I recommend getting the X230 over the X220, if anyone decides to play with these old Thinkpads. I have both machines, and I found heat dissipation has been significantly reduced on the X230 for otherwise the same performance, thanks to Ivy Bridge's die shrink over Sandy Bridge. Most components from both machines are interchangeable with the exception of their bottom covers and motherboards (an EC firmware hack is available for interchanging keyboards and batteries).