Well, I only got a AMD 6000+ with 3,22 GHz, with overclocking 3,33 GHz at best, else it overheat in about half hour or faster.
I also only got a GTX650Ti, overclocked from GPU Clock 941 Mhz to 1130 Mhz and the Memory clock from 5400 Mhz to 7000 Mhz and the Dolphin x64 (you should install that, if you have a 64 bit Windows, because it runs faster on these. In fact it doubles the FPS.) runs with 60FPS in allmost every game.
I have to limit the FPS to sound, because so the stuttering stops, but it works fine. Tested it with Phantasy Star Online Episode 1 & 2, Resident Evil Zero and many others.
But the importanst thing is to turn the framelimit option to Audio, because that will give the biggest FPS boost and stops the stuttering. :3
For the graphics you need to switch sometimes the backend from Direct3D9 to Direct3D11, or else some games wouldn't run.
For the graphiccard option make sure, that it names your Graphiccard.
For the last thing go to the Hacks header and make a hook by the option "OpenMP Texture Decoder", the games should be run now much smoother, I hope I could help with the problem. :3 (\s/)