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Nvidia Drivers Behaviour

aviwil

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Mar 19, 2012
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#1
I have found the following with GPU-Z on Nvidia GTX 460M .
1. Here are basic lPC specs :
CPU-Z 1.JPG

CPU-Z 2.JPG

GPU 296 1.JPG

2. I find with about Ver. Nvidia 285.62 and later , when I start playing a movie , the GPU load is about 20% as normal . After a few seconds , it will go up to around 70% and stay there , and GPU clock will adjust down to 202.5 and VDDC to 0.8120 V :
GPU 296 Movie 2.JPG

GPU 296 Movie 3.JPG

These adjustments occurr , even if I am not playing any video , just running GPU-Z :
GPU 296 2.JPG

GPU 296 3.JPG

3. With Ver. Nvidia 280.26 , GPU load is about 20 % and stays there , as do GPU clock and VDDC :
GPU-Z 280.26 1.JPG

GPU-Z 280.26 2.JPG

4. Might it be that GPU-Z is not measuring correctly with newer drivers , or that it's presence is somehow causing these parameters to adjust ?