I don't think I have this issue but I have an ATI 5770 as well and it has always run pretty hot when I play FF14. Over the summer it started making some pretty ugly whirring sounds and it was just a matter of very thoroughly cleaning out some dust. I put in a bunch of extra fans to try to keep it cool but the card just runs very hot. Idling at 44 C and runs the game at about 70-75 C after a few hours of play, depending on the temperature of the room. Over the summer because my air conditioning sucks, it was getting above 90 C and making the noise that caused me to take it apart and remove a bunch of dust. That helped tremendously, but I think I am going to do some shopping around for a better card when I get my tax return...