Look at the passmark (single core) scores. It gives a little bit of an example of just how much better the i5-4670K will handle Dolphin (expect even more of a difference when you overclock)
http://cpuboss.com/cpus/Intel-Core-i5-4670K-vs-AMD-A10-7850K
http://cpuboss.com/cpus/Intel-Core-i5-4670K-vs-AMD-A10-7850K

