Which one is faster and better for playing world of warcraft?
Also, how would they perform against each other if I overclock the 530 and unlock the other 2 cores of the 555?
Thanks
The i3 is going to be faster, it is more expensive.
Keep in mind that WOW only uses 2 cores, so unlocking wont help the game much.
However the Phenom is a nice OC also, should go up to 3.8Ghz.
While WoW is set to run on 2 cores by default you can manually set it by affinity masking. Here's the long forum post with many Blue posts about how it's done.