It has been rumored that Apple will be coming up with Macs carrying Intel's Conroe Core 2 Duo. If this turns out to be true, future Mac upgraders may have to choose between the current Conroes (Conroe E6000 series) and the upcoming Conroe E4xxx models, the two being different in FSB speed.

The E6000 series have either 2MB or 4MB of L2, running over a 1066MHz FSB. The upcoming E4300 Conroe will support only an 800MHz clock, with 2MB of L2 and clocking in at 1.8GHz - 0.06 notches below E6300's 1.86GHz. It also has no Virtualisation Technology support.