Chris Wilkinson, Ars Technica:

I was browsing a local online classifieds site and stumbled across a gem: a Macintosh IIsi. Even better, the old computer was for sale along with the elusive but much-desired Portrait Display, a must-have for the desktop publishing industry of its time. I bought it the very next day.

It took me several days just to get the machine to boot at all, but I kept thinking back to that article. Could I do any better? With much less? Am I that arrogant? Am I a masochist?

Cupertino retro-curiosity ultimately won out: I decided to enroll the Macintosh IIsi as my main computing system for a while. A 1990 bit of gear would now go through the 2018 paces. Just how far can 20MHz of raw processing power take you in the 21st century?

If you are even mildly curious about this experiment, I urge you to follow the link. It does not disappoint. A geek’s delight, a worthy rabbit hole.