Help Power Supply for overclocking

[light001]

So basically, i am looking to overclock my Gtx 980 properly, i am confused with things i have herd and read, Regarding the +Mv and Power Limit % And Ov Limit according to Msi Afterburner.
I have a 850w Power supply, so i should have extra, however my concern is how do i know if my overclock is starved for power or if my overclock has too much power thats going to waste and if these are causing the crashes? Any help would be awesome! even a link to explain these is fine. I see this OV Limit on msi after burner and the values are either 0 or 1, and ya sometimes its 1 and sometimes its 0. is this important at all? Also while i have my GPU Z up and running their demanding little box thing, it seems my voltage will not go higher then 1.2500 ,

its weird because in some games or apps its like the MV wont activate? i will know this because with it it also boosts the clock abit, and i can check the voltage, where as others it activates and ya....or something like that >.< i dunno its confusing. Help please

But ya its like some applications are not getting the boost to the clock from the MV. even tho they run the gpu at 99%, and others do instantly, and again some games seem to hate overclocking and others thrive on it, like blizzard games crash if i have a high overclock and i dont have the time to figure out which variables it is so i just play with a lower overclock, not that many blizzard games are worth overclocking for with a gtx 980 anyway, but still..it would be nice to have a nice global overclock and then a low overclock and a extreme overclock for benchmarking.

 

[Hlsgsz]

If your PSU is of good quality, it would suffice even for overclocking two of those cards.

 

[light001]

i only have 1 card >.< what did i type wrong haha

 

[turkey3_scratch]

There is no such thing as "extra power". "Having plenty of power", "running out of power", "hitting a limit on power", "not having enough power" - these are all unrealistic scenarios in computer power supply applications that are only achievable with overridden protection circuitry of the PSU, a customized specific type of load combination, and a specific PSU design that has overrated MOSFETs to prevent burning.

 

[InvalidError]

You know you are wasting too much power on an overclock when increasing the voltage yields no significant benefit in extra clock frequency or stability. When you get there, it is a sign that you may have gone a too far for comfort.

 

[Hlsgsz]

i only have 1 card >.< what did i type wrong haha

I said "would suffice". If it can run 2 it can definitely run one.

 

[light001]

ok im getting mixed answers, and the first 2 comments make no sense, the 3rd well abit less explained then i was hoping.

So if i run defaults and just increase core voltage while running Gpu'z render test, playing with the core voltage adds some Mhz on the core clock. so im thinking that that application is meant to draw out the most over everything, because if i play a game and have the core voltage only increased, i think there is a variable there because it does not necessarily increase the mhz, which suggests it is not using that, but then is that fine to just leave the core voltage turned up to the max for the time when it is needed/used? same thing with the power limit %, is it good to just leave that at the highest to be used when needed? and thats also what i am trying to figure out because i have seen a youtube video ( https://www.youtube.com/watch?v=9eqUZK6K5j4 ) he gets his voltage up to 1.2750, where as my card using same techniques only goes to 1.2500, and his power limit looks to be only 100%? i dunno agh weird