gpu not stable over 0.850v?

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henkkrakers

Commendable
Mar 5, 2017
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so i have tried overclocking my 1060 however for some reason no matter what i do my card is unstable over 850mv. the card is supposed to run at 1.063v by default however the core clock flucuates like crazy when i keep it above 850mv. i can put my core clock +150 or -200 it is 100% stable at 850mv but anything over 850mv the core clock starts going crazy.

i have done a bunch of benchmarks and found kombusters gpu core burner v2 (furry donut) to be the most taxing and caused fluctuations above 850mv.

I want a 100% stable gpu. is my card broken? is it something to do with the power supplied to the gpu? or am i being an idiot and you don't need to stable core clock? I want 100% stable 60fps in all my games which is why i want stable gpu.

spec:
psu - corsair cx600 (600w supply) 480w garantueed
gpu - msi 1060 https://www.amazon.co.uk/gp/product/B01KF90IY8/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
cpu- i7 4790k


wattage required according to calculator 430w, which is close to the guaranteed.
 
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weberdarren97

Glorious
Aug 10, 2015
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There is more to power delivery than just voltage. You also have to take into account for amperage. As you raise voltage, the amperage goes down. This often times puts more stress on the VRMs since voltage is higher. Even though you're drawing less amperage, the VRMs are so heavily taxed by the increased voltage that they can't handle the amperage of the highest clock and are forced to reduce the clock in order to prevent the card from crashing.

This is the limit of your card.

Also, lower voltages are better than higher voltages. Just because you can have a higher voltage, doesn't mean you need a higher voltage. The only times I recommend increasing voltage is when you're trying to overclock and the system becomes unstable at the current overclock. Throttling the clock down is not a symptom of voltage being too low, it's a symptom of voltage being too high.



Nothing is guaranteed with those low quality units, other than the fact that they often cause systems to crash when paired with high end GPUs like the GTX 1080 or 980 ti.
 
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henkkrakers

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Mar 5, 2017
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interesting. thanks for the information although i don't understand fully what you mean since i don't truly understand electricity that well at all.

if the card is designed to use 1.063v but is stable on all benchmarks only at 0.85-0.90v thats fine?
i currently have my gpu core clock limited to max out at 1950mhz at 950mv. if I could get my mv to say 1100mv (1093 max set by nvidia) couldn't i potentially put my core clock up to like 2000-2100mhz. but since its unstable at a voltage of 850mv+ i can't get that high. I realise that i'm talking out my arse when i talk about this but i see voltage limit as the thing stopping me from getting a higher stable core clock speed. am i wrong? shouldn't my card be capable of working at 1063mv as it was designed to work there by default, does it even matter? i'm curious what you know since you obviously know more about the subject than me.
thanks

 
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weberdarren97

Glorious
Aug 10, 2015
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It sounds like you're trying to overclock without first doing your research.

A higher voltage means more power in the GPU core. More power means more​ heat. Nvidia designs their cards with coolers that are just enough to handle its regular heat output. Since increasing voltage increases heat output, it's normal for the card to throttle when running at a higher voltage. This behavior seems annoying, but it's an important step in making sure the card doesn't overheat.

There is also this phrase that gets thrown around called the silicon lottery. However, many fail to describe what this actually means. It means that chips made of silicon (like the ones in your card) are manufactured so quickly by machinery that each one of them contains a unique imperfection. Even two of the same cards in two identical systems usually do not overclock identically to each other. Just because others are getting to 2050MHz with your card doesn't necessarily mean that all copies of that model can do that.
 
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henkkrakers

Commendable
Mar 5, 2017
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yeh but my temp limit is 92c. my card never gets above 65c ever no matter what settings i use. even when i put voltage to the absolute max in any benchmark it never gets near to the limit not even anywhere close.
it would take a lot of effort to throttle my card. it never gets that hot at all. I would need to apply a fan heater to my computer to make it go to the limit
 
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