Are you using the latest CAP profiles for crossfire? And dont get discouraged by statements like that CPU is terrible for gaming. It isnt as good as what Intel has to offer, but to say its terrible for gaming is incorrect. There shouldnt be a game on this planet that you couldnt play at 60+ FPS with your combo of hardware. Unless of course its capped. I believe an update came out for LA Noire that lifts that cap, altho its been awhile since ive seen anything LA Noire related.
You are right, I shouldn't have worded it like so. Like what you said, its not as formidable as the Intel offering, but its a processor nonetheless, and it processes stuff.
And he is right, your setup right now should be able to play everything on the highest it goes.