GTX 1080 FTW Volatge Limit flag always up

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Relentlessly
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2016/10/29 12:41:48 (permalink)
Hi guys,
 
Just a quick question. I’ve had the above card for around 8 weeks happy with the card. However, I would like to understand why the voltage limit flag is always up when running stock. I have never overclocked the card but have adjusted the fan curve to be more aggressive.
 
I also noticed that the back plate gets hot during normal operation and after seeing the recent events I guess this can be normal for some cards (have to say I'm a little disappointed with recent events tbh).
 
Below is a capture of my card running DX11 Heaven ultra x8 for around 15 minutes.
 
The voltage limit flag is up as soon as sets go to the GPU, however the voltage can still vary slightly from 1.043 to 1.050 etc. My question is this; I assume this is GPU boost 3 after reading a sensor within the GPU?. Or is this normal for everyone? The card seems to be being throttled yet the power and temp limits are way below the limit so I can only assume it is the voltage limit flag causing boost to drop down from 2012MHz stock to 1974MHz which is where the cards sits the whole time during normal use sometimes it does pop back to 2000MHz.
 

 
I’m a computer science research student (PhD), unfortunately, not an electrical engineer, only gone from logic gate up no material science. I've looked into the architecture of the EVGA FTW PCB but am still not sure what is causing the above to happen. Is the GPU requesting so fab quality affects this or another component requesting this. So I was wondering if someone could explain this to me please. I was under the impression that I could adjust the voltage if I wanted to in the future under liquid cooling (probably going to get EK block next few weeks considering the VRM issue), but if this is throttling the card I'm not sure how I could overclock from here.
 
Anyhows let me know or point me to somewhere that'll help me understand this please.
post edited by Relentlessly - 2016/10/29 12:59:26

Attached Image(s)


Windows 10 64bit anni edition 1607 
Asus Sabertooth Z170s TuF 
i7 6700k 4.2 GHz 
32 GB DDR4 Corsiar lpx white 3000MHz 
EVGA FTW GTX 1080 
Samsung 850 Evo 512GB 
Segate 1TB Hybrid HDD 
Corsiar HXi 850 
AOC 24inch 1920x1080 x3 
NZXT HUE+ 
Phanteks Enthoo Primo white 
CH products Fighter Stick/Throttle/Peddles 
Razer deatheradder chroma 
Corsair K50 keyboard
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2 Replies Related Threads

    Sajin
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    Re: GTX 1080 FTW Volatge Limit flag always up 2016/10/29 17:54:04 (permalink)
    As long as your card is running at advertised clocks your card is fine. Hitting the limit will affect your max overclock just a bit. RMA is the only solution to this problem.


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    Relentlessly
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    Re: GTX 1080 FTW Volatge Limit flag always up 2016/10/29 19:27:21 (permalink)
    Sajin
    As long as your card is running at advertised clocks your card is fine. Hitting the limit will affect your max overclock just a bit. RMA is the only solution to this problem.




    Hi Sajin,
     
    Thanks for replying. Yup the card sits around 1974MHz no matter what I do which is of course not bad at all from factory. I just wondered what exactly this is.

    Windows 10 64bit anni edition 1607 
    Asus Sabertooth Z170s TuF 
    i7 6700k 4.2 GHz 
    32 GB DDR4 Corsiar lpx white 3000MHz 
    EVGA FTW GTX 1080 
    Samsung 850 Evo 512GB 
    Segate 1TB Hybrid HDD 
    Corsiar HXi 850 
    AOC 24inch 1920x1080 x3 
    NZXT HUE+ 
    Phanteks Enthoo Primo white 
    CH products Fighter Stick/Throttle/Peddles 
    Razer deatheradder chroma 
    Corsair K50 keyboard
    #3
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