My big gripe with the Crimson Suite is not with the graphics drivers, it's with the control we lost over those drivers. The Video settings are really a mystery. But anyhow ....I installed the Crimson graphics driver only in the AMD version 15.7.1 and I can see performance increases in some of the games I play and movies/videos I watch versus the performance with the Crimson Control Panel options. AMD should consider giving a either/or choice...just like Microsoft did with giving the choice of a 'desktop' mode vs charms...Give me full control of my graphics settings.
EDIT: I did this through device manager/update driver/'have disk' etc.