GTX 780 performance issues

[Ryan Arnold]

First off Hay Guys!

I'm new to this so you have to forgive my newwby ness 

 

I just built my new desktop and for about 3 weeks everything was running smooth as silk.

Then i start to get black screens like some one had pulled my dvi cable out of the back of my monitor my monitor would go to sleep then turn back on after a few seconds this only ever happened under heavy gpu loads.

 It didn't really bother me that much but then it started happening more frequently and so i downloaded evga precision x to see what was happening.

and i found out my clocks speeds were fine and my heat was fine. 

on start up there are no problems my 780 runs as it's ment to i get mid 1450s heaven score and i get good fps is crysus 3 bf3 and what not but after about 5 mins of heavy load my gpu will lower the amount of power it can take down any ware between 60-80 and that devastates my fps it makes me get like 14 fps in crysus and like 20 -60 in bf3 i'm playing on 1920x1080 so that's not what should be happening 

 

My system specs are 

MSI GTX 780 gaming edition OC

Intel 4670k at stock 

2x4g 1600 mhz corsair vengeance

OCZ ZT SERIES 650w 80+ bronze psu (it's not a grate psu i know i had a budget :c)

MSI B85-G43 gaming 

samsung 840 pro 120 g ssd 

Weston digital blue 1tb

corsair H100i water cooler 

 

any help would be much appreciated thanks  

 

 

[niksuto]

How hot is it running after 5 min of heavy use?

[Extingquish]

Could be your power supply, its the only thing I can think of

[nokturrduk84]

I'm not sure, but I suspect power supply. Can you test your system on another (more powerful) power supply? Also be sure gpu driver is up to date

[Wasabiz]

did you try to overclock your GPU? but like the others said it might be your GPU. Try the other PCI power cables and see if it still happens

[Ryan Arnold]

it runs at 60c after 5 mins never really goes above 75 because of room temp and my fan profile 

[Wasabiz]

it runs at 60c after 5 mins never really goes above 75 because of room temp and my fan profile 

runs on 60c on load? or idle?

[Ryan Arnold]

load

[Ryan Arnold]

60-75 c under full load

[Ryan Arnold]

what are your opinions on the OCZ power sup? should i replace it for a better one? if so what should that be?

[TEDWARDS]

Your best option is to try it in a friends PC If it works in his pc then you know it is not your graphics card.......and that it is you PSU.

[Ryan Arnold]

okay thanks guys ! ill give that go

[Ryan Arnold]

on a side note in evga prision x the clock speeds differ from the ones in gpu-z

[Ryan Arnold]

it's totally bricked :C my screen looks like a chess board on desktop have to rma it 

[FluffyNuggets]

it's totally bricked :C my screen looks like a chess board on desktop have to rma it

Sounds like you did something to it that you're not telling us.

[Ryan Arnold]

i haven't touched the card other then make a fan profile but i did overclock my cpu to 4.6 GHz and i have thought about it and it's only started happening since i did that but it was only @ 4.6 ghz for a few hours i took it off because i did not notice any changes in fps or performance on the desk top and my 780 is no longer bricked it was just a 320.14 drivers but it still has the original problem