I have a T420 gathering dust in a drawer. It was my everyday laptop in college for a couple years but then I switched to buying used Thinkpad tablet PCs for tak

I have a T420 gathering dust in a drawer. It was my everyday laptop in college for a couple years but then I switched to buying used Thinkpad tablet PCs for taking notes. I eventually went back to it last year and upgraded a few parts but regretted how hot the thing got with such poor battery life. It was fine running in a docking station but wasn't great on the move which is annoying if I want to use it in bed or on the couch. I remembered how much I disliked the thing so I bought a used X280 and am overjoyed with the purchase.