The ThinkPad G series is a series of desktop replacementThinkPad laptops made by IBM. The short-lived series is the only ThinkPad series to use a desktop CPU (except G50), being produced from 2003 to 2006 with three generations released.
Both models has a 2 screen size options: the 15" and 14.1" screens with same case.[2]
G50
The G50 was released in 2006. It retained the overall design of G40 and G41 but was based on the new Intel Core architecture which consumes less power than previous Pentium 4 processors. The G50 is only available in 15" screen option and is only sold in Japan.[5]