Strange I have two and when gaming never pass 80c stay very quite also. Probably from reviews the most quite version of the 290s.
Also got mine on release week and yet to have any real driver issue performance wise. I did notice 14.6 made idle temps bit higher.
It is possible I had a dud unit with crappy thermal paste (something I find MSI has done before) or some crappy driver install after my nvidia card. When I asked support if I could take it apart they offered a refund and I took it and "survived" with my 680 for a couple of months.