Re: Mundane, these days, includes home videos
Not sure I agree that you need 8GB to run iMovie.
I run Final Cut Pro X on my Macbook Pro (I know its a far better processor (i7 etc etc) but only has 8GB of RAM) with no major, or to be honest, minor issues. Just put together a six minute video for my daughters birthday which had hundreds of transitions and effects. I sometimes used the laptop display and sometimes a 23" monitor, it worked OK.
Final Cut Pro X does work even better with 16GB of RAM, but its perfectly usable with 8GB.
I never use iMovie anymore so can't comment on its memory usage, but would be a little surprised if the consumer version consumed more memory than the supposedly professional FCP X.