Mac Pro 1.1 (mid-2007) - Intel Xeon 1.33GHz 7GB RAM - MacOS X - 500GB HDD | eBay
Mac Pro "Quad Core" 2.66 (Original) Specs (Mac Pro, MA356LL/A, MacPro1,1*, A1186, 2113): EveryMac.com
Identify your Mac Pro model - Apple Support
Mac Pro DDR2 RAM | Mac Pro 2006 Memory | Mac Pro 2007 | MacMemory.com
Mac Pro 1.1 Custom Waterloop | tonymacx86.com
Installation In a Mac Pro 1,1, 2,1, or 3,1 - MACVIDCARDS.COM
Used Apple Mac Pro 1.1 Computer w/mouse and keyboard - Take 2 Pro Audio
Emptying out a Mac Pro 1,1 and using it to build a Hackintosh. Hopefully not too many modifications will be needed but we will see. Looking to go with a Z390 AORUS
Mac Pro ordinateur / computer 1.1 et 3.1 et Synology NAS DS 211J et DS 212J Photo #2014430 - US Audio Mart
Mac Pro 1,1 Will NOT boot from any media | MacRumors Forums