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Originally Posted by HanSolo78
70 degrees are normal temperatures with these cards on air cooling at load!
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Yes, it´s a normal temperature. My overclocked X800XL also reaches 70°C. Either the card is somehow broken or it´s a strange kind of system problem.
Try what HanSolo said. If that doesn´t help download the Omegadriver (
http://www.omegadrivers.net). With it comes the fantastic "ATI Tray Tools", it has some features that could either solve the problem or at least work around it.
Right-click the ATT icon in the toolbar, go to Hardware/Overclocking Settings. In the lower part you see the GPU temperature. Click "Show 3D Renderer" and check if the card has the same problems when it reaches 70°C. If that´s the case you can do two things. Either underclock the card so that it never reaches 70°C or use the Fan control (click the Fan tab) to raise the Fan speed. The best is to use a combination of underclocking and a high GPU fan speed.
The first thing you should do is to lower the memory speed by 50%, then run the 3D test again. If it works at 70°C you know that the memory most likely is the problem. If it doesn´t work set the default memory speed and lower the core speed by 50%. Then try the test again. Use 80-90% fan speed for every test. Try again and again until you find a setting that works.
BTW, is your PSU powerful enough (400-450w)? Does this problem also appear in other games?