Apple iMac (Intel) Memory Upgrade Configurator - choose your Model:

2006 Model 17-inch Core 2 Duo
2006 Model 17-inch Core Duo
2006 Model 17-inch Education Core 2 Duo
2006 Model 17-inch Education Core Duo
2006 Model 20-inch Core 2 Duo
2006 Model 20-inch Core Duo
2006 Model 24-inch
2007 Model Aluminum 20-inch
2007 Model Aluminum 24-inch
2008 Model 20-inch/24-inch
2009 Model 20-inch/24-inch
2009 Model 21.5-inch / 27-inch Core 2 Duo
2009 Model 27-inch i5/i7
2010 Model 21.5-inch i3
2010 Model 27-inch i3/i5/i7
2011 Model 21.5-inch i5/i7
2011 Model 27-inch i5/i7