Whats a normal temperature for a video card??

After playing Oblivion for about an hour and 30 min, my video card (ATI Radeon 850 XT) was 117 degrees (f). Is this normal?? Or should i consider buying a after-market cooler for my card.|||I have run my card much hotter than that with no problems, but for the minimal cost of a cooling fan you should put one on it.