8350 oc and gtx 780 oc

Logan im in need of your assistance. 

I have a 8350 oc to 5ghz on a 

M5A99FX pro r2.0

8gb patriot memory 1866mhz

750 watt ultra psu 12v 56a

Crucial 240gb ssd

Evga gtx 780 sc acx.

My issue is when im overclocking the video I can barly get any to work, 50-79 core, 97 mem... do I not have enough watts? 

3dmark crashes and blank screen driver for video crashes. Runs fine stock for gpu

did you increase the voltage in EVGA precision x (also known as the power target), if not then do so, set it well above what you think you might need. then just lower the voltages after the card is at full load so you can see what kind of percentage you need.

You have more than enough wattage. Probably only need 500W for that system. 550W if you wanted to stress it.

You might have a bad overclocking card. It's all luck of the draw.

Try increasing the volts to maintain stability.

Try different drivers.

Yes have set to max sliders for power, and tweaked mv as well, will see if memory on card is samsung or not, read about evga using cheaper brand that doesnt oc well at all..