Hi,
I am afraid you will have an unfortunate bottleneck with that cpu, although, it won't be a really big one. On the other side, the power supply should be enough to run it if you aren't thinking of crazy overclocking and don't have many other things like 20 harddisks. Just check if it has the power cords and you should be fine. For the rest you should be fine, but i think a more suitable choice would be the R9 380 from AMD if you don't mind the extra heat. I am not the biggest expert but this might help you on your way