Mac Pro 1,1 want to install Mac OSX Yosemite

[WoodenDiamond71]

Well i have no idea what to do or how to do it, but i want to install a newer version of OSX on my mac pro with the current specs :

Processor 2 x 3 GHz Dual-Core Intel Xeon
Memory 4 GB 667 MHz DDR2 FB-DIMM
Graphics ATI Radeon X1900 XT 512 MB

What must i do in order to install a newer version of OSX on this mac? I honestly just want to be able to have a better performing mac since photo editing on this machine isn't bad but can be better with latest software. Thanks!

 

[DeltaMac]

This thread will answer your questions.
https://forums.macrumors.com/threads/2006-2007-mac-pro-1-1-2-1-and-os-x-yosemite.1740775/
(hint - you get to replace the graphics card with a compatible one. That's your first step)