The GTX 590 is not an OC'ing card... OC it and it's not a question of if, but when it will go up in a puff of smoke.
BTW, that video was about nVidia's bad driver for the 590 and how it caused that to happen.
nVidias 196.75 driver did the same thing and was causing the same issues on a myriad of cards.
Oops, nVidia's reputation of driver "perfection" goes up in a puff of smoke!