied after a reboot

    press ctrl-f

    make a flat line all the way across to effectively limit the GPU to 1721mhz @ 800mv. run like this for a couple days in benchmarks and games to make sure your GPU can handle 1721@800mv.

    If things go well raise the whole solid line upto say 1759@800mv. if things run well try upping it more.

    The idea is to get the GPU running as high MHz possible while limiting it to 800mV.

    The 3rd image is my curve that I'm running now. I'm allowing up to 1873@900mV. ( run my fans boosted to 40%, laptop runs on a cooler and I drilled circular holes in the bottom panel so the cpu/gpu fans get direct air).

    Important, when playing around with the curve constantly use the apply button (checkmark button) before saving a profile. It kind of auto-adjusts the line each time you press, just something you have to play around with a get used to..

    that's it!
    Miniatura de Adjuntos Miniatura de Adjuntos afterburner.PNG  

    curve 1.PNG  

    curve 2.PNG  

    apply button.jpg  


  2. #12
    ROG Guru: White Belt Array
    Join Date
    Apr 2017
    Reputation
    14
    Posts
    91

    Quote Originally Posted by chappmaster View Post
    does anyone have a video or pic guide of how to undervolt the gpu i mean people say in text how to do it but no one really shows it in pics or videos can anyone help with this im on Gl702Vs as well 75hz lets see those pics or videos of how to undervolt the gpu thxs
    For example, see this thread.

    I did not perform undervolting, but I've been monitoring net for info and find some "manuals". Maybe this tips will help you.
    For GPU: this, "How to Undervolt" section.
    Main points: download use MSI Afterburner (it's free on MSI website), go to "MSI afterburner properties" (gear-form icon under sliders) and select all graphs in "compatibility settings" (as I suggest, we need primary "Unlock voltage control" and ""Unlock volatge monitoring"). Click Apply.

    Press Ctrl+F, you will get voltage curve.
    Choose point on curve corresponding to nominal voltage (search for voltage curve for yours GPU in internet ad keep in mind that every GPU, even the same cards in same laptop model are unique in terms of allowed undervolt), for example, 1000 mv and (that seems to be important: I find this in two independent sources) first time set frequency you need with Core Clock slider (the entire curve will raise upwards, so you make you GPU handle desired frequency on lower voltage). Showed on this video:

    You can see, author lauches GPU-Z bencmark in order to warm up GPU. This is one thing I don't have exact answer, I mean when to do undervolting: when your card is properly warmed up or opposite, I met tips for both variants. However, I more trust latter, that GPU should be fairly cool and not be using GPU Boost 3.0, as it does under load.
    Then you can manually drag all other points to the right to your desired voltage so that they all match the frequency at that voltage (i.e. make a flat line for higher voltages). Edit points to the left so they make a smooth transition to the point that you firstly edited with core clock slider: "You don't want to see a large, sharp jump in the curve, as you can actually lose performance that way" (c) that link to reddit. So, the video above is a bit incorrect in that term.

    Also, analyse voltage profiles for your GPU that you encounter in internet with a bit of skepticism: aside of sharp transitions mentioned above, it seems (obviously?) to be a bottleneck for frequency on current voltage, so if you set frequency too high, GPU will loose performance, see this thread on reddit.

    You also need proper benchmark, and games are better that synthetic.

    I did not try all this, but according to onjax thread on this forum (very first link), you can't kill GPU with undervolting. Anytime, you can reset voltage curve to default (icon with rotating arrow next to "MSI afterburner properties").
    Last edited by Lord Obsidian; 02-22-2018 at 09:54 AM.

Page 2 of 2 FirstFirst 1 2

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •