Yeah... my 4870x2 went to 115 degree before shutting down the system...
Problem is, once it's been running
that hot, the thermal paste turns into something almost like concrete = totally useless.
And it ruins the fan - if it wasn't broken before...
May I recommend Arctic cooling fans? Very efficient and relatively cheap...
http://www.arctic-cooling.com/catalo...Path=2&mID=379
http://www.arctic-cooling.com/catalo...Path=2&mID=256
My present 5970 is cooled by Arctic and it hasn't seen a temp above 55 degree yet...
http://www.subsim.com/radioroom/showthread.php?t=174638 
Best of luck!
