I bought a core 2 duo iMac in 2006 and said that I would upgrade if and only when a quad core came out. Then I pre ordered the late 2009 quad core as soon as it was announced that it had 4 cores. When I upgraded I said that I would not upgrade again until I get 8 cores. What is the likelihood that Apple will release an 8 core iMac at the end of this year? 6 core will not cut it, I can out wait Apple for a new iMac. I did the same thing with laptops but with a Laptop I made the decision that I would upgrade at a 6 core upgrade.