??? OSX is a big part, but aside from that. I know they both use the same basic parts (HD, memory, cpu etc). But aside from that too, surely there must be something else going on in there that makes them run so much better. All the IC's, diodes, transistors, etc, surely Apple must be somehow integrated these parts really well together. The drivers, the bus', custom mobo, I'm looking for someone knowledgeable in the very low level of it for an answer. I'm in comp Engineer, sophomore.....we've touched on this stuff, but the big picture isn't really clear to me yet.