This is the custom ordered PowerMac G4 Dual Processor 533Mhz (Digital Audio) that I bought in 2001, together with the brand new Apple 15” LCD display. I hadn't booted it up in
Restored HP Desktop Computer Windows 10 Dual Core Processor 8GB Memory 500GB Hard Drive DVD WiFi with a 17" LCD (Refurbished) - Walmart.com
Answered: Can I use one CPU in a dual processor motherboard?
Is there is a computer that can use 2 or more processors at one time on the same PC? - Quora