My card idles at 32*C usually, around your temps ingame
blackouts sound like chronic overheating to me.
Yours has the teeny tiny fan though. Have you tried reseating the HS or directing a bit more air in its direction, I have 2x80mm blowing towards mine and ramsinks on the back with an 80mm pulling heat off the card and NB.
Put the 9.2 drivers on, they got me a good 4 - 5fps increase in Warhead and Far Cry 2, so I consider them stable.

Yours has the teeny tiny fan though. Have you tried reseating the HS or directing a bit more air in its direction, I have 2x80mm blowing towards mine and ramsinks on the back with an 80mm pulling heat off the card and NB.
Put the 9.2 drivers on, they got me a good 4 - 5fps increase in Warhead and Far Cry 2, so I consider them stable.