Yes, your right... AMD names their processors to their Intel counterparts.
So your 3000+ isnt actually running at 3 ghz, its just comparable to an intel at 3 ghz.
For example... AMD's top of the line processor, the FX-55 runs at 2.6 ghz... which you might think is slow. However, the FX-55 can trash anything that Intel has out right now.