I wandered around the chassis with a condenser microphone to find interesting spots for constantly evolving sound colours.
Induction coil pickups were also used to record the electromagnetic fields emitted by the computer components.
I recorded them a few years ago for a brilliant short movie by Alessio Fava called “Project Genesis”. Here’s the movie and the (very short) article I wrote about it:
Many thanks to Alessio Fava and Lorenza Negri for permission to use an original frame of the movie as the sound library cover!