I've had a couple hrs to sit with my 1080. I have it +85 +300 with 120% power stock voltages temps dont pass 67c.
Its stable with fire strikes stress test however soon as I tick +90 on the clock it fails and fails hard.
Does any one have some experience increasing the voltage on a 1080 like how much is acceptable and safe etc.
Im not looking for alot but a even +100 would make my day.

RMA it that is totally no bueno
 
I have stock voltage 
+170 GPU 
+500 Memory 
70 C  

orlando2542
RMA it that is totally no bueno
 
I have stock voltage 
+170 GPU 
+500 Memory 
70 C  

 
Overclocking potential over what is advertised as the clock speed is not a reason to submit for warranty replacement.
 

tubbing
I've had a couple hrs to sit with my 1080. I have it +85 +300 with 120% power stock voltages temps dont pass 67c.
Its stable with fire strikes stress test however soon as I tick +90 on the clock it fails and fails hard.
Does any one have some experience increasing the voltage on a 1080 like how much is acceptable and safe etc.
Im not looking for alot but a even +100 would make my day.

 
Under load with your stable over clock what are the boost clocks you are reaching?

Im curious as well.  Ive been trying to find time to test more but being that the stock clocks have handled everything on my monitor Ive been enjoying my games more than messing with the clocks.  I really wish they would get the OC scanner working better, great concept.

During benching it runs at 2025 solid during firestrike stress test. But soon as I move the slider to anything plus 85 it fails regardless how much voltage I throw at it.

Yup, that happens. Not every card is capable of a great OC.
 
My EVGA 1070 FE is stable at +250 +500 and runs around 2150 core in games. I didn't expect that at all, my R9 390 was only stable at +20 over standard core.

great how companies advertise with "made for overclocking" knowing that it's just a big lie.
it's always the same exactly like Intel's XMP, "it's there, buy it but no warranty it will work for you"...

sahafiec
it's always great how companies advertise with "made for overclocking" knowing that it's just a big lie.
it's always the same exactly like Intel's XMP, "it's there, buy it but no warranty it will work for you"...

Bull. The cards are advertised at a certain spec clock speed and often as "overclocked" but I almost never see ads saying that a card is great for pushing beyond it's listed spec. I haven't seen any EVGA 1080 ads for OP's card saying that. Because it would be stupid.
 
You *can* overclock most hardware, but no one is guaranteeing you a certain result. I've had several cards over the years that would barely overclock. It's bad luck, but it isn't a problem with the actual card. If the card meets specs then it's doing it's job. This time around my 1070 is stable at a wonderful overclock, this time OP's 1080 isn't able to be pushed very far beyond spec. That's just luck and card lottery. Expecting a certain OC or to be able to RMA a product because it doesn't go far enough beyond it's actual spec performance to make you happy is plain stupid and over entitled. 

So far settled at +100 to core and +350 on memory with stock voltage.  Might could get a little more but it already boost to nearly 2.1 and with over +150 on the core I was getting some artifacts.

Even on stock settings it seems like my 1080 SC runs quite hot..... i have to move to fan profile to 70% manualy just to keep it in the low to mid 70s.... is this normal?
Its quite noisy at 70%....