i see that core 2 duos are the most common and pretty much standard dual core, but all the computers i see with them are only in the 2. somethin range, i have a pentium D dual core at 3.2 GHz. since the c2d's are newer, is there an advantage to those even tho the lower speed? i know theres faster, but why would they be selling higher end computers with the new processors at 2.x when the older models (mine) had 3.x dual cores