1080ti force restarts

Aug 22, 2018
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currently running a rig with a 3770k and the gigabyte gtx 1080ti 11g oc, i had a gtx 980 before and never had any issues with it but now after installing the card today when i play a game it computer failsafes and restarts. I also have a corsair 850w psu and from what i thought was itd be enough to power the card, do i need more power or whats the real issue?