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GT70 VDDC dropping after a short while.

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I have a GT70 0ND with a gtx675mx. According to gpu-z my vddc drops from 1.025V to 1.000V after about 2 minutes of gaming. If turbo is activated, it drops from 1.0370V to 1.0120V. Same thing when happens on default or overclocked. Temps are low enough ( below 65C ). Is this normal? Or is something really wrong with my laptop?



here are a two screenshots before and afterward.

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