You can buy anything, my friend.. you just have to know where to look.
Won't be long before a MacPro gets written off in an insurance claim and it's parts sold off on eBay.. or a repair center will order a logic board only to find out that wasn't the problem.
Stuff like that happens all the time.. and as time progresses, will happen with more frequency.
Or let's say in a year or so my MacPro goes out of warranty and the power supply decides to go belly up. As opposed to buying an expensive original part, I just transfer everything to an ATX case, and use a modified ATX power supply.. while i'm at it, I replace the hard drive, and bump up the processors a notch or two.
Would I be breaking the EULA by installing the copy of OSX that shipped originally with my MacPro on the resulting 'Frankentosh'?
I'm not concerned with service/support.. what i'm asking is, since it's my understanding that the Apple EULA prohibits the running of OSX on 'non Apple' hardware, what exactly constitutes 'Apple' hardware, and could, technically, Apple 'forbid' you to run their OS on such a machine?
Over the years i've owned and built many such 'cobbled together' Macs.. usually taking a G4 or G5 system board and stuffing them in ATX cases, flashing PC video cards to work with MacOS, using garden variety PC RAM, Hard Drives, and CD/DVD drives, and modified PC power supplies to run them.
I've bought several copies of MacOS over the years to run on them, never once bothering to read the EULA.. but now with all the x86 'legality' being discussed, and it mentioned the EULA actually prohibits use of the OS on 'non Apple' hardware, I start to wonder.
Sure, I know overclocking a chip in a G3 iMac, or even replacing a G4 tower CPU with a faster chip voids any warranty it may have had, but does that modification and changing of the hardware make the system, as a whole, 'non Apple' and subsequently mean running OSX is prohibited by the EULA?