Just for fun I figured what the hey, let's see what this old laptop will mine with Nicehash. It's not a mining rig, not by any stretch. It's just a simple Dell Starlord laptop with an Intel Core i7. I fired it up this morning and (drumroll) I mined .0000009 BTC, worth about 1 penny so far! Boom! Ballin!
I've got two more crappy old laptops sitting in storage..... I wonder how lousy and outdated of a machine you can still mine on..... Hmmmm...... :)