Picture Name Years Processor Got it 
eMac 2002 - 2005 PowerPC 7540 x 
iMac 1998 - 1999 PowerPC750 (G3) x 
iMac (5 Flavours) 1999 PowerPC750 (G3) 
iMac SL 1999 - 2000 PowerPC750 (G3) 
iMac Summer 2000 2000 - 2001 PowerPC750 (G3) 
iMac Early 2001 2001 PowerPC750 (G3) 
iMac Summer 2001 2001 PowerPC750 (G3) 
iMac 15-inch 2002 - 2004 PowerPC7450 (G4) x iMac 17-inch 2002 - 2004 PowerPC7450 (G4) iMac 20-inch 2003 - 2004 PowerPC7455 (G4) 
iMac 17-inch 2004 - 2007 G5 / Intel Core Duo / Intel Core 2 Duo iMac 20-inch 2004 - 2007 G5 / Intel Core Duo / Intel Core 2 Duo x iMac 24-inch 2006 - 2007 Intel Core 2 Duo 
iMac (Aluminium, 20-inch) 2007 - 2009 Intel Core 2 Duo 
iMac (Aluminium, 24-inch) 2007 - 2009 Intel Core 2 Duo 
iMac (Unibody, 21.5-inch) 2009 - 2012 Intel Core 2 Duo / Intel Core i3 / Intel Core i5 / Intel Core i7 
iMac (Unibody, 27-inch) 2009 - 2012 Intel Core 2 Duo / Intel Core i3 / Intel Core i5 / Intel Core i7 
iMac (Slim, 21.5-inch) 2012 - 2015 Intel Core i5 / Intel Core i7 
iMac (Slim, 27-inch) 2012 - 2015 Intel Core i5 / Intel Core i7