Hi, every time I test my GPU I have: https://dl.dropboxusercontent.com/u/26787185/OCCT.png
The test can run even 40 minutes, the Mhz will stay at lowest as possible.
It is OK at first 20 - 60 secs, then Mhz drops as well as FPS from 60 to 16...
Can it be broken hardware? Any help?