The X2 doesn't really suffer from this as much - a Brisbane is a Brisbane, whether it's running a 2.2 GHz or 3.1 GHz. The only big difference is that it takes a lot more voltage to get to that speed when starting with a $50 4200+. There are other Athlon 64 X2's that have up to 2MB of cache, but then you would have to sort through all the model numbers, revisions, steppings, and that in itself would require its own 8 page article. As far as the AMD vs. Intel $50 Dual Core War is concerned, there is a clear winner: The Celeron E1200. AMD wins one battle though, and it is a major one for many people - it is definitely the superior gaming chip.