I have an x 800xt that I want to overclock! I am using ATItool v.25 beta 14. I have my clocks running 529 core/ 522 mem. my temps are 84c at full load. What the highest temp that I should go. I would like to hit 540 or so with the core and mem. Any ideas would be help full! P.S. this is my first time overclocking a gpu!