The popular iMac line of computers has been in existence in one form or another since 1998. In August 2007, Apple introduced an Intel-based iMac with a glossy, widescreen display and an anodized aluminum frame. In April 2008, Apple updated the iMac with faster Intel Core 2 Duo processors, 800 MHz memory, up to 2 GB memory standard, and a new graphics option. In March 2009 Apple updated the iMac with 1066 MHz DDR 3 memory, up to 4GB memory standard and supporting up to 8GB, and new graphics options. In October 2009 Apple updated the iMac with larger 21.5-inch and 27-inch displays, faster Intel Core 2 Duo and Intel Core i5 and i7 processors, 4GB memory standard and supporting up to 16GB, and new graphics options

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How to identify iMac (Mid 2007) and later models

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