Emulators still benefit from an overclocked CPU, especially Dolphin. Many games on Dolphin run stable or great at stock settings, but some games need a pretty good OC to remove stuttering frames or audio. There's also a reason why people use BF3 and BF4 to determine stable overclocks. Most games are much more reliant on the GPU by a significantly greater degree, but not all are. It also has very little to do with FPS.
Edited by Transylvania - 11/16/13 at 8:02am