Hey, As the title states, I live in australia and was lucky to get given a 2012 Mac Pro 8core. I want to get dual cpu tray for it where would i find such a thing or look for? whats it called?. what do i need to do?. Would this with the single quad core be better then the 3,1 dual quads at 3.00Ghz the 5,1 is a 2.8 quad. thanks.