I'm trying GPU overclocking for the first time. Using EVGA Precision X. It allows me to set up a fan profile, which is nice. So I can decide how much the fan will spin at which temps. I'm just wondering about where the danger zone on these cards is, temperature wise. Should I keep it under 80 degrees celcius? Should I start to worry if it reaches 80-85? Have no experience on this from earlier, so input would be appreciated.