I wouldn't buy a new cpu just for dolphin. If everything else is fine just keep it. Have you seen the link i've posted above?
Just checked your settings, you should try to enable "lock threads to cores" and enable other audio (throttle).
Just checked your settings, you should try to enable "lock threads to cores" and enable other audio (throttle).

![[Image: akuma1a.jpg]](http://img182.imageshack.us/img182/2503/akuma1a.jpg)