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How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner?

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himmatsj
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2016/09/30 06:57:51 (permalink)
Just curious, since on AMD's side they've been undervolting their cards for a long time with great success.
 
The main purpose of undervolting is to reduce power consumption, which directly results in lesser heat being produced by the GPU, thereby leading to lower temperatures. Very handy for people who have sub-optimal case airflows or live in hot environments.
 
But, I'd like to know, are there any dangers to undervolting using the voltage curve in MSI Afterburner? Has anyone here done it? Is it safe?
 
Thanks!
 
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    CoercionShaman
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 07:09:54 (permalink)
    Not done it personally.  These Pascal cards already have a lower TDP anyway.
     
    AMD did it because they had miniature ovens with the power draw.

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    the_Scarlet_one
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 07:18:10 (permalink)
    Undervolting may result in an unstable system and lock ups, but all you would need to do is put the curve back up to correct it. It shouldn't hurt the card.
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    himmatsj
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 07:18:56 (permalink)
    My PC casing has poor airflow + I live in a hot environment though.
     
    I don't want to do anything fancy. All I want to do is lower the voltage level of the 4 highest clockspeeds at stock settings.

    So it's like this (roughly):

    1075mV - 2012MHz

    1050mV - 2000MHz

    1025mV - 1987MHz

    1000mV - 1975MHz

    What I want to do is simply set the points such that 1000mV corresponds to 2012MHz. Meaning, offset the voltage by -75mV.

    My logic is that if I can run the card overclocked to 2150MHz stable (corresponding to ~2100MHz at 1000mV), then at stock settings 1000mV should have no issue handling 2012MHz.

    Not sure if I am making sense and if you follow me though.
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    the_Scarlet_one
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 07:20:32 (permalink)
    Like I said above, if it results in an unstable system, just bump it back up.
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    himmatsj
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 08:25:19 (permalink)
    This is what I have: http://i.imgur.com/r9Hk7XB.png

    All I did was increase the offset by 38 MHz.

    Now, if you look at that graph of mine, 2012 MHz corresponds to 1000mV. Question is, how can I make the rest of the voltage settings flat? I don't want a voltage above 1000mV used. I want 2012/1000 to be the max, but below it to be variable as per normal. Is there a way to do this?

    Thanks!

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    HeavyHemi
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 08:35:13 (permalink)
    himmatsj
    This is what I have: http://i.imgur.com/r9Hk7XB.png

    All I did was increase the offset by 38 MHz.

    Now, if you look at that graph of mine, 2012 MHz corresponds to 1000mV. Question is, how can I make the rest of the voltage settings flat? I don't want a voltage above 1000mV used. I want 2012/1000 to be the max, but below it to be variable as per normal. Is there a way to do this?

    Thanks!



    As far as I know, there is no way to set a voltage cap without modifying the BIOS. The best you can do is come up with a combination of settings that will typically keep your voltage under 1v. Probably decreasing the power target will accomplish this for the most part.

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    Sajin
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 10:56:04 (permalink)
    Scarlet-Tech
    Undervolting may result in an unstable system and lock ups, but all you would need to do is put the curve back up to correct it. It shouldn't hurt the card.

    +1
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    somethingc00l
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2016/09/30 11:21:18 (permalink)
    It's safe but I don't think you will have a lot of luck (not sure it even works) see here: http://www.tomshardware.com/reviews/msi-afterburner-undervolt-radeon-r9-fury,4425.html
     
    >If you're aggravated and want to see the same gains from Nvidia's GPU, get ready for disappointment. Lowering the GPU's voltage just isn't in the cards because it's achieved by decreasing the internal power target. Since GPU Boost is a very fragile system, every little drop has a negative impact on clock rate. In turn, this results in a massive performance hit. It's not something to complain about, per se. Nvidia simply has its mechanism optimally balanced, so there's practically no room for improvement. Consequently, MSI Afterburner doesn't even offer the option to lower the voltage. It can only be increased.
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    turina3
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2017/09/01 20:19:43 (permalink)
    Well, I wanted better temperatures because I hate fan noise, so I  lowered the frequencies and voltages
     
    This  is what I did with my evga gtx 1080 SC https://imgur.com/XSX7bpm
     
    I´ve tried another one a bit lower 0.875 mV - 1835 Mhz and it´s stable if I have activated vertical sync  https://imgur.com/sO1RhF2
     
    As 60 fps it´s really fine for me, I activate vertical sync when there too many fps; More fps, more Mhz needed, more hot, more noise.
     
    On the other hand I love ultras textures and the better shadows and aliasing efects.
     
     
     
     
     
     
    post edited by turina3 - 2017/09/02 11:59:14

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    shadowoak
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    Re: How safe is it to undervolt a GTX 1000 series GPU with MSI Afterburner? 2017/09/02 10:18:00 (permalink)
    I have my 1080ti undervolted. It is actually very beneficial for Pascal cards. Yes, you can get unstable if you go too low, just like when you go too high when overclocking. 
    Pascal has a hard voltage ceiling because of GPU boost 3.0. Hitting that voltage ceiling even without hitting power or thermal limits will make the card throttle down a little. You end up bouncing up and down the limiter and getting in consistent clockspeeds. 

    I have mine at 2050mhz at 1025mv-1050mv, not home to check. It gets me a steady 2060 during benchmarks, and actually gave me a higher score than doing just standard overclock and putting power target to max.
     
    himmatsj
    This is what I have: http://i.imgur.com/r9Hk7XB.png

    All I did was increase the offset by 38 MHz. 

    Now, if you look at that graph of mine, 2012 MHz corresponds to 1000mV. Question is, how can I make the rest of the voltage settings flat? I don't want a voltage above 1000mV used. I want 2012/1000 to be the max, but below it to be variable as per normal. Is there a way to do this? 

    Thanks!



     
    To get a flat voltage, you will just have your curve flat like you have it. It will use the lowest voltage for that clockspeed. Afterburner might adjust your curve after you save it, so you just have to go back and readjust it again.
    post edited by shadowoak - 2017/09/02 10:28:46

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