Cant oc shader on my 660?

I am using a MSI Geforce GTX 660 Twin Frozr card. I am using msi afterburner, but I am unable to change the shader. I changed the layout so I can see iit, i just can do anything with it. Does anyone know why?

Thanks
3 answers Last reply
More about cant shader
  1. No shader clock on 600 series.
  2. also, the display it is on only shows +--- I was wondering how i could make it show the actual mhz or whatever the card is running at
  3. That would be on the right where the graphics/displays are displayed.
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