70+ is not a normal temp for the card, I experianced this but have since applied this fan fix:
1.Make a new profile in the catalyst control center (go to the profiles manager\enter or select a name\hit save\then hit activate).
2.Enable the overdrive feature buy unlocking it.
3. Enable...
I have noticed that the ATI 4870 gpu gets stuck at 500mhz after it has been overclocked, I dont know how common the problem is but I have found a solution that gets the GPU back up to 750MHz.
Please follow the following guidlines to re-set the clock speed manually:
1.Make a new profile in...
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