Graphics cards typically run hotter than CPUs, but 80c is still too high. Make sure you have adequate airflow in your case, try to tidy large or unnecessary cables.
ok thgis is getting stupid i was playing a game in windowed + some other stuff and i was watching my graphics card as it heated up and at parts is was almost at 100*c, now is my sensor wrong or is thats just too hot if so should i buy a new case ? becaus i have no ventalation at all + should i get a aftermarket cooler for it and if yes what one.
no ventilation and overclocking, you must be crazy man you gonna burn up all the building go buy a feel hurricane 2 case consisting the 550watt psu simply enough to satisfy you as in price case or performance by the way, graphics card can tolerate up to 120 C degrees so keep it cool for high performance, right
