Benchmarks: Vitals
Remember the graphed number depicts average all-core temperature during the demanding Blender benchmark; the Zotac quickly climbs past 80°C and then throttles CPU frequency for the bulk of the run, hence a low average temp.
The key takeaway here, of course, is that noise levels range from distracting to annoyingly loud. Headphone-wearing gamers may put up with it, but for everyone else, fan noise could well be a deal breaker.