AMD has ran pretty well for me whether it be cpu or gpu, I think your just doing it wrong. ANYWAYS to respond to the other point in what you said, wow does in fact use multiple cores generally 2 and then offloading some other minor processes to the third and 4th core, if you ever have task manager open you'll notice 2 being used heavily with wow and 2 being used mildly.
But I will say if you had the option either buy a intel or wait for Bulldozer both of which currently beat down the current amd cpu (bulldozer is more of a guess since it is replacing phenom II) but if you really want don't want to wait go with the 925 it will be a nice increase I went from a athlon II x2 OCed to 3.5ghz to my current 965 OCed to 4ghz and it game me rather nice improvements in everything, the athlon II x2 was a complete bottleneck on my 6870
CPU: Intel I5-3570k 4.7ghz MB: Gigabyte Z77-D3H
GPU: Gigabyte GTX 970 G1 Gaming Ram: G-Skill 8GB 1333
SSD: OCZ Vertex 3 120GB PSU: Corsair CX850M Case: Corsair 750D
For WoW x4 955 would give decent speed boost, for non-WoW games the difference between AthlonII and PhenomII less than 10% in typical games making it very ineffective upgrade and mostly waste of money. Only if you have really low end CPU currently (x2 200/400 series) upgrading it is worth considering, while AthlonII x4 600 series is pretty much identical in in most games to low end PhenomII's.
Never going to log into this garbage forum again as long as calling obvious troll obvious troll is the easiest way to get banned.
Trolling should be.