T520 and X220 still in use here. They both have SSDs and maxed out ram and are used for nothing other than web browsing in a few uploads online. Youtube is becoming a problem given the high bit rate but you can still watch YouTube on both of them easily keeping it at 7:20 P. Both machines will go until well beyond my bones have crumbled into dust, have more clever features and cool ways of getting things done than any modern machine I’ve ever seen, and not for nothing but both of them have fallen down the stairs multiple times been sat on spilt milk even on one of them(that cleanup sucked) and have both been around since bush was in office but are both still trucking!