[harrierpigeon]

OTOH, you can wind up with stuff like installing an OS that requires more than the device has to offer- like installing the most recent version of Ubuntu Desktop on a Intel Core2 Duo isn't going to go well, nor did installing iOS 7 on iPhone 4's- which I remember eagerly installing without realizing the major slowdown all the new features added that I couldn't undo.

[onli]

Linux usually works perfectly fine with old hardware, a Intel Core2 Duo should be completely enough. That's even 64 bit hardware. Worst case you have to swap out Gnome with something more minimal, but that's unlikely.

[fuzxi]

I'm currently running Manjaro with i3wm on a laptop with a core 2 duo. It came with a couple of simple conky widgets enabled by default and those probably took 5-10 seconds to load. Just boxes, one with static text and the other with load statistics. Resizing windows is a little painful, as is opening them.

I3 runs reasonably well, but Gnome would probably be too heavy to make for an enjoyable experience.