So I have a GTX 980ti Hybrid from the release date with Hynix Memory and bios 84.00.32.00.94. I have a LG 34" Ultrawide 3440 x 1440 and
from day one after 20 min or so I the screen would go black for a sec and then back on and only once per session and sometimes in a game.
 
I thought maybe it was the display cable so I bought a new one and no dice. Well I just picked up a new gtx 980ti Hybrid with samsung memory
and noticed it had the newest bios 84.00.41.00.F0. So I flashed the older Hybrid to the new Bios and all my black screen issues are gone. Also
the newer card with samsung memory oc higher even with less voltage. Thought maybe this could help someone but either way I don't feel dirty 
about owning this computer anymore.