Hi, you have to try really hard to damage newer GPUs with software OC.
Open MSI Afterburner, max your power limit, increase your core clock 50+ at a time while testing with UNIGINE Valley or Heaven benchmark at Ultra till artifacts (weird lines and colors) happen or your driver crashes. Then fine tune it by increasing 10 at a time from your previous clock. Do the same for Memory, then save your profile. Don't check apply overclocking at startup.
Example Core clock: +50 > +100 > +150 > crash > +110 > +120 > ....
Keep your temps below 85c, if you go over it or stay near it., consider installing a fan on your case near the GPU.