What is the difference between the 2008 iMac and the 2009 iMac?
Early 2008, Intel Core 2 Duo, AliMac 2.4GHz Intel Core 2 Duo 20-inch (Al)iMac 2.66GHz Intel Core 2 Duo 20-inch (Al)iMac 2.8GHz Intel Core 2 Duo 24-inch (Al)Early 2009, Intel Core 2 Duo, AliMac 2.66GHz Intel Core 2 Duo 20-inch (Al)iMac 2.66GHz Intel Core 2 Duo 24-inch (Al)iMac 2.93GHz Intel Core 2 Duo 24-inch (Al)iMac 3.06GHz Intel Core 2 Duo 24-inch (Al)Mid 2009, Education Institutions OnlyiMac 2.0GHz Intel Core 2 Duo 20-inch (Al)* Design: Edge-to-edge glass/seamless enclosure debutLate 2009, Core i5/i7 quad-core processors availableiMac 3.06GHz Intel Core 2 Duo 21.5-inch (Al 16:9)iMac 3.06GHz Intel Core 2 Duo 21.5-inch (Al 16:9)iMac 3.06GHz Intel Core 2 Duo 27-inch (Al 16:9)iMac 2.66GHz Intel Core i5 27-inch (Al 16:9)