Amazon.com: Apple iMac 27-Inch Desktop, 3.4 GHz Intel Core
Amazon.com: Apple iMac 27-Inch Desktop, 3.4 GHz Intel Core,Apple iMac 27,Amazon.com: Apple iMac ME089LL/A 27in Intel Core i7-4771 X4,Amazon.com: Apple iMac 27-inch Retina 5K Desktop MK472LL/A,Identify your iMac model - Apple Support