Hello, How are you? I am thinking of picking up a 24 iMac 9.1 early 2009 with the 2.66 e8135 CPU. Since the computer comes with the 640gb HDD, If I get the computer, I am thinking about upgrading it. I have experience with hardware and already saw the tutorials, so I am comfortable I can do it. What I would like to know us if I can find a 3.06 e8435 CPU, can I also swap the CPU? Thanks. Cheers.