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[Official] NVIDIA GTX 1080 Owner's Club - Page 51

post #501 of 11183
Quote:
Originally Posted by Petet1990 View Post

need help..just picked up a Zotac 1080 and the voltage is locked...any thoughts?

Download the lastest msi afterburner beta and go to settings to unlock voltage.
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post #502 of 11183
Quote:
Originally Posted by spencer785 View Post

Yes and all 1080's are hitting a wall at 2.1ghz

My 2100 MHz FE is only 13% faster on average than my 1520MHz 980Ti. If the 1080 tops out around 2100, even on custom cards, that's a horrid upgrade.

To add insult to injury I went from one of the best cooled/quietest 980Ti's (Lightning) to this .50 cent piece of crap cooler on the FE making me deaf.
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post #503 of 11183
https://xdevs.com/guide/pascal_oc/#voltsc

Seems like voltage = useless in this case, and with LN2 the 1080 performs worse than the best 980Ti on LN2.

Welp.
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post #504 of 11183
Quote:
Originally Posted by spencer785 View Post

Yes and all 1080's are hitting a wall at 2.1ghz


Some explanation regarding the limit...


Voltage scaling and “1.25V limit”
Quote:
There were some rumors spreading wildly these days regarding “1.25V limitation” or whatever on modified GTX 1080 cards, which requires here few words to explain.

Hardware itself is well capable of getting to that and above voltage output for GPU core, but GP104 chip itself now more sensitive to voltage, than even previous Maxwell generation. Part of it due to thinner physical process, other part due to challenges removing heat from all those tightly packed 7.2B transistors quick enough from 21% less surface area. Those overclockers who did 2200+ MHz on GTX 980 Ti’s are well aware of all things required to achieve those high clocks. Same principle applies to Pascal generation. So if you can manage to keep GPU cooled well and have good voltage delivery to it, you indeed can push higher voltages. Cards cooled by liquid nitrogen during this guide testwork were able to run 1.35-1.4V, reaching speeds over 2500 MHz.

Fact that GTX 1080’s capable of reaching 2.1GHz on aircooling without any modifications confuse lot of people, making them to think that these chips can overclock well past 3GHz on liquid nitrogen cooling. But it’s still silicon, with similar architecture, so reality is bit sour. Yes, it allow to get good performance without extreme cooling, but hides the fact that LN2-cooled 980Ti is still much faster than overclocked GTX 1080 due to more shader cores and better CPC performance.

This also brings and answer to the question if overvolting can help OC on aircooling or watercooling. It does not help, due to thermal, which get only worse. Higher temperature render stability and performance decrease. GPU literally overheats and cannot run high frequency anymore, even though temperature is below specified maximum temperature. So just like in 980/980Ti/TitanX case, over-voltage is not recommended, as it gains no performance improvement.


https://xdevs.com/guide/pascal_oc/#voltsc
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post #505 of 11183
My FE card turned up yesterday. Time to get cracking. Plugged it into my 6700K ITX system for now.
post #506 of 11183
Quote:
Originally Posted by TK421 View Post

https://xdevs.com/guide/pascal_oc/#voltsc

Seems like voltage = useless in this case, and with LN2 the 1080 performs worse than the best 980Ti on LN2.

Welp.

Can we all stop ney saying, it's still going through driver revisions etc, the 980TI is very much mature and had it's drivers finely tuned.
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post #507 of 11183
Quote:
Originally Posted by Benjiw View Post

Can we all stop ney saying, it's still going through driver revisions etc, the 980TI is very much mature and had it's drivers finely tuned.

Those are zombie cards that dont follow any hardware limitations fyi so is good to keep an eye on those statements.

We are not going to LN2 or must of us arent, not me at least!!!!! But its an indication on what to expect with all the revisions of gpus coming.

Not looking good, and i got myself a founders and call it a day, theres no point on waiting for better vrms and more power plugs it just doesnt matter..
post #508 of 11183
Quote:
Originally Posted by Benjiw View Post

Can we all stop ney saying, it's still going through driver revisions etc, the 980TI is very much mature and had it's drivers finely tuned.

In case you haven't been reading that 1080 is just a Maxwell shrink with faster memory and added VR, there isn't anything new architecturally that drivers can improve upon for non-VR gaming. You just don't write drivers that say "hey, you're 16nm now, give me more perf".
post #509 of 11183
Quote:
Originally Posted by CallsignVega View Post

My 2100 MHz FE is only 13% faster on average than my 1520MHz 980Ti. If the 1080 tops out around 2100, even on custom cards, that's a horrid upgrade.

To add insult to injury I went from one of the best cooled/quietest 980Ti's (Lightning) to this .50 cent piece of crap cooler on the FE making me deaf.

Thats about right lol.

980 ti vs 1080 both overclocked aroundish 1500 and 2100 the 1080 is 13% faster
look at this

post #510 of 11183
The 1080 replaced the 980 not the 980ti.
 
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