2x or 4x doesn't matter , you'd need magnitudes of difference to need to think what an OS can or can't do. Which is what the old ten year was about -- and look,

2x or 4x doesn't matter , you'd need magnitudes of difference to need to think what an OS can or can't do. Which is what the old ten year was about -- and look, 2^(10/1.5) is a bit above 101. Two magnitudes. That matters. To compare, let's presume (this is a great exaggeration I know but it serves the purpose) each Chrome tab takes equal CPU time. Say, on the current computer the 100th tab makes it unusuably sluggish. At 2x, the previous computer could open 50, even at 4x we are looking at 25. At 100, we are looking at not being able to run Chrome.