ThinkPad G series
| ThinkPad G40 | |
| Also known as | ThickPad | 
|---|---|
| Developer | IBM (2003–2005) Lenovo (2005–2006) | 
| Product family | ThinkPad | 
| Release date | 2003 | 
| Discontinued | 2006 | 
| Operating system | Microsoft Windows | 
| CPU | Intel Pentium 4 | 
| Marketing target | Business purpose | 
| Successor | ThinkPad R series | 
| Related | ThinkPad A series | 
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The ThinkPad G series was a line of desktop replacement ThinkPad laptops developed by IBM and Lenovo as partial successors to the ThinkPad A series. Positioned as a budget friendly alternative to the desktop replacement models of the T and R series with suffix 'p', the short-lived series was and still is the only ThinkPad series to use a desktop CPU (except G50). Three generations were released from when it was released in 2003 to when it was succeeded in 2006 by the ThinkPad R series.