There is only one real way to check this, it is to actual use the card and see for yourself the temperatures. You won't need a cooler. If it does get hot which most GPU's tend to do, just have a side intake fan to blow cool air at the GPU.
The card will have a cooler on it, most likely one that is considerably better than the reference cooler. Just make sure your case has decent air flow through it. As Azrael suggests, if the card seems hot, adding a side intake fan to your case (if possible) can make a lot of difference.