What is the difference between the Athlon 64 and the Athlon x2?

[Drastik]

Is it just brand name difference?

 

[diduknowthat]

Athlon 64 is single core while Athlon X2 is dual core.

 

[Bodaggit23]

Athlon = Single Core

Athlon 64 = Single Core, 64bit capable

Athlon 64 X2 = Dual Core, 64bit capable