After looking at where your CPU sets in the hierarchy of things That GPU might be just a tadd to much. I will link you to that chart and you will have to make up your mind if it will bottle neck or not.
Your PSU how ever is not a good PSU. It is on the Tier 4 list of PSU's not to buy. Tier 1 is the best and Tier 5 is the worst I will link it as well. I will also link you to AMD site as well. So I hope this helps and good luck to you.