[HELP] Video card temperatures

Generally GPUs run hotter than CPUs, 80-90 is usually considered to still be in the safe range. Considering it is a passively cooled GPU i wouldnt consider that too bad either. That is almost certainly within its safe range but you may want to consider improving airflow in your case to reduce its idle temperature a bit because that does seem a bit high so i imagine your case is sitting around 40C.
That should be ok, I know it would be for ATI cards. But if you are worried, make sure airflow is good in your case and dust buildup isn't too much. You could also add a fan blowing over it, but really that would probably be overkill.