ThinkPad G series

The ThinkPad G series is a series of desktop replacement ThinkPad 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.

G40 and G41
The G40 and G41 was based on an Intel Pentium 4 and was released as low-end, affordable and massive successors of Pentium 4-M-equipped 15" ThinkPad A31 and 14" ThinkPad T30.

Both models has a 2 screen size options: the 15" and 14.1" screens with same case.

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.