AMD Application Profiles

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i would just make sure your drivers are up to date. 4.3 is a pretty mild overclock for that though. generally speaking if your gpu usage isnt 100percent that typically means either your processor is holding it back or you could try installing the game on an ssd drive as the hard drive might be holding it back.
those profiles dont work anymore they were added into the catalyst build a long while ago. that's why that application profile pane is there.. as for the 7870s in crossfire what processor did you pare them up with?
 


The 6300 over clocked to 4.3 ghz
 
i would just make sure your drivers are up to date. 4.3 is a pretty mild overclock for that though. generally speaking if your gpu usage isnt 100percent that typically means either your processor is holding it back or you could try installing the game on an ssd drive as the hard drive might be holding it back.
 
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I'm getting an ssd for Christmas!