What are safe temperatures for a Sapphire 5850 Radeon video card?

Under intense use, sometimes mine will break 80 c, but has never gone over 85 to my knowledge. Is that within safe range?|||As long as it isn't operating at over 80 degrees for hours on end at a time, you should be fine. If i were you I would try and improve the cooling and airflow inside the computer by opening up the computers case, checking that there aren't any cables blocking the fans, and maybe apply some new thermal compound to the cpu.