>Couldn't you achieve the same thing using cheaper PCs?
They say "Parts of our technology are built using OS X’s graphics frameworks, which offer high quality output and excellent performance". So they couldn't achieve the "same thing" in the sense of running their software on racked computers, because it won't run on PCs, and if you're thinking about expense you'd have to consider the cost of making the software run equivalently well on PCs.
I'm really curious about any study/compassion between OS X's graphics frameworks vs other open/closed source solutions available. How 'output quality' is measured?
They say "Parts of our technology are built using OS X’s graphics frameworks, which offer high quality output and excellent performance". So they couldn't achieve the "same thing" in the sense of running their software on racked computers, because it won't run on PCs, and if you're thinking about expense you'd have to consider the cost of making the software run equivalently well on PCs.