"The 1/4-inch color CCD sensor has a 640x480 VGA resolution on the external and internal PPC versions, reportedly a 905x678 resolution on the MacBook Pro and 1280x960 on the Intel Core Duo iMacs."
According to Apple's GSX (global service exchange), they all have 640x480 resolution, even the built-in one's.
Not everything on Wikipedia is correct...
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