I don't think there is enough demand for anybody to make a replacement motherboard for the shell, maybe some person will undertake a solo project to do it for a

I don't think there is enough demand for anybody to make a replacement motherboard for the shell, maybe some person will undertake a solo project to do it for a lot of money. Apparently you can fit an x230 board in there but the x230 does not accept x220 batteries and so you have to flash the EC too. I'm not massively impressed with the performance of the x230 i7 and the heat dissipation will remain a big problem, so I don't consider this swap worth the effort. https://old.reddit.com/r/thinkpad/comments/3fzm0c/x230_motherboard_in_x220_chassis/ https://old.reddit.com/r/thinkpad/comments/3fzm0c/x230_mothe... https://www.thinkwiki.org/wiki/Embedded_Controller_Firmware https://www.thinkwiki.org/wiki/Embedded_Controller_Firmware There are more options if you want to get into soldering CPUs https://forum.thinkpads.com/viewtopic.php?t=121844 https://forum.thinkpads.com/viewtopic.php?t=121844