It's a hypothetical example to illustrate the point that "anything that slows you down or irritates you eats up more minutes than just the raw time you're waiti

It's a hypothetical example to illustrate the point that "anything that slows you down or irritates you eats up more minutes than just the raw time you're waiting". For the sake of a few thousand dollars for a laptop that can be used for several years, even a 1% increase in efficiency is very likely worth it.