The latest Ati tray Tools does the trick ( under overclocking settings , it shows the gpu and system temp ), i though that only x800xt's would do the trick but mine's a pro ( asus ) and after i installed the CAT 5.2 and Ray Adams Ati tray tools it showed.
BTW
idle - GPU 40º / System 33º
full load - GPU 55º/60º / System 33º
CPU- idle 25º load 45º