neither 2 pc's nor laptops are a good choice, build yourself a dedicated mining rig and do it the right way. using a laptop is just a horribly dumb idea as youll kill those faster than youll get your money back. and the pcs why would gpus in a case that's got super poor ventilation and torture the gpus like that? come on have some common sense that said instead of wasting everyone time and posting a mostly useless thread, had you of actually spent time looking through this very forum you would have found a plethora of more than enough information to answer your very noob questions