Worth mentioning that a very slow fan (at 600-800 rpm) is essentially silent. If it only spins up a little when you game you probably won't hear it from the sounds on the game.
While his machine is no longer current, the dream of the fanless computer lives on very strong. The Macbook Air no longer has a fan and is a tiny little machine with strength to spare and passive cooling.
I do not think it is obsolete, just that his original design was inappropriate for his needs. The power supply + GPU are still more than adequate for any task that is not gaming or video rendering.
A ten year old processor can do most anything you need.
2020-03-06: Hopefully, this machine will do for an other 20 years. Come back and check in 2040. -- https://fabiensanglard.net/the_beautiful_machine/