Was talking with some friends and the topic of LN2 cooling came up....assuming one has unlimited budget(ability to buy large amounts of LN2 and associated feeding and exhaust systems), a team of mechanical and chemical and electrical engineers(to build a self-reliant LN2 feeding and gaseous exhaust system), special law enforcement allowance(I'm sure there are some laws that prevent a private residence from being able to store large amounts of hazardous material like LN2), how feasible would it be to run a daily-usable system using LN2 cooling? How long can a CPU even last at over -150C?
Also, for the sake of conducting a thought experiment, how would one even go about building a daily-usable LN2 cooled system? what materials/piping/pumps/etc. would one need?