Old ThinkPad Niches
While new ThinkPads are generally most desirable for performance reasons, there is still some demand for features that can only be found in older models. Either for nostalgia or productivity, the following are some considerations for those wishing to buy an old ThinkPad.
Last ThinkPad to have...
A 4:3 screen?
A non-chiclet keyboard?
A trackpoint without a touchpad?
Ability to run open source firmware
In recent years, Coreboot has been making great progress at replacing proprietary BIOS and UEFI. Support for a particular system has become a selling point among free software enthusiasts. The last ThinkPad capable of having all its proprietary code replaced is the T60p / X60. Some newer ThinkPads work with Coreboot but are still closed source due to Intel Active Management Technology (AMT).