Here is the setup i now run and i would consider it smoth (i doubt it will get higher in shatrath unless i get more ram but i dont realy care since my fps is constant 40-50 everywere else even at galv)

Main window with full resolution and all GFX settings maxed (no sound thought since i cant stand the wow ingame sounds)

Core 1 and 2

Second window:

Core 2

Thrid window

Core 3

Fourth window

Core 4

Fifth window

Core 3 and 4

What doesnt makes sense is why im not able to run it on one core while others are with weaker pcu. However i now run my games smoother then my mate pix (fu)