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I'm having problems with my Lenovo Z580 notebook, using a GF 630M GPU - it seems that in 3D, under a full load, the card never switches to more than 270MHz, while max. according to spec should be 672. Here are screens from Nvidia Inspector and GPU-Z:

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I tried different drivers (shown 295.93 are direct from Lenovo support, but the same is with newest 320.49), changing energy management settings to highest performance etc. - nothing works. One thing I noticed that under OC tab in Nvidia Inspector there are two Performance Levels... and 270MHz is the max for the lower one (P8). However manually changing it to higher value did not help.

What can I do?

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