If you’re looking for specifications and component details for all modern Macs, head over to the Macintosh & Mac Clone System Specs section at EveryMac.com.
You can search models by introduction year, by technical capability & identifier, by Apple Order Number, Model Number, EMC Number, Model ID, Serial Number “Snippet,” and Intel processor number, and others.

The Ultimate Mac Timeline is also extremely useful for visually understanding the introduction dates and lifespan of various models of Macs that have been launched through the years. The timeline can be dragged left or right, and clicking on the thumbnail or brief description of a particular Mac will pop-up summary specs.
