You are barking up the wrong tree. You want to build a system you build a PC, you want a Mac and you buy a Mac from Apple. There are no 3rd party options for Mac, There are no "built it myself" options for the mac. Apple makes their huge profit and keeps it all by preventing anyone from making clones.
I have an interesting question that i know is misplaced on this fourm.
my question pertains to the PowerPC G4/G5 series computers from Apple.
i know that you can purchase almost all the hardware needed to build these machines, but i am wondering where or how do i get things such as the motherboard, ram (if anything special is needed), hard disk (if anything special is needed) etc. etc. etc.
i am just wondering if buying all the raw components and custom building a mac, just like a lot of people do with the Linux or Windows PC's of today.
i built my PC, now i kind of want a new challenge.
any advice on getting this hardware