Macbook and Macbook Pro come with various configurations which you can manipulate by adding/removing hardware. Sometimes you might not be totally sure about the configuration of the macbook while you are buying it, but when comparing with some other mac, you would like to know the configuration of your macbook. Here is how you can find it -

Go to the Apple icon, and open the menu – Click on the “About this Mac” option.

In the window opened, select the option – “More Info” to open the System profiler which will have all the information and configuration that you need about your macbook.

In the System profiler, you would get the Macbook configuration, in the main window under Hardware the following information -

http://www.thewwwblog.com/images/apple/macbook-configuration.png