I just installed my 1080 SC 2 the other day and am using Precision X OC just to monitor temperatures, and while looking for a way to turn off the super bright leds I noticed where it says "voltage" to the left of "power target" its at 625w? Is that a W I cant tell, it jumped up to 850 too and as my psu is 550w I was momentarily freaked, but logically that can't be so, so what does that number indicate?

https://imgur.com/a/Et2pt

Also what is the default setting for the "voltage" slider? I accidentally clicked it up to 100 and am not overclocking so want it at the default value.

Lastly, is there any way to turn off the bright white led's? I see the little sensor temp led button but it doesn't stop the spot light coming out the rear of my computer...lol

Cool GTX
mV = millivolts --> Not Watts
 
Lower right --> click ON the gear icon, that will open some Tabs - Fan Curve & LED
 
Default mV = down all the way
 
It is safe to use the XOC settings, Only GPU & Mem Clocks can be set too high for stability
 
 
My post might help you:  https://forums.evga.com/FindPost/2776952
 
 
 PSA (public service announcement)  Do NOT set XOC to start with Windows, until you know the setting will not crash your GPU. 
If you enter unstable numbers -- you do not want the reboot after the system crash to Load those settings - right
 
 
Read this - though different OC software --> Same Rules apply 
Guru3d 1080 overclock guide

Wow, Thank You! That is the clearest and most thorough answer I could ask for. Unfortunately the option for Appearance LED is dimmed out.. I think I cannot change it on this card?

Moving thread to evga software subsection.