Those numbers seem good to me. Another possibility is an unstable overclock, so if you're OCing, just do that stability test in CCC.
It could very well just be the driver. If you're already using 9.2, I'd try an earlier version. 8.12 is the most stable for me and what I'm currently using. 8.10 worked really well for me too. So you might have to try your luck there.