Power Mac G4
Used by 4 peopleen.wikipedia.org ↗

“I use an old G4 for scanning and a new Mac Whatever-it-is for everything else.”
Terry Colon Interview, Illustrator, cartoonist · via Uses This 
“Right now I'm using a PowerMac G4 circa 2002 -- it's got nearly one whole gigahertz!”
Andrew Plotkin Interview, Hacker, IF Wizard · via Uses This